Micro-meteoroid seismic uplift and regolith concentration on kilometric scale asteroids

Seismic shaking is an attractive mechanism to explain the destabilisation of regolith slopes and the regolith migration found on the surfaces of asteroids (Richardson et al. 2004; Miyamoto et al. 2007). Here, we use a continuum mechanics method to simulate the seismic wave propagation in an asteroid. Assuming that asteroids can be described by a cohesive core surrounded by a thin non-cohesive regolith layer, our numerical simulations of vibrations induced by micro-meteoroids suggest that the surface peak ground accelerations induced by micro-meteoroid impacts may have been previously under-estimated. Our lower bound estimate of vertical accelerations induced by seismic waves is about 50 times larger than previous estimates. It suggests that impact events triggering seismic activity are more frequent than previously assumed for asteroids in the kilometric and sub-kilometric size range. The regolith lofting is also estimated by a first order ballistic approximation. Vertical displacements are small, but lofting times are long compared to the duration of the seismic signals. The regolith movement has a non-linear dependence on the distance to the impact source which is induced by the type of seismic wave generating the first movement. The implications of regolith concentration in lows of surface acceleration potential are also discussed. We suggest that the resulting surface thermal inertia variations of small fast rotators may induce an increased sensitivity of these objects to the Yarkovsky effect.Comment: Accepted for publication in Icaru

Hydrogeomorphological analysis and modelling for a comprehensive understanding of flash-flood damage processes: the 9 October 2018 event in northeastern Mallorca

[EN] A flash-flood event hit the northeastern part of Mallorca on 9 October 2018, causing 13 casualties. Mal- lorca is prone to catastrophic flash floods acting on a sce- nario of deep landscape transformation caused by Mediter- ranean tourist resorts. As global change may exacerbate dev- astating flash floods, analyses of catastrophic events are cru- cial to support effective prevention and mitigation measures. Field-based remote-sensing and modelling techniques were used in this study to evaluate rainfall¿runoff processes at the catchment scale linked to hydrological modelling. Continu- ous streamflow monitoring data revealed a peak discharge of 442 m³ s¿¹ with an unprecedented runoff response. This ex- ceptional behaviour triggered the natural disaster as a com- bination of heavy rainfall (249 mm in 10 h), karstic features and land cover disturbances in the Begura de Salma River catchment (23 km²). Topography-based connectivity indices and geomorphic change detection were used as rapid post- catastrophe decision-making tools, playing a key role dur- ing the rescue search. These hydrogeomorphological preci- sion techniques were combined with the Copernicus Emer- gency Management Service and ¿ground-based¿ damage as- sessment, which showed very accurately the damage-driving factors in the village of Sant Llorenç des Cardassar. The main challenges in the future are to readapt hydrological modelling to global change scenarios, implement an early flash-flood warning system and take adaptive and resilient measures on the catchment scale.This research was supported by the Spanish Ministry of Science, Innovation and Universities, the Spanish Agency of Research (AEI) and the European Regional Development Fund (ERDF) through the project CGL2017-88200-R "Functional hydrological and sediment connectivity at Mediterranean catchments: global change scenarios -MEDhyCON2".Estrany, J.; Ruiz-Perez, M.; Mutzner, R.; Fortesa, J.; Nacher Rodriguez, B.; Tomas-Burguera, M.; Garcia-Comendador, J.... (2020). Hydrogeomorphological analysis and modelling for a comprehensive understanding of flash-flood damage processes: the 9 October 2018 event in northeastern Mallorca. Natural Hazards and Earth System Sciences. 20(8):2195-2220. https://doi.org/10.5194/nhess-20-2195-2020S21952220208Adamovic, M., Branger, F., Braud, I., and Kralisch, S.: Development of a data-driven semi-distributed hydrological model for regional scale catchments prone to Mediterranean flash floods, J. Hydrol., 541, 173–189, https://doi.org/10.1016/j.jhydrol.2016.03.032, 2016.Agisoft Lens: Agisoft PhotoScan User Manual. Professional Edition, Version 1.4, available at: https://www.agisoft.com/pdf/photoscan-pro_1_4_en.pdf (last access: 12 September 2019), 2018.Ajuntament de Sant Llorenç des Cardassar: Minutes of the Plenary Session of Sant Llorenç des Cardassar City Council, Sant Llorenç des Cardassar, available at: https://ovac.santllorenc.es/absis/idi/arx/idiarxabsaweb/catala/asp/dlgVisor.asp?codigoVerificacion=176102aec9d248aab3b72deaad1e0beb001 (last access: 15 May 2020), 2018.Alfieri, L., Berenguer, M., Knechtl, V., Liechti, K., Sempere-Torres, D., and Zappa, M.: Flash Flood Forecasting Based on Rainfall Thresholds, in Handbook of Hydrometeorological Ensemble Forecasting, edited by: Duan, Q., Pappenberger, F., Wood, A., Cloke, H. L., and Schaake, J. C., 1–38, Springer, 2015.Álvaro, M., Del Olmo, P., and Anglada, E.: Mapa Geológico de España, 1:50 000, Hoja 700 (MANACOR), Madrid, available at: http://info.igme.es/cartografiadigital/datos/magna50/pdfs/d7_G50/Magna50_700.pdf (last access: 30 July 2020), 1991.Amirebrahimi, S., Rajabifard, A., Mendis, P., and Ngo, T.: A framework for a microscale flood damage assessment and visualization for a building using BIM–GIS integration, Int. J. Digit. Earth, 9, 363–386, https://doi.org/10.1080/17538947.2015.1034201, 2016.Amponsah, W., Marchi, L., Zoccatelli, D., Boni, G., Cavalli, M., Comiti, F., Crema, S., Lucía, A., Marra, F., and Borga, M.: Hydrometeorological Characterization of a Flash Flood Associated with Major Geomorphic Effects: Assessment of Peak Discharge Uncertainties and Analysis of the Runoff Response, J. Hydrometeorol., 17, 3063–3077, https://doi.org/10.1175/JHM-D-16-0081.1, 2016.Amponsah, W., Ayral, P.-A., Boudevillain, B., Bouvier, C., Braud, I., Brunet, P., Delrieu, G., Didon-Lescot, J.-F., Gaume, E., Lebouc, L., Marchi, L., Marra, F., Morin, E., Nord, G., Payrastre, O., Zoccatelli, D., and Borga, M.: Integrated high-resolution dataset of high-intensity European and Mediterranean flash floods, Earth Syst. Sci. Data, 10, 1783–1794, https://doi.org/10.5194/essd-10-1783-2018, 2018.Artinyan, E., Vincendon, B., Kroumova, K., Nedkov, N., Tsarev, P., Balabanova, S., and Koshinchanov, G.: Flood forecasting and alert system for Arda River basin, J. Hydrol., 541, 457–470, https://doi.org/10.1016/j.jhydrol.2016.02.059, 2016.Barbosa, S., Silva, Á., and Narciso, P.: Analysis of the 1 November 2015 heavy rainfall episode in Algarve by using weather radar and rain gauge data, Nat. Hazards, 93, 61–76, https://doi.org/10.1007/s11069-017-3065-2, 2018.Barredo, J. I.: Major flood disasters in Europe: 1950–2005, Nat. Hazards, 42, 125–148, https://doi.org/10.1007/s11069-006-9065-2, 2007.BOE: Boletín Oficial del Estado (BOE No. 283) (23/11/2018). Decreto-ley 2/2018, de 18 de octubre, por el que se establecen ayudas y otras medidas urgentes para reparar las pérdidas y los daños producidos por las lluvias intensas y las inundaciones del día 9 de, Spain, available at: https://www.boe.es/boe/dias/2018/11/23/pdfs/BOE-A-2018-15970.pdf (last access: 15 May 2020), 2018.BOE: Boletín Oficial del Estado (BOE, No. 12) (26/01/2019), Real Decreto Ley 2/2019 de 25 de enero, por el que se adoptan medidas urgentes para paliar los daños causados por temporales y otras situaciones catastróficas, Spain, 2019.Borga, M., Boscolo, P., Zanon, F., and Sangati, M.: Hydrometeorological Analysis of the 29 August 2003 Flash Flood in the Eastern Italian Alps, J. Hydrometeorol., 8, 1049–1067, https://doi.org/10.1175/jhm593.1, 2007.Borga, M., Gaume, E., Creutin, J. D., and Marchi, L.: Surveying flash floods: gauging the ungauged extremes, Hydrol. Process., 22, 3883–3885, https://doi.org/10.1002/hyp.7111, 2008.Borselli, L., Cassi, P., and Torri, D.: Prolegomena to sediment and flow connectivity in the landscape: A GIS and field numerical assessment, CATENA, 75, 268–277, https://doi.org/10.1016/j.catena.2008.07.006, 2008.Braud, I., Ayral, P.-A., Bouvier, C., Branger, F., Delrieu, G., Le Coz, J., Nord, G., Vandervaere, J.-P., Anquetin, S., Adamovic, M., Andrieu, J., Batiot, C., Boudevillain, B., Brunet, P., Carreau, J., Confoland, A., Didon-Lescot, J.-F., Domergue, J.-M., Douvinet, J., Dramais, G., Freydier, R., Gérard, S., Huza, J., Leblois, E., Le Bourgeois, O., Le Boursicaud, R., Marchand, P., Martin, P., Nottale, L., Patris, N., Renard, B., Seidel, J.-L., Taupin, J.-D., Vannier, O., Vincendon, B., and Wijbrans, A.: Multi-scale hydrometeorological observation and modelling for flash flood understanding, Hydrol. Earth Syst. Sci., 18, 3733–3761, https://doi.org/10.5194/hess-18-3733-2014, 2014.Calsamiglia, A., García-Comendador, J., Fortesa, J., López-Tarazón, J. A., Crema, S., Cavalli, M., Calvo-Cases, A., and Estrany, J.: Effects of agricultural drainage systems on sediment connectivity in a small Mediterranean lowland catchment, Geomorphology, 318, 162–171, https://doi.org/10.1016/j.geomorph.2018.06.011, 2018.Calvo-Cases, A., Gago, J., Ruiz-Pérez, M., García-Comendador, J., Fortesa, J., Company, J., Nácher-Rodríguez, B., Vallés-Morán, F. J., and Estrany, J.: Spatial distribution of geomorphic changes after an extreme flash-flood compared with hydrological and sediment connectivity, in European Geosciences Uninon General Assembly 2020, Copernicus Publications, 2020.Cassola, F., Ferrari, F., Mazzino, A., and Miglietta, M. M.: The role of the sea on the flash floods events over Liguria (northwestern Italy), Geophys. Res. Lett., 43, 3534–3542, https://doi.org/10.1002/2016GL068265, 2016.Cavalli, M., Trevisani, S., Comiti, F., and Marchi, L.: Geomorphometric assessment of spatial sediment connectivity in small Alpine catchments, Geomorphology, 188, 31–41, https://doi.org/10.1016/j.geomorph.2012.05.007, 2013.CCS: Estudio Siniestralidades 2018, Inundación extraordinaria Mallorca: Sant Llorenç des Cardassar. Consorcio de Compensación de Seguros. Ministerio de Economía y Empresa. Gobierno de España, available at: https://www.consorseguros.es/web/inicio (last access: 15 May 2020), 2018.Chapon, B., Delrieu, G., Gosset, M., and Boudevillain, B.: Variability of rain drop size distribution and its effect on the Z–R relationship: A case study for intense Mediterranean rainfall, Atmos. Res., 87, 52–65, https://doi.org/10.1016/j.atmosres.2007.07.003, 2008.Collier, C. G.: Flash flood forecasting: What are the limits of predictability?, Q. J. Roy. Meteor. Soc., 133, 3–23, https://doi.org/10.1002/qj.29, 2007.Copernicus Emergency Management Service: [EMSR323] Flood in Balearic Island, Spain, available at: https://emergency.copernicus.eu/mapping/list-of-components/EMSR323 (last access: 15 May 2020), 2018.Copernicus Emergency Management Service: Directorate Space, Security and Migration, European Commission Joint Research Centre, available at: https://emergency.copernicus.eu/ (last access: 14 August 2019), 2019.Corine Land Cover: Copernicus Land Monitoring Service, available at: https://land.copernicus.eu/pan-european/corine-land-cover/clc2018 (last access: 15 May 2020), 2018.Crema, S. and Cavalli, M.: SedInConnect: a stand-alone, free and open source tool for the assessment of sediment connectivity, Comput. Geosci., 111, 39–45, https://doi.org/10.1016/j.cageo.2017.10.009, 2018.Defossez, S. and Leone, F.: Assessing Vulnerability to Flooding: Progress and Limitations, Floods, 241–257, https://doi.org/10.1016/B978-1-78548-268-7.50014-6, 2017.Duo, E., Trembanis, A. C., Dohner, S., Grottoli, E., and Ciavola, P.: Local-scale post-event assessments with GPS and UAV-based quick-response surveys: a pilot case from the Emilia–Romagna (Italy) coast, Nat. Hazards Earth Syst. Sci., 18, 2969–2989, https://doi.org/10.5194/nhess-18-2969-2018, 2018.ESRI: Arc Hydro Tools, available at: https://www.esri.com/en-us/home (last access: 15 May 2020), 2019.Estrany, J. and Grimalt, M.: Catchment controls and human disturbances on the geomorphology of small Mediterranean estuarine systems, Estuar. Coast. Shelf Sci., 150, 1–12, https://doi.org/10.1016/j.ecss.2014.03.021, 2014.Estrany, J., Garcia, C., and Batalla, R. J.: Groundwater control on the suspended sediment load in the Na Borges River, Mallorca, Spain, Geomorphology, 106, 292–303, https://doi.org/10.1016/J.GEOMORPH.2008.11.008, 2009.Estrany, J., Ruiz, M., Calsamiglia, A., Carriquí, M., García-Comendador, J., Nadal, M., Fortesa, J., López-Tarazón, J. A., Medrano, H., and Gago, J.: Sediment connectivity linked to vegetation using UAVs: High-resolution imagery for ecosystem management, Sci. Total Environ., 671, 1192–1205, https://doi.org/10.1016/j.scitotenv.2019.03.399, 2019.Estrany, J., Ruiz-Pérez, M., Mutzner, R., Fortesa, J., Nácher-Rodríguez, B., Tomàs-Burguera, M., García-Comendador, J., Peña, X., Calvo-Cases, A., and Vallés-Morán, F. J.: Discharge data series of Begura de Salma River (Mallorca, Spain): January 2015–October 2018, PANGAEA, https://doi.org/10.1594/PANGAEA.921411 2020a.Estrany, J., Ruiz-Pérez, M., Mutzner, R., Fortesa, J., Nácher-Rodríguez, B., Tomàs-Burguera, M., García-Comendador, J., Peña, X., Calvo-Cases, A., and Vallés-Morán, F. J.: Monthly precipitation and runoff series of Begura de Salma River (Mallorca, Spain): January 2015–October 2018, PANGAEA, https://doi.org/10.1594/PANGAEA.921412, 2020b.Fortesa, J., García-Comendador, J., Calsamiglia, A., López-Tarazón, J. A., Latron, J., Alorda, B., and Estrany, J.: Comparison of stage/discharge rating curves derived from different recording systems: Consequences for streamflow data and water management in a Mediterranean island, Sci. Total Environ., 665, 968–981, https://doi.org/10.1016/j.scitotenv.2019.02.158, 2019.Fulton, R. A., Breidenbach, J. P., Seo, D.-J., Miller, D. A., and O'Bannon, T.: The WSR-88D Rainfall Algorithm, https://doi.org/10.1175/1520-0434(1998)013<0377:TWRA>2.0.CO;2, 1998.García-Hernández, J., Jordan, J., Dubois, J., Boillat, J., and Schleiss, A.: Routing System II: Flow modelling in hydraulic systems, Communication, 32, 1661–1179, 2007.Gaume, E., Bain, V., Bernardara, P., Newinger, O., Barbuc, M., Bateman, A., Blaškovičová, L., Blöschl, G., Borga, M., Dumitrescu, A., Daliakopoulos, I., Garcia, J., Irimescu, A., Kohnova, S., Koutroulis, A., Marchi, L., Matreata, S., Medina, V., Preciso, E., Sempere-Torres, D., Stancalie, G., Szolgay, J., Tsanis, I., Velasco, D., and Viglione, A.: A compilation of data on European flash floods, J. Hydrol., 367, 70–78, https://doi.org/10.1016/J.JHYDROL.2008.12.028, 2009.Gaume, E., Borga, M., Llasat, M. C., Maouche, S., Lang, M., and Diakakis, M.: Mediterranean extreme floods and flash floods, in The Mediterranean Region under Climate Change. A Scientific Update, edited by: French National Alliance for Environmental Research – ALLENVI, 133–144, available at: https://hal.archives-ouvertes.fr/hal-01465740v2/document (last access: 15 May 2020), 2016.Georgakakos, K. P.: On the Design of National, Real-Time Warning Systems with Capability for Site-Specific, Flash-Flood Forecasts, B. Am. Meteorol. Soc., 67, 1233–1239, https://doi.org/10.1175/1520-0477(1986)067<1233:OTDONR>2.0.CO;2, 1986.Germann, U. and Joss, J.: Operational Measurement of Precipitation in Mountainous Terrain, Springer, Berlin, Heidelberg, 52–77, 2004.GOIB: Mapas de peligrosidad y riesgo de inundación en la demarcación hidrográfica de Baleares. Conselleria de Medi Ambient, Agricultura i Pesca-Direcció General de Recursos Hídrics, available at: https://www.caib.es/sites/aigua/es/plan_de_ gestion_ del_riesgo_ de_ inundacion_de_ la_ demarcacion_hidrografica_ de_ las_islas_ baleares/ (last access: 15 May 2020), 2016.GOIB: Boletín Oficial de las Islas Baleares (BOIB No. 130) (18/10/2018), Decreto-ley 2/2018, de 18 de octubre, por el que se establecen ayudas y otras medidas urgentes para reparar las pérdidas y los daños producidos por las lluvias intensas y las inundaciones, available at: http://www.caib.es/eboibfront/pdf/ca/2018/130/101958 (last access: 15 May 2020), 2018.GOIB: El Govern ja ha abonat 30,4 milions d'euros en ajuts i actuacions de preparació de danys produïts per les inundacions del Llevant, English version: The Balearic Government has already paid 30.4 million euros in aid and actions for the damage caused by the floods in the Llevant county, available at: https://www.caib.es/pidip2front/jsp/ca/fitxa-convocatoria/strongel-govern-ja-ha-abonat-304-milions-drsquoeuros-en-ajuts-i-actuacions-de-reparacioacute-de-danys-produiumlts-per-les-inundacions-del-llevantstrongnbsp (last access: 15 May 2020), 2019.Gourley, J. J., Giangrande, S. E., Hong, Y., Flamig, Z. L., Schuur, T., and Vrugt, J. A.: Impacts of Polarimetric Radar Observations on Hydrologic Simulation, J. Hydrometeorol., 11, 781–796, https://doi.org/10.1175/2010JHM1218.1, 2010.Guijarro, J. A.: Contribución a la Bioclimatología de Baleares, Universitat de les Illes Balears, PhD thesis, available at: http://hdl.handle.net/20.500.11765/5369 (last access: 30 July 2020), 1986.Hardy, J., Gourley, J., Kirstetter, P., Hong, Y., Kong, F., and Flamig, Z.: A method for probabilistic flash flood forecasting, J. Hydrol., 541, 480–494 2016.Harrison, D., Driscoll, S., and Kitchen, M.: Improving precipitation estimates from weather radar using quality control and correction techniques, Meteorol. Appl., 7, 135–144, https://doi.org/https://doi.org/10.1017/S1350482700001468, 2000.Instituto Geográfico Nacional: Digital Terrain Model for Spain obtained from lidar flights, available at: http://centrodedescargas.cnig.es/CentroDescargas/locale?request_locale=en (last access: 15 May 2020), 2014.Jordan, F.: Modèle de prévision et de gestion des crues-optimisation des opérations des aménagements hydroélectriques à accumulation pour la réduction des débits de crue, Laboratory of Hydraulic Construction, Ecole Polytechnique Fédérale de Lausanne, Lausanne, 2007.Kalantari, Z., Cavalli, M., Cantone, C., Crema, S., and Destouni, G.: Flood probability quantification for road infrastructure: Data-driven spatial-statistical approach and case study applications, Sci. Total Environ., 581–582, 386–398, https://doi.org/10.1016/J.SCITOTENV.2016.12.147, 2017.Langhammer, J. and Vacková, T.: Detection and Mapping of the Geomorphic Effects of Flooding Using UAV Photogrammetry, Pure Appl. Geophys., 175, 3223–3245, https://doi.org/10.1007/s00024-018-1874-1, 2018.Laudan, J., Rözer, V., Sieg, T., Vogel, K., and Thieken, A. H.: Damage assessment in Braunsbach 2016: data collection and analysis for an improved understanding of damaging processes during flash floods, Nat. Hazards Earth Syst. Sci., 17, 2163–2179, https://doi.org/10.5194/nhess-17-2163-2017, 2017.Li, Z., Xu, X., Zhu, J., Xu, C., and Wang, K.: Effects of lithology and geomorphology on sediment yield in karst mountainous catchments, Geomorphology, 343, 119–128, https://doi.org/10.1016/j.geomorph.2019.07.001, 2019.Llasat, M. C., Llasat-Botija, M., Petrucci, O., Pasqua, A. A., Rosselló, J., Vinet, F., and Boissier, L.: Towards a database on societal impact of Mediterranean floods within the framework of the HYMEX project, Nat. Hazards Earth Syst. Sci., 13, 1337–1350, https://doi.org/10.5194/nhess-13-1337-2013, 2013.Lorenzo-Lacruz, J., Amengual, A., Garcia, C., Morán-Tejeda, E., Homar, V., Maimó-Far, A., Hermoso, A., Ramis, C., and Romero, R.: Hydro-meteorological reconstruction and geomorphological impact assessment of the October 2018 catastrophic flash flood at Sant Llorenç, Mallorca (Spain), Nat. Hazards Earth Syst. Sci., 19, 2597–2617, https://doi.org/10.5194/nhess-19-2597-2019, 2019.Lowe, D.: Distinctive Image Features from Scale-Invariant Keypoints, Vancouver, available at: https://robo.fish/wiki/images/5/58/Image_Features_ From_ Scale_Invariant_ Keypoints_ Lowe_2004.pdf (last access: 11 September 2019), 2004.Marchi, L., Borga, M., Preciso, E., and Gaume, E.: Characterisation of selected extreme flash floods in Europe and implications for flood risk management, J. Hydrol., 394, 118–133, https://doi.org/10.1016/j.jhydrol.2010.07.017, 2010.Marshall, J. S. and Palmer, W. M. K.: The distribution of raindrops with size, J. Meteorol., 5, 165–166, https://doi.org/10.1175/1520-0469(1948)005<0165:TDORWS>2.0.CO;2, 1948.Merheb, M., Moussa, R., Abdallah, C., Colin, F., Perrin, C., and Baghdadi, N.: Hydrological response characteristics of Mediterranean catchments at different time scales: a meta-analysis, Hydrolog. Sci. J., 61, 2520–2539, https://doi.org/10.1080/02626667.2016.1140174, 2016.Miao, Q., Yang, D., Yang, H., and Li, Z.: Establishing a rainfall threshold for flash flood warnings in China's mountainous areas based on a distributed hydrological model, J. Hydrol., 541, 371–386, https://doi.org/10.1016/j.jhydrol.2016.04.054, 2016.Nguyen, P., Thorstensen, A., Sorooshian, S., Hsu, K., AghaKouchak, A., Sanders, B., Koren, V., Cui, Z., and Smith, M.: A high resolution coupled hydrologic–hydraulic model (HiResFlood-UCI) for flash flood modeling, J. Hydrol., 541, 401–420, https://doi.org/10.1016/j.jhydrol.2015.10.047, 2016.Petrus, J. M., Ruiz, M., and Estrany, J.: Interactions between Geomorphology and Urban Evolution since Neolithic Times in a Mediterranean City, in: Urban Geomorphology, Landforms and Processes in Cities, edited by: Thornbush, M. J. and Allen, C. D., 9–35, https://doi.org/10.1016/B978-0-12-811951-8.00002-3, 2018.Piaggesi, D., Sund, K. J., and Castelnovo, W.: Global strategy and practice of e-governance?: examples from around the world, Information Science Reference, available at: https://www.igi-global.com/book/global-strategy-practice-governance/46168 (last access: 30 July 2020), 2011.Plank, S.: Rapid Damage Assessment by Means of Multi-Temporal SAR – A Comprehensive Review and Outlook to Sentinel-1, Remote Sens., 6, 4870–4906, https://doi.org/10.3390/rs6064870, 2014.PNOA: Plan Nacional de Ortofotografía Aérea, Instituto Geográfico Nacional, Ministerio de Fomento, Gobierno de España, available at: https://pnoa.ign.es/productos_lidar (last access: 15 May 2020), 2015.Pol, J.: Informe INUNBAL Llevant Mallorca 2018, ISO 271/2018, available at: http://www.caib.es/pidip2front/jsp/adjunto?codi=2243620&idioma=ca (last access: 30 July 2020), Marratxí, 2019a.Pol, J.: Predicción y Gestión de Emergencias por Inundaciones, in: International Seminar of Planning and Management of Flood Risks in Mediterranean Environments, INAGEA, University of the Balearic Islands, Palma, 2019b.Pons Esteva, A.: Evolució dels usos del sòl a les illes Balears, 1956–2000, Territoris, 4, 129–145, 2003.Schaefli, B., Hingray, B., Niggli, M., and Musy, A.: A conceptual glacio-hydrological model for high mountainous catchments, Hydrol. Earth Syst. Sci., 9, 95–109, https://doi.org/10.5194/hess-9-95-2005, 2005.Segura-Beltrán, F., Sanchis-Ibor, C., Morales-Hernández, M., González-Sanchis, M., Bussi, G., and Ortiz, E.: Using post-flood surveys and geomorphologic mapping to evaluate hydrological and hydraulic models: The flash flood of the Girona River (Spain) in 2007, J. Hydrol., 541, 310–329, https://doi.org/10.1016/J.JHYDROL.2016.04.039, 2016.Seo, B. C., Krajewski, W. F., and Qi, Y.: Utility of Vertically Integrated Liquid Water Content for Radar-Rainfall Estimation: Quality Control and Precipitation Type Classification, Atmos. Res., 236, 104800, https

Tidally-induced thermonuclear Supernovae

We discuss the results of 3D simulations of tidal disruptions of white dwarfs by moderate-mass black holes as they may exist in the cores of globular clusters or dwarf galaxies. Our simulations follow self-consistently the hydrodynamic and nuclear evolution from the initial parabolic orbit over the disruption to the build-up of an accretion disk around the black hole. For strong enough encounters (pericentre distances smaller than about 1/3 of the tidal radius) the tidal compression is reversed by a shock and finally results in a thermonuclear explosion. These explosions are not restricted to progenitor masses close to the Chandrasekhar limit, we find exploding examples throughout the whole white dwarf mass range. There is, however, a restriction on the masses of the involved black holes: black holes more massive than $2\times 10^5$ M$_\odot$ swallow a typical 0.6 M$_\odot$ dwarf before their tidal forces can overwhelm the star's self-gravity. Therefore, this mechanism is characteristic for black holes of moderate masses. The material that remains bound to the black hole settles into an accretion disk and produces an X-ray flare close to the Eddington limit of $L_{\rm Edd} \simeq 10^{41} {\rm erg/s} M_{\rm bh}/1000 M$_\odot$), typically lasting for a few months. The combination of a peculiar thermonuclear supernova together with an X-ray flare thus whistle-blows the existence of such moderate-mass black holes. The next generation of wide field space-based instruments should be able to detect such events.Comment: 8 pages, 2 figures, EuroWD0

Detection of Artificially Generated Seismic Signals using Balloon-borne Infrasound Sensors

We conducted an experiment in Pahrump, Nevada, in June 2017, where artificial seismic signals were created using a seismic hammer, and the possibility of detecting them from their acoustic signature was examined. In this work, we analyze the pressure signals recorded by highly sensitive barometers deployed on the ground and on tethers suspended from balloons. Our signal processing results show that wind noise experienced by a barometer on a free‐flying balloon is lower compared to one on a moored balloon. This has never been experimentally demonstrated in the lower troposphere. While seismoacoustic signals were not recorded on the hot air balloon platform owing to operational challenges, we demonstrate the detection of seismoacoustic signals on our moored balloon platform. Our results have important implications for performing seismology in harsh surface environments such as Venus through atmospheric remote sensing

Intracellular Bacteria Encode Inhibitory SNARE-Like Proteins

Pathogens use diverse molecular machines to penetrate host cells and manipulate intracellular vesicular trafficking. Viruses employ glycoproteins, functionally and structurally similar to the SNARE proteins, to induce eukaryotic membrane fusion. Intracellular pathogens, on the other hand, need to block fusion of their infectious phagosomes with various endocytic compartments to escape from the degradative pathway. The molecular details concerning the mechanisms underlying this process are lacking. Using both an in vitro liposome fusion assay and a cellular assay, we showed that SNARE-like bacterial proteins block membrane fusion in eukaryotic cells by directly inhibiting SNARE-mediated membrane fusion. More specifically, we showed that IncA and IcmG/DotF, two SNARE-like proteins respectively expressed by Chlamydia and Legionella, inhibit the endocytic SNARE machinery. Furthermore, we identified that the SNARE-like motif present in these bacterial proteins encodes the inhibitory function. This finding suggests that SNARE-like motifs are capable of specifically manipulating membrane fusion in a wide variety of biological environments. Ultimately, this motif may have been selected during evolution because it is an efficient structural motif for modifying eukaryotic membrane fusion and thus contribute to pathogen survival

Guidelines on the management of valvular heart disease: The Task Force on the Management of Valvular Heart Disease of the European Society of Cardiology.

80These guidelines focus on valvular heart disease in adults and adolescents, are oriented towards management, and will not deal with endocarditis and congenital valve diseases in adults and adolescents, since recent guidelines have been produced by the ESC on these topics. Although valvular heart disease is less common in industrialized countries than coronary disease, heart failure, or hypertension, guidelines are needed in this field for several reasons: valvular heart disease is common and often requires intervention; substantial advances have been made in the understanding of its pathophysiology; the patient population has changed with a continuous decline of acute rheumatic fever and an increased incidence of degenerative valvular diseases in industrialized countries. The incidence of endocarditis remains stable and other causes of valve disease are rare. Because of the predominance of degenerative valve disease, the two most frequent valve diseases are now calcific aortic stenosis and mitral regurgitation. Aortic regurgitation and mitral stenosis have become less common. Diagnosis is now dominated by echocardiography, which has become the standard to evaluate valve structure and function. Treatment has not only developed through the continuing progress in prosthetic valve technology, but has also been reoriented by the development of conservative surgical approaches and the introduction of percutaneous interventional techniques.openopenVahanian, A; Baumgartner, ; H, ; Bax, ; J, ; Butchart, ; E, ; Dion, ; R, ; Filippatos, ; G, ; Flachskampf, ; F, ; Hall, ; R, ; Iung, ; B, ; Kasprzak, ; J, ; Nataf, ; P, ; Tornos, ; P, ; Torracca, ; L, ; Wenink, ; A, ; Silvia, ; Priori, G.; Blanc, Jean-Jacques; Andrzej, ; Budaj, ; John, ; Camm, ; Veronica, ; Dean, ; Jaap, ; Deckers, ; Kenneth, ; Dickstein, ; John, ; Lekakis, ; Keith, ; Mcgregor, ; Marco, ; Metra, ; João, ; Morais, ; Ady, ; Osterspey, ; Juan, ; Tamargo, ; Luis, José; Zamorano, ; Annalisa, ; Angelini, ; Manuel, ; Antunes, ; Angel, Miguel; Fernandez, Garcia; Christa, ; Gohlke-Baerwolf, ; Gilbert, ; Habib, ; John, ; Mcmurray, ; Catherine, ; Otto, ; Luc, ; Pierard, ; Josè, ; Pomar, L.; Bernard, ; Prendergast, ; Raphael, ; Rosenhek, ; Sousa, Miguel; Uva, ; Juan, ; Tamargo,Vahanian, A; Baumgartner, ; H, ; Bax, ; J, ; Butchart, ; E, ; Dion, ; R, ; Filippatos, ; G, ; Flachskampf, ; F, ; Hall, ; R, ; Iung, ; B, ; Kasprzak, ; J, ; Nataf, ; P, ; Tornos, ; P, ; Torracca, ; L, ; Wenink, ; A, ; Silvia, ; Priori, G.; Blanc, Jean Jacques; Andrzej, ; Budaj, ; John, ; Camm, ; Veronica, ; Dean, ; Jaap, ; Deckers, ; Kenneth, ; Dickstein, ; John, ; Lekakis, ; Keith, ; Mcgregor, ; Marco, ; Metra, Marco; João, ; Morais, ; Ady, ; Osterspey, ; Juan, ; Tamargo, ; Luis, José; Zamorano, ; Annalisa, ; Angelini, ; Manuel, ; Antunes, ; Angel, Miguel; Fernandez, Garcia; Christa, ; Gohlke, Baerwolf; Gilbert, ; Habib, ; John, ; Mcmurray, ; Catherine, ; Otto, ; Luc, ; Pierard, ; Josè, ; Pomar, L.; Bernard, ; Prendergast, ; Raphael, ; Rosenhek, ; Sousa, Miguel; Uva, ; Juan, ; Tamargo

Life Cycle-Dependent Cytoskeletal Modifications in Plasmodium falciparum Infected Erythrocytes

10.1371/journal.pone.0061170PLoS ONE84

Energy Estimation of Cosmic Rays with the Engineering Radio Array of the Pierre Auger Observatory

The Auger Engineering Radio Array (AERA) is part of the Pierre Auger Observatory and is used to detect the radio emission of cosmic-ray air showers. These observations are compared to the data of the surface detector stations of the Observatory, which provide well-calibrated information on the cosmic-ray energies and arrival directions. The response of the radio stations in the 30 to 80 MHz regime has been thoroughly calibrated to enable the reconstruction of the incoming electric field. For the latter, the energy deposit per area is determined from the radio pulses at each observer position and is interpolated using a two-dimensional function that takes into account signal asymmetries due to interference between the geomagnetic and charge-excess emission components. The spatial integral over the signal distribution gives a direct measurement of the energy transferred from the primary cosmic ray into radio emission in the AERA frequency range. We measure 15.8 MeV of radiation energy for a 1 EeV air shower arriving perpendicularly to the geomagnetic field. This radiation energy -- corrected for geometrical effects -- is used as a cosmic-ray energy estimator. Performing an absolute energy calibration against the surface-detector information, we observe that this radio-energy estimator scales quadratically with the cosmic-ray energy as expected for coherent emission. We find an energy resolution of the radio reconstruction of 22% for the data set and 17% for a high-quality subset containing only events with at least five radio stations with signal.Comment: Replaced with published version. Added journal reference and DO

Differentially expressed alternatively spliced genes in Malignant Pleural Mesothelioma identified using massively parallel transcriptome sequencing

<p>Abstract</p> <p>Background</p> <p>Analyses of Expressed Sequence Tags (ESTs) databases suggest that most human genes have multiple alternative splice variants. The alternative splicing of pre-mRNA is tightly regulated during development and in different tissue types. Changes in splicing patterns have been described in disease states. Recently, we used whole-transcriptome shotgun pryrosequencing to characterize 4 malignant pleural mesothelioma (MPM) tumors, 1 lung adenocarcinoma and 1 normal lung. We hypothesized that alternative splicing profiles might be detected in the sequencing data for the expressed genes in these samples.</p> <p>Methods</p> <p>We developed a software pipeline to map the transcriptome read sequences of the 4 MPM samples and 1 normal lung sample onto known exon junction sequences in the comprehensive AceView database of expressed sequences and to count how many reads map to each junction. 13,274,187 transcriptome reads generated by the Roche/454 sequencing platform for 5 samples were compared with 151,486 exon junctions from the AceView database. The exon junction expression index (EJEI) was calculated for each exon junction in each sample to measure the differential expression of alternative splicing events. Top ten exon junctions with the largest EJEI difference between the 4 mesothelioma and the normal lung sample were then examined for differential expression using Quantitative Real Time PCR (qRT-PCR) in the 5 sequenced samples. Two of the differentially expressed exon junctions (ACTG2.aAug05 and CDK4.aAug05) were further examined with qRT-PCR in additional 18 MPM and 18 normal lung specimens.</p> <p>Results</p> <p>We found 70,953 exon junctions covered by at least one sequence read in at least one of the 5 samples. All 10 identified most differentially expressed exon junctions were validated as present by RT-PCR, and 8 were differentially expressed exactly as predicted by the sequence analysis. The differential expression of the AceView exon junctions for the ACTG2 and CDK4 genes were also observed to be statistically significant in an additional 18 MPM and 18 normal lung samples examined using qRT-PCR. The differential expression of these two junctions was shown to successfully classify these mesothelioma and normal lung specimens with high sensitivity (89% and 78%, respectively).</p> <p>Conclusion</p> <p>Whole-transcriptome shotgun sequencing, combined with a downstream bioinformatics pipeline, provides powerful tools for the identification of differentially expressed exon junctions resulting from alternative splice variants. The alternatively spliced genes discovered in the study could serve as useful diagnostic markers as well as potential therapeutic targets for MPM.</p

Measurement of the cosmic ray spectrum above 4×10184{\times}10^{18} eV using inclined events detected with the Pierre Auger Observatory

A measurement of the cosmic-ray spectrum for energies exceeding $4{\times}10^{18}$ eV is presented, which is based on the analysis of showers with zenith angles greater than $60^{\circ}$ detected with the Pierre Auger Observatory between 1 January 2004 and 31 December 2013. The measured spectrum confirms a flux suppression at the highest energies. Above $5.3{\times}10^{18}$ eV, the "ankle", the flux can be described by a power law $E^{-\gamma}$ with index $\gamma=2.70 \pm 0.02 \,\text{(stat)} \pm 0.1\,\text{(sys)}$ followed by a smooth suppression region. For the energy ($E_\text{s}$) at which the spectral flux has fallen to one-half of its extrapolated value in the absence of suppression, we find $E_\text{s}=(5.12\pm0.25\,\text{(stat)}^{+1.0}_{-1.2}\,\text{(sys)}){\times}10^{19}$ eV.Comment: Replaced with published version. Added journal reference and DO