A multifrequency and multisensor approach for the study and the restoration of monuments: the case of the Cathedral of Matera

Abstract. In this paper we propose an integrated approach to diagnostic prospecting applied to the cathedral of Matera, in Southern Italy. In particular, we have performed both an ultrasonic tomography and a high frequency GPR prospecting on some pillars of the Church to investigate about possible structural yielding and a GPR prospecting at lower frequencies on the floor, where also a linear inversion algorithm has been applied to the data

A Waveform Dataset in Continuous Mode of the Montefeltro Seismic Network (MF) in Central-Northern Italy from 2018 to 2020

The Montefeltro seismic network (FDSN Network code: 1S) was deployed in the Apennines area of northern Marche and southern Emilia-Romagna regions (central Italy). A temporary network was set up in December 2018 and continues to operate, with an array consisting of stations equipped with dynamic digitizers and three-component short/extended/broad band seismometers (Guralp CMG/20s and 30s, Lennartz 3D/5s, Sara SS20 3D/0.5s sensors). The network records in continuous mode at 100 sps. The data are used to analyze the seismic activity and the spatiotemporal evolution of small seismic sequences occurring in the considered area and surrounding zones, strongly clustered in time and space. The data of dataset files are mini-seed formatted and subdivided by the following tree: (1) the dataset is divided by years; (2) the dataset is then subdivided by stations; (3) finally, the data are divided by days of each year in every station folder

Dirac Equation-Based Formulation for the Quantum Conductivity in 2D-Nanomaterials

bstract: Starting from the four component-Dirac equation for free, ballistic electrons with finite mass, driven by a constant d.c. field, we derive a basic model of scalar quantum conductivity, capable of yielding simple analytic forms, also in the presence of magnetic and polarization effects. The classical Drude conductivity is recovered as a limit case. A quantum-mechanical evaluation is provided for parabolic and linear dispersion, as in graphene, recovering currently used expressions as particular cases. Numerical values are compared with the ones from the literature in the case of graphene under d.c. applied field

Recent seismicity of the «Acque Albule» travertine basin

The seismic period which occurred in a portion of Guidonia Montecelio and Tivoli territory, two towns situated about twenty kilometres NE of Rome, affected four areas with a high density of population: Guidonia, Collefiorito, Villalba and Bagni di Tivoli. Even though the events had a very low magnitude (less than 3.0), local phenomena, like rumbles and strong vibrations of the ground, frightened inhabitants also because some months before (January 26, 2001) in a village named Marcellina situated a few kilometres away from Guidonia, a large sinkhole (600 m) had appeared without fore signals. The «Istituto Nazionale di Geofisica e Vulcanologia» (INGV) installed some digital stations that monitored the seismic phenomena. This paper has the aim to process all the information acquired during the period, both from the micro and macro seismic point of view, in order to explain the phenomenology that involved the area. The synergy of the two methodologies lead us to the conclusion that two different seismotectonic structures originated the events, one in an anti-apenninic direction, the other in a N-S direction

The seismic sequence of 30 May - 9 June 2016 in the geothermal site of Torre Alfina (central Italy) and related variations in soil gas emissions

In the framework of a medium-enthalpy geothermal exploitation project, seismicity and soil gas emissions have been monitored in the area of Castel Giorgio-Torre Alfina since 2014. A dedicated local seismic network deepened the knowledge of the natural local seismicity in terms of source mechanisms, high-quality event localization and magnitude estimation. From November 2014 to May 2016, 846 seismic events were recorded, with a magnitude range of Md 0.1-2.8 and hypocentres 4-8 km depth. On 30th May 2016 a Mw 4.3 earthquake occurred near Castel Giorgio, followed by almost 1700 aftershocks; the moment tensor solution depicts a WNW-ESE oriented normal fault. An overview of the epicentral distributions since 2014, highlights that the active tectonic structures are NE-SW and WNW-ESE orientated. The diffuse soil CO2 flux is monitored since 2013 in six target areas located around the future production and reinjection wells, in order to assess the level of background natural degassing. In all target areas the maximum value of soil CO2 flux has been recorded during the 2016 seismic sequence. However, the values of δ13C of the emitted CO2 indicated a shallow biological origin of the gas. At Torre Alfina, the Solfanare natural gas emission, with a CO2 dominated gas, has same composition of the gas hosted in the geothermal reservoir. Here, high values of diffuse soil CO2 flux were recorded. During the 2016 seismic sequence, the Solfanare gas was continuously analysed by an automatic gas- chromatographic station. Results show that apart from small perturbations, no significant compositional variations were recorded. The significant contribution of CLVD and isotropic components suggest a possible opening of fluid cracks below the geothermal reservoir hosted in fractured Mesozoic limestones. The seismo-tectonic scenario indicates that the Solfanare fault was not activated. Kinematics and orientation of the activated faults suggest a relationship with the Bolsena caldera collapsePublishedNapoli, Italy1IT. Reti di monitoraggi

Bollettino Sismico Italiano: Analisys of Early Aftershocks of the 2016 MW 6.0 Amatrice, MW 5.9 Visso and MW 6.5 Norcia earthquakes in Central Italy

The Amatrice-Visso-Norcia seismic sequence is the most important of the last 30 years in Italy. The seismic sequence started on 24 August, 2016 and still is ongoing in central Apennines. At the end of February 2017 more than 57,000 events were located, 80,000 events up to the end of September 2017 (Fig. 1). The mainshocks of the sequence occurred on 24 August 2016 (Mw 6.0 and Mw 5.4), 26 October 2016 (Mw 5.4 and Mw 5.9), 30 October 2016 (Mw 6.5), 18 January 2017 (four earthquakes Mw≥ 5.0). In this seismic sequence, all the waveforms recorded by temporary stations deployed by the SISMIKO emergency group (stations T12**; Moretti et al., 2016) where available in real- time at the surveillance room of INGV. Because of the high level of seismicity and the dense seismic network installed in the region, more than 150 events per day were located at the end of February 2017; still 60 events per day were located up to the end of August 2017.The Amatrice-Visso-Norcia is the most important seismic sequence since 2015, the time when the analysis procedures of the BSI group (Bollettino Sismico Italiano) were revised (Nardi et al., 2015). BSI is now available every four months on the web: bulletins contain revised earthquakes (location and magnitude) with ML≥ 1.5, quasi-real time revision of ML≥ 3.5 earthquakes and phase arrivals from waveforms recorded on seismic stations available from the European Integrated Data Archive (EIDA), (Mazza et al., 2012). These last procedures allow the integration of signals from temporary seismic stations (Moretti et al., 2014) installed by the emergency group SISMIKO (Moretti and Sismiko working group, 2016), even when they are not in real time transmission, if they are rapidly archived in EIDA, together with real time signals from the seismic stations of the permanent INGV network. The analysis strategy of the BSI group for the Amatrice -Visso - Norcia seismic sequence (AVN.s.s in the following) was to select the earthquakes located in the box with min/max latitude: 42.2/43.2 - and min/max longitude: 12.4/14.1 to prepare a special volume of BSI on the seismic sequence.PublishedTrieste, Italy1SR. TERREMOTI - Servizi e ricerca per la Societ

COVID-19 infection in adult patients with hematological malignancies:a European Hematology Association Survey (EPICOVIDEHA)

Background: Patients with hematological malignancies (HM) are at high risk of mortality from SARS-CoV-2 disease 2019 (COVID-19). A better understanding of risk factors for adverse outcomes may improve clinical management in these patients. We therefore studied baseline characteristics of HM patients developing COVID-19 and analyzed predictors of mortality. Methods: The survey was supported by the Scientific Working Group Infection in Hematology of the European Hematology Association (EHA). Eligible for the analysis were adult patients with HM and laboratory-confirmed COVID-19 observed between March and December 2020. Results: The study sample includes 3801 cases, represented by lymphoproliferative (mainly non-Hodgkin lymphoma n = 1084, myeloma n = 684 and chronic lymphoid leukemia n = 474) and myeloproliferative malignancies (mainly acute myeloid leukemia n = 497 and myelodysplastic syndromes n = 279). Severe/critical COVID-19 was observed in 63.8% of patients (n = 2425). Overall, 2778 (73.1%) of the patients were hospitalized, 689 (18.1%) of whom were admitted to intensive care units (ICUs). Overall, 1185 patients (31.2%) died. The primary cause of death was COVID-19 in 688 patients (58.1%), HM in 173 patients (14.6%), and a combination of both COVID-19 and progressing HM in 155 patients (13.1%). Highest mortality was observed in acute myeloid leukemia (199/497, 40%) and myelodysplastic syndromes (118/279, 42.3%). The mortality rate significantly decreased between the first COVID-19 wave (March–May 2020) and the second wave (October–December 2020) (581/1427, 40.7% vs. 439/1773, 24.8%, p value < 0.0001). In the multivariable analysis, age, active malignancy, chronic cardiac disease, liver disease, renal impairment, smoking history, and ICU stay correlated with mortality. Acute myeloid leukemia was a higher mortality risk than lymphoproliferative diseases. Conclusions: This survey confirms that COVID-19 patients with HM are at high risk of lethal complications. However, improved COVID-19 prevention has reduced mortality despite an increase in the number of reported cases

Rapporto Sulle Attività Svolte Dal Gruppo Bollettino Sismico Italiano A Seguito Della Sequenza Sismica Del Centro Italia 2016-2017 Nel Periodo Tra Il 23-9-2016 Ed Il 16-01-2017

La sequenza sismica del centro Italia, successivamente al terremoto di Amatrice di fine agosto, è stata caratterizzata da altri forti terremoti alla fine del mese di ottobre 2016. Il 26 ottobre due eventi di Mw 5.4 e 5.9 hanno interessato l’area posta al confine Marche-Umbria tra i Comuni di Castelsantangelo sul Nera (MC), Norcia (PG) e Arquata del Tronto (AP). La mattina del 30 ottobre un terremoto di Mw 6.5 con epicentro non lontano da Norcia ha interessato l’intera area già profondamente colpita dalla sequenza; questo è stato il più forte terremoto registrato negli ultimi 30 in Italia. A 5 mesi dall’inizio dell’emergenza sismica, il Bollettino Sismico Italiano ha portato a termine la revisione di tutti gli eventi con ML≥ 3.5: parte di questi (insieme alla revisione delle ore che hanno seguito il primo mainshock) sono stati oggetto del primo report (3 ottobre 2016) e del lavoro Marchetti et al. (2016), un’altra parte degli eventi “forti” è stata pubblicata il 17 novembre in ISIDe e nella pagina CNT.ingv.it (insieme anche alla revisione delle prime ore del 30 ottobre, fino alle 7:30 UTC) con relativo comunicato fatto dal funzionario INGV. I restanti eventi già rivisti dagli analisti del BSI sono elencati in questo report e saranno pubbicati a fine gennaio. Gli eventi rivisti integrano all’interno del BSI tutte le stazioni i cui dati sono archiviati nello European Integrated Data Archive, cioè oltre alle stazioni delle varie reti permanenti che costituiscono la Rete Sismica Nazionale Italiana vengono integrate le stazioni delle reti permanenti presenti nelle Marche e le stazioni temporanee installate dal gruppo di emergenza SISMIKO, le cui registrazioni vengono archiviate in EIDA, in tempi brevi, insieme alle stazioni trasmesse in real-time. Durante la sequenza molti degli analisti del BSI sono stati impegnati a coprire la turnazione prevista per lo svolgimento del servizio di sorveglianza nella sala sismica dell’Istituto Nazionale di Geofisica e Vulcanologia (INGV) di Roma e in DICOMAC; questa esigenza non ha consentito di procedere rapidamente nella revisione dell’intera sequenza ma grazie al supporto di personale INGV generalmente non impiegato nel BSI si sta organizzando la revisione della stessa che sarà realizzata nel corso del 2017. A partire dal 23 settembre 2016 (facendo quindi riferimento all’ultimo report del BSI) fini al 16 gennaio 2017 sono stati analizzati e ricontrollati 221 eventi in generale di magnitudo ML≥ 3.5 (con qualche eccezione...INGV DPCPublished1SR. TERREMOTI - Servizi e ricerca per la Societ

Rapporto Sulle Attività Svolte Dal Gruppo Bollettino Sismico Italiano A Seguito Della Sequenza Sismica Del Centro Italia 20162017 Relativo Agli Eventi Nel Periodo Tra Il 17/01/2017 E Il 26/02/2017

La sequenza sismica del centro Italia ha avuto una importante ripresa il 18 gennaio 2017 quando quattro eventi di Mw≥5.0 hanno interessato l’area posta al confine tra Lazio e Abruzzo vicino ai Comuni di Barete, Capitignano e Montereale (AQ). A 8 mesi dall’inizio dell’emergenza sismica, il Bollettino Sismico Italiano ha portato a termine la revisione di tutti gli eventi con ML≥ 3.5: parte di questi (insieme alla revisione delle ore che hanno seguito il primo mainshock) sono stati oggetto del primo report (3 ottobre 2016) e del lavoro Marchetti et al. (2016), un’altra parte degli eventi “forti” già rivisti dagli analisti del BSI sono stati oggetto del report del 31 gennaio. Gli eventi rivisti ad oggi integrano all’interno del BSI tutte le stazioni i cui dati sono archiviati nello European Integrated Data Archive (EIDA), cioè oltre alle stazioni delle varie reti permanenti che costituiscono la Rete Sismica Nazionale Italiana vengono integrate le stazioni delle reti permanenti presenti nelle Marche e le stazioni temporanee installate dal gruppo di emergenza SISMIKO, le cui registrazioni vengono archiviate in EIDA, in tempi brevi, insieme alle stazioni trasmesse in real-time. A partire dal 31 gennaio 2017 (facendo quindi riferimento all’ultimo report del BSI) sono stati revisionati tutti gli eventi forti avvenuti dal 17 gennaio al 26 febbraio 2017; sono stati analizzati e rilocalizzati 37 eventi in generale di magnitudo ML≥ 3.5. Inoltre, sono state modificate alcune delle procedure che selezionano la magnitudo mostrata nella lista dei terremoti pubblicata nel sito web del CNT (cnt.rm.ingv.it) e utilizzata nei conteggi relativi alle diverse classi di magnitudo nelle relazioni di sequenza che vengono inviate giornalmente. Questa revisione, che fa si che la magnitudo mostrata sia sempre quella rivista dal BSI, comporta una lieve variazione nel numero di eventi attribuiti alle diverse classi.INGV- DPCPublished1SR. TERREMOTI - Servizi e ricerca per la Societ