35 research outputs found
Deep learning methods applied to digital elevation models: state of the art
Deep Learning (DL) has a wide variety of applications in various
thematic domains, including spatial information. Although with
limitations, it is also starting to be considered in operations
related to Digital Elevation Models (DEMs). This study aims to
review the methods of DL applied in the field of altimetric spatial
information in general, and DEMs in particular. Void Filling (VF),
Super-Resolution (SR), landform classification and hydrography
extraction are just some of the operations where traditional methods
are being replaced by DL methods. Our review concludes
that although these methods have great potential, there are
aspects that need to be improved. More appropriate terrain information
or algorithm parameterisation are some of the challenges
that this methodology still needs to face.Functional Quality of Digital Elevation Models in Engineering’ of the State Agency Research of SpainPID2019-106195RB- I00/AEI/10.13039/50110001103
Faculty Publications and Creative Works 2004
Faculty Publications & Creative Works is an annual compendium of scholarly and creative activities of University of New Mexico faculty during the noted calendar year. Published by the Office of the Vice President for Research and Economic Development, it serves to illustrate the robust and active intellectual pursuits conducted by the faculty in support of teaching and research at UNM
New Integrated Data Analyses Software Components
Data management in scientific drilling programs such as the Integrated Ocean Drilling Program (IODP), the International Continental Scientific Drilling Program (ICDP), and the Antarctic Drilling Program (ANDRILL) performs two functions: firstly, the capture of drilling and scientific data during an expedition, and secondly, the long-term storage and dissemination of these data. Here we describe the progress in linking data management with stand-alone data capture and visualization applications. This provides a two-way flow of data between the database and the applications, and a more integrated data environment for scientists. The new system has been tested, so far, with cores from the IODP Expedition 313 New Jersey Shallow Shelf and the ICDP Lake El’gygytgyn Drilling Project
Workshop on the Development of the CoreWall Suite of Applications
The CoreWall project was funded recently (March 2006)by the U.S. National Science Foundation (NSF, ). It is charged to develop a basic suite of data integration and visualization applications for broad use in the ocean-, lake-, continental-, and ice-coring communities. A CoreWall workshop was held on 8–10 May 2006 in Washington, D.C. to explore possible development pathways for the CoreWall Suite of applications. The original CoreWall application was envisioned by thelake-core community who needed a better way to visualize their cores, do visual core descriptions, and share core photos and data in an integrated environment. A collaboration of earth and computer scientists from four universities and one consulting fi rm was established to accomplish these goals
IODP Expedition 322 Drills Two Sites to Document Inputs to The Nankai Trough Subduction Zone
Ocean Drilling Program were to sample and log the incoming sedimentary strata and uppermost igneous basement of the Shikoku Basin, seaward of the Nankai Trough (southwestern Japan). Characterization of these subduction inputs is one piece of the overall science plan for the Nankai Trough Seismogenic Zone Experiment. Before we can assess how various material properties evolve down the dip of the plate interface, and potentially change the fault’s behavior from stable sliding to seismogenic slip, we must determine the initial pre-subduction conditions. Two sites were drilled seaward of the trench to demonstrate how facies characterand sedimentation rates responded to bathymetric architecture. Site C0011 is located on the northwest flank of a prominent basement high (Kashinosaki Knoll), and Site C0012 is located near the crest of the seamount. Even though significant gaps remain in the coring record, and attempts to recover wireline logs at Site C0012 failed, correlations can be made between stratigraphic units at the two sites.Sedimentation rates slowed down throughout the condensed section above the basement high, but the seafloor relief was never high enough during the basin’s evolution to prevent the accumulation of sandy turbidites near the crest of the seamount. We discovered a new stratigraphic unit, the middle Shikoku Basin facies, which is typified by late Miocene volcaniclastic turbidites. The sediment-basalt contact was recovered intact at Site C0012, giving a minimumbasement age of 18.9 Ma. Samples of interstitial water show a familiar freshening trend with depth at Site C0011, but chlorinity values at Site C0012 increase above the values for seawater toward the basement contact. The geochemical trends at Site C0012 are probably a response to hydration reactions in the volcaniclastic sediment and diffusional exchange with seawater-like fluid in the upper igneous basement. These data are important because they finallyestablish an authentic geochemical reference site for Nankai Trough, unaffected by dehydration reactions, and they provide evidence for active fluid flow within the upper igneous crust. Having two sets of geochemical profiles also shows a lack of hydrogeological connectivity between the flank and the crest of the Kashinosaki Knoll
Mission Moho Workshop: Drilling Through the Oceanic Crust to the Mantle
The Mission Moho workshop was held in Portland Oregon on 7–9 September 2006. It was funded by the IODP, the Joint Oceanographic Institutions (JOI), the Ridge 2000 program, and the InterRidge initiative. This report builds on many fruitful and passionate discussions during the workshop, and we express our deepest thanks to all workshop participants. Several of them contributed to the writing of the full workshop report
Remote Sensing of Earth Resources: A literature survey with indexes (1970 - 1973 supplement). Section 1: Abstracts
Abstracts of reports, articles, and other documents introduced into the NASA scientific and technical information system between March 1970 and December 1973 are presented in the following areas: agriculture and forestry, environmental changes and cultural resources, geodesy and cartography, geology and mineral resources, oceanography and marine resources, hydrology and water management, data processing and distribution systems, instrumentation and sensors, and economic analysis
Geomicrobiological investigation of sub-surface mud volcano sediments from the Gulf of Cadiz
Submarine mud volcanoes (MVs) are a type of cold seep environment where sediment, hydrocarbons and other reduced compounds are channelled upwards to the seafloor from significant depth. These sites can be ecological hotspots because of the potential microbial substrates present in the MV ejecta, and are a potential habitat for deep-sourced prokaryotes (Bacteria and Archaea). The microbial communities in sub-surface sediments from four separate MVs in the Gulf of Cadiz (Capt. Arutyunov, Bonjardim, Meknes and Porto) were investigated using a multidisciplinary approach. This involved cultivation and culture-independent molecular genetic-based methods, supplemented by basic pore water geochemistry, activity measurements and direct cell counts. Cultivation-independent 16S rRNA and functional (mcrA and dsrA) gene analyses revealed that the prokaryotes present in the MV sediments were often most closely related to uncultivated organisms. Phylogenetic groups representing major components of the sediment community in these sites included ANME-2a, ANME-la, Miscellaneous Crenarchaeota Group, Deltaproteobacteria and the JS1 candidate division, though community composition varied significantly between MV samples and with depth. Variation in community composition with depth through MV craters paralleled changes in pore water geochemistry indicating this is an important parameter influencing prokaryotic distribution in MV sediments. While containing certain phylogenetic groups 'characteristic' of the deep biosphere, the MV sediments also contained groups commonly associated with near-surface seep environments, suggesting the mud breccia had become colonised by organisms adapted to the present in situ conditions over time. Cultivation analysis showed novel organisms and important functional groups (methanogens and sulphate-reducers) could be cultivated from MV sediment. Pure cultures obtained from Capt. Arutyunov included a putative new species of Arcobacter named "Candidates Arcobacter subtericola" and species belonging to the genera Pseudomonas, Marinobacter, and Halomonas. Enrichments from Meknes contained Bacteria from the groups Bacteroidetes, Fusobacteria, Firmicutes, Spirochaetes, Desulfobulbaceae and Desulfovibrio, and Archaea belonging to the genera Methanogenium and Methanococcoides.EThOS - Electronic Theses Online ServiceGBUnited Kingdo