Institution
Institute for Geosciences and Natural Resources
Government•Hanover, Germany•
About: Institute for Geosciences and Natural Resources is a government organization based out in Hanover, Germany. It is known for research contribution in the topics: Groundwater & Aquifer. The organization has 1375 authors who have published 2855 publications receiving 94669 citations.
Topics: Groundwater, Aquifer, Continental margin, Cretaceous, Rift
Papers published on a yearly basis
Papers
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TL;DR: In this paper, the carbon and hydrogen stable isotope composition of the methane as a function of the coexisting carbon dioxide and formation water precursors is used to distinguish two primary methanogenic pathways.
1,756 citations
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British Antarctic Survey1, University of Bristol2, Columbia University3, National Institute of Geophysics and Volcanology4, University of Aberdeen5, University of Texas at Austin6, Centro de Estudios Científicos7, Université libre de Bruxelles8, University of Washington9, Swansea University10, Institute for Geosciences and Natural Resources11, Technical University of Denmark12, National Institute of Polar Research13, California Institute of Technology14, University of Kansas15, Stockholm University16, St. Olaf College17, Norwegian Polar Institute18, Wallops Flight Facility19, University of Canterbury20, University of Oslo21, University of California, Santa Barbara22, University of California, Irvine23, University of York24, Australian Antarctic Division25, Newcastle University26, Goddard Space Flight Center27, Polar Research Institute of China28
TL;DR: Bedmap2 as discussed by the authors is a suite of gridded products describing surface elevation, ice-thickness and the seafloor and subglacial bed elevation of the Antarctic south of 60° S. In particular, the Bedmap2 ice thickness grid is made from 25 million measurements, over two orders of magnitude more than were used in Bedmap1.
Abstract: We present Bedmap2, a new suite of gridded products describing surface elevation, ice-thickness and the seafloor and subglacial bed elevation of the Antarctic south of 60° S. We derived these products using data from a variety of sources, including many substantial surveys completed since the original Bedmap compilation (Bedmap1) in 2001. In particular, the Bedmap2 ice thickness grid is made from 25 million measurements, over two orders of magnitude more than were used in Bedmap1. In most parts of Antarctica the subglacial landscape is visible in much greater detail than was previously available and the improved data-coverage has in many areas revealed the full scale of mountain ranges, valleys, basins and troughs, only fragments of which were previously indicated in local surveys. The derived statistics for Bedmap2 show that the volume of ice contained in the Antarctic ice sheet (27 million km3) and its potential contribution to sea-level rise (58 m) are similar to those of Bedmap1, but the mean thickness of the ice sheet is 4.6% greater, the mean depth of the bed beneath the grounded ice sheet is 72 m lower and the area of ice sheet grounded on bed below sea level is increased by 10%. The Bedmap2 compilation highlights several areas beneath the ice sheet where the bed elevation is substantially lower than the deepest bed indicated by Bedmap1. These products, along with grids of data coverage and uncertainty, provide new opportunities for detailed modelling of the past and future evolution of the Antarctic ice sheets.
1,678 citations
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TL;DR: The deuterium concentrations (δD vs SMOW) of biogenic methanes from world-wide occurrences range from −180 to −280% and were found to be depleted in deutrium by approx. 160%.
1,085 citations
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TL;DR: It is documented that bending-related faulting of the incoming plate at the Middle America trench creates a pervasive tectonic fabric that cuts across the crust, penetrating deep into the mantle.
Abstract: The dehydration of subducting oceanic crust and upper mantle has been inferred both to promote the partial melting leading to arc magmatism and to induce intraslab intermediate-depth earthquakes, at depths of 50-300 km. Yet there is still no consensus about how slab hydration occurs or where and how much chemically bound water is stored within the crust and mantle of the incoming plate. Here we document that bending-related faulting of the incoming plate at the Middle America trench creates a pervasive tectonic fabric that cuts across the crust, penetrating deep into the mantle. Faulting is active across the entire ocean trench slope, promoting hydration of the cold crust and upper mantle surrounding these deep active faults. The along-strike length and depth of penetration of these faults are also similar to the dimensions of the rupture area of intermediate-depth earthquakes.
852 citations
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TL;DR: At present bioleaching is used essentially for the recovery of copper, uranium and gold, and the main techniques employed are heap, dump and in situ leaching.
Abstract: Bioleaching is a simple and effective technology for metal extraction from low-grade ores and mineral concentrates. Metal recovery from sulfide minerals is based on the activity of chemolithotrophic bacteria, mainly Thiobacillus ferrooxidans and T. thiooxidans, which convert insoluble metal sulfides into soluble metal sulfates. Non-sulfide ores and minerals can be treated by heterotrophic bacteria and by fungi. In these cases metal extraction is due to the production of organic acids and chelating and complexing compounds excreted into the environment. At present bioleaching is used essentially for the recovery of copper, uranium and gold, and the main techniques employed are heap, dump and in situ leaching. Tank leaching is practised for the treatment of refractory gold ores. Bioleaching has also some potential for metal recovery and detoxification of industrial waste products, sewage sludge and soil contaminated with heavy metals.
788 citations
Authors
Showing all 1394 results
Name | H-index | Papers | Citations |
---|---|---|---|
Christian Weber | 122 | 776 | 53842 |
Roland W. Scholz | 64 | 289 | 15387 |
Ursula Röhl | 60 | 164 | 14574 |
Jian Lin | 59 | 172 | 13507 |
Markus Weiler | 58 | 257 | 11418 |
Richard D Norris | 56 | 195 | 14928 |
János Urai | 55 | 323 | 10189 |
Oliver Friedrich | 53 | 302 | 10004 |
Bernhard M. Krooss | 50 | 150 | 9697 |
Thomas Wagner | 46 | 213 | 8530 |
Axel Schippers | 43 | 152 | 7991 |
Martin Schoell | 40 | 76 | 10097 |
Michael E Weber | 39 | 179 | 4810 |
Jens Gutzmer | 38 | 199 | 5476 |
Dieter Franke | 35 | 105 | 3666 |