Zobrazeno 1 - 10
of 23
pro vyhledávání: '"J. Kopf"'
Autor:
Achim J Kopf, Demian M. Saffer
Publikováno v:
Geochemistry, Geophysics, Geosystems. 17:4992-5008
At many subduction zones, pore water geochemical anomalies at seafloor seeps and in shallow boreholes indicate fluid flow and chemical transport from depths of several km. Identifying the source regions for these fluids is essential toward quantifyin
Autor:
Tomohiro Toki, Andre Hüpers, C. Geoffrey Wheat, Ryuichi Shinjo, Achim J Kopf, Simone A Kasemann, Anette Meixner, Chen-Feng You
Publikováno v:
Geochimica et Cosmochimica Acta. 193:100-118
Compositional changes, dehydration reactions and fluid flow in subducted sediments influence seismogenesis and arc magmatism in subduction zones. To identify fluid flow and water–rock interaction processes in the western Nankai Trough subduction zo
Autor:
Kiichiro Kawamura, Gregory F. Moore, Jan Sverre Laberg, Michael Strasser, Achim J Kopf, Tiago Marcos Alves, Shu Gao
Publikováno v:
Landslides. 14:849-860
The processes of flow deformation of marine mass-transport sediments, including their ability to affect the underlying substrate and add mass during sediment flow events, are addressed based on sedimentological analyses of strata from the distal part
Publikováno v:
Marine Geology (0025-3227) (Elsevier Science Bv), 2015-11, Vol. 369, P. 162-181
In the landslide-prone area near the Nice international airport, southeastern France, an interdisciplinary approach is applied to develop realistic lithological/geometrical profiles and geotechnical/strength sub-seafloor models. Such models are indis
Autor:
Jiangong Wei, Timo Fleischmann, Gerhard Bohrmann, Paul Wintersteller, Patrizia Geprägs, Sebastian Hammerschmidt, Achim J Kopf, Thomas Pape
Publikováno v:
Geochemistry, Geophysics, Geosystems. 15:2180-2194
Twelve submarine mud volcanoes (MV) in the Kumano forearc basin within the Nankai Trough subduction zone were investigated for hydrocarbon origins and fluid dynamics. Gas hydrates diagnostic for methane concentrations exceeding solubilities were reco
Autor:
Achim J Kopf, Ulrich Lemmin, David Andrew Barry, Juan Pablo Corella, Nicolas Le Dantec, Nina Stark, Stéphanie Girardclos
Publikováno v:
Limnology and Oceanography: Methods. 11:529-539
Dynamic penetrometers reveal information about seafloor strength, stratification, stability, and sediment remobilization. However, positioning is often limited to a range of meters making it difficult to target small-scale geomorphologic features. De
Publikováno v:
Geo-Marine Letters. 33:405-418
Along the Nankai Trough megasplay fault off SE Japan, the effect of fluid migration on subduction-related seismogenesis and tsunamigenesis remains unresolved. To investigate the existence and role of fluid flow, a SmartPlug borehole observatory was i
Autor:
Jens Matthiessen, Frank Niessen, Ruediger Stein, Gregor Knorr, Michael Schreck, Wilfried Jokat, Kirsten Fahl, Achim J Kopf, Matthias Forwick, Laura Jensen, Gerrit Lohmann, Catalina Gebhardt, Michael A. Kaminski
Publikováno v:
EPIC3Nature Communications, 7, pp. 1-13
Nature Communications
Nature Communications, Vol 7, Iss 1, Pp 1-13 (2016)
Nature Communications
Nature Communications, Vol 7, Iss 1, Pp 1-13 (2016)
Although the permanently to seasonally ice-covered Arctic Ocean is a unique and sensitive component in the Earth's climate system, the knowledge of its long-term climate history remains very limited due to the restricted number of pre-Quaternary sedi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fefd8ad83911ec50f129708f630ff32d
https://hdl.handle.net/10013/epic.47736
https://hdl.handle.net/10013/epic.47736
Autor:
Masanori Kyo, Achim J Kopf, Demian M. Saffer, Eiichiro Araki, Sean Toczko, Takashi Yokobiki, Shuhei Nishida, Tomo Saruhashi, Toshinori Kimura, Yuya Machida, Katsuyoshi Kawaguchi
Publikováno v:
2016 Techno-Ocean (Techno-Ocean).
Real-time borehole observation system for seismogenic zone monitoring called long-term borehole monitoring system (LTBMS) was developed to give better access to the seismogenic faults nucleating earthquakes while avoiding observational effects of dam
Publikováno v:
Journal of Sedimentary Research. 82:540-544
We tested the ability of a small dynamic penetrometer, Nimrod, to infer geotechnical properties of sediment mixtures in the inner shelf. The penetrometer is light and easy to operate, and its operation by scuba divers ensures a greater degree of prec