RV SONNE CRUISE REPORT SO143 - TECFLUX - I - 1999 : TECTONICALLY-INDUCED MATERIAL FLUXES, HONOLULU - ASTORIA - SAN DIEGO, JUNE 29 - SEPTEMBER 6 , 1999
The TECFLUX program (= TECtonically induced FLUXes) addresses geophysical, biogeochemical, and hydrographic processes associated with fluid venting from the Cascadia continental margin, specifically the processes resulting from the methane hydrate dynamics at Hydrate Ridge. An international group of...
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Language: | English |
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GEOMAR Forschungszentrum für Marine Geowissenschaften
2000
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Online Access: | https://oceanrep.geomar.de/id/eprint/25904/ https://oceanrep.geomar.de/id/eprint/25904/1/geomar%20report%2093.pdf https://doi.org/10.3289/GEOMAR_REP_93_2000 |
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ftoceanrep:oai:oceanrep.geomar.de:25904 2023-05-15T17:11:53+02:00 RV SONNE CRUISE REPORT SO143 - TECFLUX - I - 1999 : TECTONICALLY-INDUCED MATERIAL FLUXES, HONOLULU - ASTORIA - SAN DIEGO, JUNE 29 - SEPTEMBER 6 , 1999 Leg S0143-1a: Honolulu - Astoria June 29 - July 12, 1999, Leg S0143-1b: Astoria - Astoria July 14 - July 30, 1999 Leg S0143-2: Astoria - Astoria July 31 - August 25, 1999, Leg S0143-3: Astoria - San Diego August 26 - September 6 , 1999 Bohrmann, Gerhard Linke, Peter Suess, Erwin Pfannkuche, Olaf 2000 text https://oceanrep.geomar.de/id/eprint/25904/ https://oceanrep.geomar.de/id/eprint/25904/1/geomar%20report%2093.pdf https://doi.org/10.3289/GEOMAR_REP_93_2000 en eng GEOMAR Forschungszentrum für Marine Geowissenschaften https://oceanrep.geomar.de/id/eprint/25904/1/geomar%20report%2093.pdf Bohrmann, G., Linke, P., Suess, E. and Pfannkuche, O., eds. (2000) RV SONNE CRUISE REPORT SO143 - TECFLUX - I - 1999 : TECTONICALLY-INDUCED MATERIAL FLUXES, HONOLULU - ASTORIA - SAN DIEGO, JUNE 29 - SEPTEMBER 6 , 1999 Leg S0143-1a: Honolulu - Astoria June 29 - July 12, 1999, Leg S0143-1b: Astoria - Astoria July 14 - July 30, 1999 Leg S0143-2: Astoria - Astoria July 31 - August 25, 1999, Leg S0143-3: Astoria - San Diego August 26 - September 6 , 1999. Open Access . GEOMAR-Report, 093 . GEOMAR Forschungszentrum für Marine Geowissenschaften, Kiel, 248 pp. DOI 10.3289/GEOMAR_REP_93_2000 <https://doi.org/10.3289/GEOMAR_REP_93_2000>. doi:10.3289/GEOMAR_REP_93_2000 cc_by_3.0 info:eu-repo/semantics/openAccess Report NonPeerReviewed 2000 ftoceanrep https://doi.org/10.3289/GEOMAR_REP_93_2000 2023-04-07T15:14:53Z The TECFLUX program (= TECtonically induced FLUXes) addresses geophysical, biogeochemical, and hydrographic processes associated with fluid venting from the Cascadia continental margin, specifically the processes resulting from the methane hydrate dynamics at Hydrate Ridge. An international group of scientists from institutions in Germany, the USA, Canada, and Japan (Table 1 and list of Participating Institutions) established a long-term research program based on the initial discovery in 1996 of methane hydrate exposures. At this margin site mixed methane-sulfide hydrates and carbonates form a pavement along the crest of the ridge at water depths between 600-1000 m. Vent fields from which methane-charged, low-salinity fluids containing sulfide, ammonia, 4He, and isotopically light C02 escape, are associated with these exposures. The fluid emissions characterize a newly recognized mechanism of dewatering at convergent margins. However, the rates of discharge, the fluctuations and frequency of pulses, as well as the mechanisms responsible for the modulations of flow are totally unknown. Also immediate and intriguing questions concerning the composition, depth distribution, interlayering with sediment, and physical properties of these near-surface gas hydrates were to be addressed during SO Cruise 143. Report Methane hydrate OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Canada |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The TECFLUX program (= TECtonically induced FLUXes) addresses geophysical, biogeochemical, and hydrographic processes associated with fluid venting from the Cascadia continental margin, specifically the processes resulting from the methane hydrate dynamics at Hydrate Ridge. An international group of scientists from institutions in Germany, the USA, Canada, and Japan (Table 1 and list of Participating Institutions) established a long-term research program based on the initial discovery in 1996 of methane hydrate exposures. At this margin site mixed methane-sulfide hydrates and carbonates form a pavement along the crest of the ridge at water depths between 600-1000 m. Vent fields from which methane-charged, low-salinity fluids containing sulfide, ammonia, 4He, and isotopically light C02 escape, are associated with these exposures. The fluid emissions characterize a newly recognized mechanism of dewatering at convergent margins. However, the rates of discharge, the fluctuations and frequency of pulses, as well as the mechanisms responsible for the modulations of flow are totally unknown. Also immediate and intriguing questions concerning the composition, depth distribution, interlayering with sediment, and physical properties of these near-surface gas hydrates were to be addressed during SO Cruise 143. |
author2 |
Bohrmann, Gerhard Linke, Peter Suess, Erwin Pfannkuche, Olaf |
format |
Report |
title |
RV SONNE CRUISE REPORT SO143 - TECFLUX - I - 1999 : TECTONICALLY-INDUCED MATERIAL FLUXES, HONOLULU - ASTORIA - SAN DIEGO, JUNE 29 - SEPTEMBER 6 , 1999 |
spellingShingle |
RV SONNE CRUISE REPORT SO143 - TECFLUX - I - 1999 : TECTONICALLY-INDUCED MATERIAL FLUXES, HONOLULU - ASTORIA - SAN DIEGO, JUNE 29 - SEPTEMBER 6 , 1999 |
title_short |
RV SONNE CRUISE REPORT SO143 - TECFLUX - I - 1999 : TECTONICALLY-INDUCED MATERIAL FLUXES, HONOLULU - ASTORIA - SAN DIEGO, JUNE 29 - SEPTEMBER 6 , 1999 |
title_full |
RV SONNE CRUISE REPORT SO143 - TECFLUX - I - 1999 : TECTONICALLY-INDUCED MATERIAL FLUXES, HONOLULU - ASTORIA - SAN DIEGO, JUNE 29 - SEPTEMBER 6 , 1999 |
title_fullStr |
RV SONNE CRUISE REPORT SO143 - TECFLUX - I - 1999 : TECTONICALLY-INDUCED MATERIAL FLUXES, HONOLULU - ASTORIA - SAN DIEGO, JUNE 29 - SEPTEMBER 6 , 1999 |
title_full_unstemmed |
RV SONNE CRUISE REPORT SO143 - TECFLUX - I - 1999 : TECTONICALLY-INDUCED MATERIAL FLUXES, HONOLULU - ASTORIA - SAN DIEGO, JUNE 29 - SEPTEMBER 6 , 1999 |
title_sort |
rv sonne cruise report so143 - tecflux - i - 1999 : tectonically-induced material fluxes, honolulu - astoria - san diego, june 29 - september 6 , 1999 |
publisher |
GEOMAR Forschungszentrum für Marine Geowissenschaften |
publishDate |
2000 |
url |
https://oceanrep.geomar.de/id/eprint/25904/ https://oceanrep.geomar.de/id/eprint/25904/1/geomar%20report%2093.pdf https://doi.org/10.3289/GEOMAR_REP_93_2000 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
https://oceanrep.geomar.de/id/eprint/25904/1/geomar%20report%2093.pdf Bohrmann, G., Linke, P., Suess, E. and Pfannkuche, O., eds. (2000) RV SONNE CRUISE REPORT SO143 - TECFLUX - I - 1999 : TECTONICALLY-INDUCED MATERIAL FLUXES, HONOLULU - ASTORIA - SAN DIEGO, JUNE 29 - SEPTEMBER 6 , 1999 Leg S0143-1a: Honolulu - Astoria June 29 - July 12, 1999, Leg S0143-1b: Astoria - Astoria July 14 - July 30, 1999 Leg S0143-2: Astoria - Astoria July 31 - August 25, 1999, Leg S0143-3: Astoria - San Diego August 26 - September 6 , 1999. Open Access . GEOMAR-Report, 093 . GEOMAR Forschungszentrum für Marine Geowissenschaften, Kiel, 248 pp. DOI 10.3289/GEOMAR_REP_93_2000 <https://doi.org/10.3289/GEOMAR_REP_93_2000>. doi:10.3289/GEOMAR_REP_93_2000 |
op_rights |
cc_by_3.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3289/GEOMAR_REP_93_2000 |
_version_ |
1766068634859339776 |