Methane in coastal sea water, sea ice, and bottom sediments, Beaufort Sea, Alaska
This report summarizes data acquired from 1990 to 1994 for the gas-hydrate portion of the USGS project "Permafrost and gas hydrate as possible sources of methane" of the USGS Global Change and Climate History program. The objective of this project has been to test the hypothesis that gas h...
Main Authors: | , |
---|---|
Format: | Dataset |
Language: | unknown |
Published: |
USGS Science Data Catalog
1995
|
Subjects: | |
Online Access: | https://search.dataone.org/view/6b865c41-6266-48e8-a9a6-bba35a46938a |
id |
dataone:6b865c41-6266-48e8-a9a6-bba35a46938a |
---|---|
record_format |
openpolar |
spelling |
dataone:6b865c41-6266-48e8-a9a6-bba35a46938a 2024-06-03T18:46:37+00:00 Methane in coastal sea water, sea ice, and bottom sediments, Beaufort Sea, Alaska Lorenson, Thomas D. Kvenvolden, Keith A. ENVELOPE(-152.20717,-144.99834,72.648,70.05267) BEGINDATE: 1992-05-01T00:00:00Z ENDDATE: 1994-08-26T00:00:00Z 1995-01-01T00:00:00Z https://search.dataone.org/view/6b865c41-6266-48e8-a9a6-bba35a46938a unknown USGS Science Data Catalog marine chemistry gas hydrate resources petroleum sea ice concentration geospatial datasets methane gas hydrate sea ice sea water 1300 - Marine Geology 1900 - Geochemistry geoscientificInformation f02185 = North Slope OC10 = Arctic Beaufort Sea Alaska AK Dataset 1995 dataone:urn:node:USGS_SDC 2024-06-03T18:09:01Z This report summarizes data acquired from 1990 to 1994 for the gas-hydrate portion of the USGS project "Permafrost and gas hydrate as possible sources of methane" of the USGS Global Change and Climate History program. The objective of this project has been to test the hypothesis that gas hydrate deposits of the Beaufort Sea continental shelf are destabilized by the ~10°C temperature increase that has resulted from the Holocene transgression of the Arctic Ocean. To test this idea we have selected an area off the north coast of Alaska centered on Harrison Bay. We have measured the concentration of methane in surficial sediments, in the water column when ice is present and absent, and in seasonal sea ice. Our results show that more methane is present in the water when ice is present than when ice is absent, and that methane is also present within the ice itself, often at higher concentrations than in the water. Thus the Beaufort Sea shelf of Alaska is a seasonal source of methane. The primary source of this methane has not yet been defined, but gas hydrate is a reasonable candidate. Dataset Arctic Arctic Ocean Beaufort Sea Ice north slope permafrost Sea ice Alaska USGS Science Data Catalog (via DataONE) Arctic Arctic Ocean ENVELOPE(-152.20717,-144.99834,72.648,70.05267) |
institution |
Open Polar |
collection |
USGS Science Data Catalog (via DataONE) |
op_collection_id |
dataone:urn:node:USGS_SDC |
language |
unknown |
topic |
marine chemistry gas hydrate resources petroleum sea ice concentration geospatial datasets methane gas hydrate sea ice sea water 1300 - Marine Geology 1900 - Geochemistry geoscientificInformation f02185 = North Slope OC10 = Arctic Beaufort Sea Alaska AK |
spellingShingle |
marine chemistry gas hydrate resources petroleum sea ice concentration geospatial datasets methane gas hydrate sea ice sea water 1300 - Marine Geology 1900 - Geochemistry geoscientificInformation f02185 = North Slope OC10 = Arctic Beaufort Sea Alaska AK Lorenson, Thomas D. Kvenvolden, Keith A. Methane in coastal sea water, sea ice, and bottom sediments, Beaufort Sea, Alaska |
topic_facet |
marine chemistry gas hydrate resources petroleum sea ice concentration geospatial datasets methane gas hydrate sea ice sea water 1300 - Marine Geology 1900 - Geochemistry geoscientificInformation f02185 = North Slope OC10 = Arctic Beaufort Sea Alaska AK |
description |
This report summarizes data acquired from 1990 to 1994 for the gas-hydrate portion of the USGS project "Permafrost and gas hydrate as possible sources of methane" of the USGS Global Change and Climate History program. The objective of this project has been to test the hypothesis that gas hydrate deposits of the Beaufort Sea continental shelf are destabilized by the ~10°C temperature increase that has resulted from the Holocene transgression of the Arctic Ocean. To test this idea we have selected an area off the north coast of Alaska centered on Harrison Bay. We have measured the concentration of methane in surficial sediments, in the water column when ice is present and absent, and in seasonal sea ice. Our results show that more methane is present in the water when ice is present than when ice is absent, and that methane is also present within the ice itself, often at higher concentrations than in the water. Thus the Beaufort Sea shelf of Alaska is a seasonal source of methane. The primary source of this methane has not yet been defined, but gas hydrate is a reasonable candidate. |
format |
Dataset |
author |
Lorenson, Thomas D. Kvenvolden, Keith A. |
author_facet |
Lorenson, Thomas D. Kvenvolden, Keith A. |
author_sort |
Lorenson, Thomas D. |
title |
Methane in coastal sea water, sea ice, and bottom
sediments, Beaufort Sea, Alaska |
title_short |
Methane in coastal sea water, sea ice, and bottom
sediments, Beaufort Sea, Alaska |
title_full |
Methane in coastal sea water, sea ice, and bottom
sediments, Beaufort Sea, Alaska |
title_fullStr |
Methane in coastal sea water, sea ice, and bottom
sediments, Beaufort Sea, Alaska |
title_full_unstemmed |
Methane in coastal sea water, sea ice, and bottom
sediments, Beaufort Sea, Alaska |
title_sort |
methane in coastal sea water, sea ice, and bottom
sediments, beaufort sea, alaska |
publisher |
USGS Science Data Catalog |
publishDate |
1995 |
url |
https://search.dataone.org/view/6b865c41-6266-48e8-a9a6-bba35a46938a |
op_coverage |
ENVELOPE(-152.20717,-144.99834,72.648,70.05267) BEGINDATE: 1992-05-01T00:00:00Z ENDDATE: 1994-08-26T00:00:00Z |
long_lat |
ENVELOPE(-152.20717,-144.99834,72.648,70.05267) |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Beaufort Sea Ice north slope permafrost Sea ice Alaska |
genre_facet |
Arctic Arctic Ocean Beaufort Sea Ice north slope permafrost Sea ice Alaska |
_version_ |
1800868842422927360 |