Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
Sensitivity of the Arctic Ocean gas hydrate to climate changes in the period of 1948-2015. / Malakhova, Valentina V.; Golubeva, Elena N.; Iakshina, DIna F.
23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics. ed. / GG Matvienko; OA Romanovskii. Vol. 10466 SPIE, 2017. 1046656 (Proceedings of SPIE; Vol. 10466).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
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TY - GEN
T1 - Sensitivity of the Arctic Ocean gas hydrate to climate changes in the period of 1948-2015
AU - Malakhova, Valentina V.
AU - Golubeva, Elena N.
AU - Iakshina, DIna F.
PY - 2017/1/1
Y1 - 2017/1/1
N2 - The objective of the present study is to analyze the interactions between a methane hydrates stability zone and the ocean temperature variations and to define the hydrate sensitivity to the contemporary warming in the Arctic Ocean. To obtain the spatial-temporary variability of the ocean bottom temperature we employ the ICMMG regional Arctic-North Atlantic ocean model that has been developed in the Institute of Computational Mathematics and Mathematical Geophysics. With the ice-ocean model the Arctic bottom water temperatures were analyzed. The resulting warming ocean bottom water is spatially inhomogeneous, with a strong impact by the Atlantic inflow on shallow regions of 200-500 m depth. Results of the mathematical modeling of the dynamics of methane hydrate stability zone in the Arctic Ocean sediment are reported. We find that the reduction of the methane hydrate stability zone occurs in the Arctic Ocean between 250 and 400 m water depths within the upper 100 m of sediment in the area influenced by the Atlantic inflow. We have identified the areas of the Arctic Ocean where an increase in methane release is probable to occur at the present time.
AB - The objective of the present study is to analyze the interactions between a methane hydrates stability zone and the ocean temperature variations and to define the hydrate sensitivity to the contemporary warming in the Arctic Ocean. To obtain the spatial-temporary variability of the ocean bottom temperature we employ the ICMMG regional Arctic-North Atlantic ocean model that has been developed in the Institute of Computational Mathematics and Mathematical Geophysics. With the ice-ocean model the Arctic bottom water temperatures were analyzed. The resulting warming ocean bottom water is spatially inhomogeneous, with a strong impact by the Atlantic inflow on shallow regions of 200-500 m depth. Results of the mathematical modeling of the dynamics of methane hydrate stability zone in the Arctic Ocean sediment are reported. We find that the reduction of the methane hydrate stability zone occurs in the Arctic Ocean between 250 and 400 m water depths within the upper 100 m of sediment in the area influenced by the Atlantic inflow. We have identified the areas of the Arctic Ocean where an increase in methane release is probable to occur at the present time.
KW - Arctic Ocean
KW - Arctic shelf
KW - bottom water temperature
KW - climate change influence
KW - methane hydrates stability zone
KW - modeling
KW - PERMAFROST
KW - STABILITY ZONE
KW - SVALBARD
KW - INVENTORY
KW - METHANE HYDRATE
KW - ADVECTION
KW - SHELF
KW - HEAT-FLOW
UR - http://www.scopus.com/inward/record.url?scp=85043307643&partnerID=8YFLogxK
U2 - 10.1117/12.2285524
DO - 10.1117/12.2285524
M3 - Conference contribution
AN - SCOPUS:85043307643
SN - 978-1-5106-1413-0
VL - 10466
T3 - Proceedings of SPIE
BT - 23rd International Symposium on Atmospheric and Ocean Optics
A2 - Matvienko, GG
A2 - Romanovskii, OA
PB - SPIE
T2 - 23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics
Y2 - 3 July 2017 through 7 July 2017
ER -
ID: 10455432