Long-term, continuous OsmoSampler results for interstitial waters from an active gas venting site at a shallow gas hydrate field, Umitaka Spur, eastern margin of the Japan Sea

2019 ◽  
Vol 104 ◽  
pp. 25-32
Author(s):  
Satoko Owari ◽  
Hitoshi Tomaru ◽  
Ryo Matsumoto
Keyword(s):  
Gas Hydrate ◽  
Japan Sea ◽  
Shallow Gas ◽  
Eastern Margin ◽  
The Japan Sea ◽  
Interstitial Waters

scholarly journals Soil properties of subsurface sediments collected from shallow gas hydrate province in the eastern margin of the Japan Sea

2018 ◽  
Vol 76 (2) ◽  
pp. 61-75
Author(s):  
Shinsuke Aoki ◽  
Shu Kyono ◽  
Takeshi Oi ◽  
Satoko Owari ◽  
Fumio Akiba ◽  
...  
Keyword(s):  
Soil Properties ◽  
Gas Hydrate ◽  
Japan Sea ◽  
Shallow Gas ◽  
Eastern Margin ◽  
The Japan Sea ◽  
Subsurface Sediments

scholarly journals Geochemistry of pore waters from gas hydrate research in the eastern margin of the Japan Sea (MD179)

2012 ◽  
Vol 77 (4) ◽  
pp. 262-267 ◽  
Author(s):  
Hitoshi Tomaru ◽  
Akihiro Hachikubo ◽  
Katsunori Yanagawa ◽  
Yasuyuki Muramatsu ◽  
Hiroya Anzai ◽  
...  
Keyword(s):  
Gas Hydrate ◽  
Japan Sea ◽  
Pore Waters ◽  
Eastern Margin ◽  
The Japan Sea

scholarly journals Heat Flow Distribution around the Joetsu Gas Hydrate Field, Western Joetsu Basin, Eastern Margin of the Japan Sea

2009 ◽  
Vol 118 (5) ◽  
pp. 986-1007 ◽  
Author(s):  
Hideaki MACHIYAMA ◽  
Masataka KINOSHITA ◽  
Rika TAKEUCHI ◽  
Ryo MATSUMOTO ◽  
Makoto YAMANO ◽  
...  
Keyword(s):  
Heat Flow ◽  
Gas Hydrate ◽  
Flow Distribution ◽  
Japan Sea ◽  
Eastern Margin ◽  
The Japan Sea

scholarly journals Geochemical Analysis as a Complementary Tool to Estimate the Uplift of Sediments Caused by Shallow Gas Hydrates in Mounds at the Seafloor of Joetsu Basin, Eastern Margin of the Japan Sea

2012 ◽  
Vol 2012 ◽  
pp. 1-14 ◽  
Author(s):  
Antonio Fernando Menezes Freire ◽  
Ryo Matsumoto ◽  
Fumio Akiba
Keyword(s):  
Gas Hydrate ◽  
Japan Sea ◽  
Authigenic Carbonate ◽  
Anaerobic Oxidation Of Methane ◽  
Geochemical Analysis ◽  
Terrestrial Organic Matter ◽  
The Holocene ◽  
Eastern Margin ◽  
The Japan Sea ◽  
Holocene Sediments

The Holocene sediments of the eastern margin of the Japan Sea are characterized by high total organic carbon (TOC) and total nitrogen (TN) contents, low TOC/TN and TS/TOC values with enriched δ13Corg signatures, as a result of high marine productivity during present oxic highstand. On the other hand, the LGM sediments are characterized by low TOC and TN contents, high TOC/TN and TS/TOC values with depleted δ13Corg signatures, characteristic of C3-derived terrestrial organic matter input during that anoxic lowstand. However, at the top of mounds at the seafloor, where gas hydrate and authigenic carbonate nodules occur, the host sediments have a mixture of both Holocene and LGM geochemical signatures. Both gas hydrate and authigenic carbonate, formed by the anaerobic oxidation of methane, increased the sedimentary volume and caused an uplift of older sediments, inducing mound formation. The thickness of the Holocene sediments over mounds is very small or absent exposing the last glacial maximum (LGM) sediments to the seafloor. The uplift of the LGM sediments within mounds is estimated to be >2 m. We conducted geochemical analysis to detect such sediment movement, using samples collected by shallow cores in the Joetsu Basin, eastern margin of the Japan Sea.

Rifting and basin inversion in the eastern margin of the Japan Sea

Island Arc ◽  
1995 ◽  
Vol 4 (3) ◽  
pp. 166-181 ◽  
Author(s):  
Yukinobu Okamura ◽  
Mahito Watanabe ◽  
Rie Morijiri ◽  
Mikio Satoh
Keyword(s):  
Japan Sea ◽  
Basin Inversion ◽  
Eastern Margin ◽  
The Japan Sea

Comparison of stable isotopes, ratios of 36Cl/Cl and 129I/127I in brine and deep groundwater from the Pacific coastal region and the eastern margin of the Japan Sea

2012 ◽  
Vol 27 (12) ◽  
pp. 2389-2402 ◽  
Author(s):  
Yasunori Mahara ◽  
Tomoko Ohta ◽  
Tomochika Tokunaga ◽  
Hiroyuki Matsuzaki ◽  
Eiji Nakata ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Coastal Region ◽  
Japan Sea ◽  
Deep Groundwater ◽  
Eastern Margin ◽  
The Pacific ◽  
The Japan Sea

Seismic observations at a seismic gap in the eastern margin of the Japan Sea using ocean bottom seismometers

1999 ◽  
Vol 302 (1-2) ◽  
pp. 1-7 ◽  
Author(s):  
Toshinori Sato ◽  
Gou Fujie ◽  
Sadayuki Koresawa ◽  
Junzo Kasahara ◽  
Keisuke Tanaka ◽  
...  
Keyword(s):  
Japan Sea ◽  
Seismic Gap ◽  
Ocean Bottom ◽  
Eastern Margin ◽  
The Japan Sea ◽  
Ocean Bottom Seismometers
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