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Temperature changing process of the Hokkaido (Japan) earthquake on 25 September 2003
Temperature changing process Hokkaido earthquake 25 September 2003
2010/1/4
The paper introduced the model of the additive tectonics stress from celestial tide-generating force. The model can be used to explain the relationship between additive tectonics stress and seismic fa...
Maps of geoelectric sections of Turkey, Iran, Afghanistan, Pakistan, Korea, and Japan
Maps geoelectric sections
2009/12/30
Results of geoelectric mapping of some Asian countries with high seismic activity are presented. The methodology of the geoelectric mapping is considered, and the corresponding maps of geoelectric sec...
Acyclic hydrocarbons and ketones in cold-seep carbonates from central Hokkaido, northern Japan
anaerobic oxidation of methane biomarker cold-seep carbonate fossil chemosynthetic community isoprenoid ketones
2017/8/10
Limestones associated with fossil chemosynthetic biological communities are found in Tappu Kanajirizawa and Teshionakagawa Abeshinaigawa, central Hokkaido, northern Japan. They were studied to ascerta...
Attempt to determine U-Th ages of calcite veins in the Nojima fault zone, Japan
calcite U-Th dating Nojima fault zone geochronology ICP-MS
2017/8/10
Fluids within fault zones can change the physical and chemical properties of fault materials and have a substantial influence on faulting. Therefore it is important to understand the nature and timing...
Heterogeneities of hydrocarbon compositions in mudstones of a turbiditic sequence of the Miocene Kawabata Formation in Yubari, central Hokkaido, Japan
hydrocarbon biomarker turbiditic sequence geochemical heterogeneity terrigenous material transport paleoenvir
2017/8/10
Biomarker analyses of aliphatic and aromatic hydrocarbons were conducted on the upper and lower parts of individual mudstones in a turbiditic sequence of the Miocene Kawabata Formation, Yubari, centra...
Geographical distribution of 3He/4He ratios and seismic tomography in Japan
helium isotopes seismic tomography Japanese islands geotectonics arc magma
2017/8/10
he 3He/4He ratios (Ra) of natural gas, volcanic fluid, and groundwater are compiled in the Japanese Islands and their geographical distributions are discussed in the tectonic frame work of subduction ...
Simultaneous monitoring of gas concentration and groundwater level at the Omaezaki 500-m well, central Japan: Spike-like concentration change of methane
groundwater continuous monitoring quadrupole mass spectrometer methane concentration change
2017/8/10
Simultaneous monitoring of the gas concentration and water level in groundwater was achieved at the Omaezaki open well. Coaxially arranged pipes inserted into the well enabled us to pump groundwater d...
Isotopic fractionation of SO2 and H2S gases during the absorption by KOH solution, with the application to volcanic gas monitoring at Miyakejima Island, Japan
volcanic gas Miyakejima isotopic fractionation diffusion sulfur
2017/8/10
The chemical trap method has been used for monitoring of volcanic activity. In this method, a strong alkaline water solution was exposed in ambient air. Acidic gases, such as SO2, H2S, HCl and HF are ...
Temporal variation in chemical composition of the volcanic plume from Aso volcano, Japan, measured by remote FT-IR spectroscopy
volcanic gas hydrothermal interaction crater lake remote FT-IR spectroscopy Aso volcano
2017/8/10
Remote measurements of chemical compositions of the Aso volcanic plume using an FT-IR spectral radiometer were carried out at the 1st crater of Mt. Nakadake, Aso volcano, Japan, for six times from 199...
A Climatological View of the Kuroshio/Oyashio System East of Japan
A Climatological View Kuroshio/Oyashio System East of Japan
2008/8/1
Time-averaged structure of the Kuroshio/Oyashio system east of Japan was examined using historical hydrographic data. Unlike most of the earlier climatological analyses, the data were averaged along i...
Japan Sea Thermohaline Structure and Circulation. Part II: A Variational P-Vector Method
Japan Sea Thermohaline Structure Circulation P-Vector Method
2008/7/31
The second part of this work investigates the seasonal variabilities of the Japan/East Sea (JES) circulation using the U.S. Navy Generalized Digital Environmental Model (GDEM) climatological temperatu...
Effects of Stratification and Bottom Topography on the Kuroshio Path Variation South of Japan. Part I: Dependence of the Path Selection on Velocity
Stratification Bottom Topography Kuroshio Path Variation
2008/7/22
Numerical experiments are executed using a two-layer inflow–outflow ocean model with simplified geometry to investigate the effects of stratification and bottom topography on the path variation of the...
Formation and Circulation Processes of Intermediate Water in the Japan Sea
Circulation Processes Intermediate Water Japan Sea
2008/7/21
The formation and circulation processes of intermediate water in the Japan Sea have been investigated by study of the subduction of mixed layer water. To simulate realistic seasonal variations in the ...
Impact of Upper Ocean–Topographical Coupling and Isopycnal Outcropping in Japan/East Sea Models with 1/8° to 1/64° Resolution
Upper Ocean–Topographical Coupling Isopycnal Outcropping Japan/East Sea Models
2008/7/3
A regional primitive equation ocean model is used to investigate the impact of grid resolution, baroclinic instability, bottom topography, and isopycnal outcropping on the dynamics of the wind and thr...
Two-Layer Model on the Branching of the Kuroshio Southwest of Kyushu, Japan
Two-Layer Model Branching Kuroshio Southwest Japan
2008/7/3
Observations suggest that a separation branch of the Kuroshio appears southwest of Kyushu, Japan. The observed density and surface current fields clearly show a separation branch in autumn. However, t...