搜索结果: 1-15 共查到“地球化学 Japan”相关记录26条 . 查询时间(0.046 秒)
Controlling factors in stalagmite oxygen isotopic composition and the paleoprecipitation record for the last 1,100 years in Northeast Japan
ortheast Japan stalagmite d18O growth rate precipitation famine records
2017/4/10
Stable oxygen isotopic analysis was performed on the UT-A stalagmite with annual microbanding from the Uchimagido
Cave in Iwate Prefecture on the Pacific side of Northeast Japan. High-resolution anal...
Chemical and isotopic composition of fumarolic gases at Iwate volcano, Japan, during and after seismic activity in 1998: implications for the modification of ascending volcanic gases
Volcanoes volcanic earthquakes expectations and volcanic gases seismic activity the concentration of hydrochloric acid
2015/8/27
In 1998, there were many volcanic earthquakes recorded at Iwate volcano, Japan. Although an eruption was anticipated, it never occurred. Fumarolic gases were sampled at the volcano on six occasions du...
Hydrochemistry and isotopic characteristics of non-volcanic hot springs around the Miocene Kofu granitic complex surrounding the Kofu Basin in the South Fossa Magna region, central Honshu, Japan
Kofu granitic complex non-volcanic hot spring chemical property water–rock interaction δD·δ18O·δ34S value
2017/4/11
Chemical and stable isotopic compositions (δD, δ18O, and δ34S) of non-volcanic hot spring waters around the Miocene
Kofu granitic complex surrounding the Kofu basin in the South Fossa Magna region of...
Hydrogen and oxygen isotopic characteristics of precipitation in coastal areas of Japan determined by observations for 23 years at Akita and for 1–2 years at other several localities
Japanese meteoric water precipitation hydrogen isotopic ratio oxygen isotopic ratio d-valu
2017/4/11
The hydrogen and oxygen isotopic characteristics of precipitation in coastal areas of Japan were explained on the basis
of a long period (23 years) observation of hydrogen and oxygen isotopic ratios ...
Contribution of Asian outflow to atmospheric concentrations of sulfate and trace elements in aerosols during winter in Japan
Asian outflow nonsea-salt sulfate trace elements sulfur isotopes coal combustion
2017/4/11
The atmospheric concentrations of nonsea-salt (nss) SO4
2– and trace elements (As, Cd, Co, Cr, Cu, Mn, Ni, Pb, Sb, Se,
V, and Zn) were measured for aerosol samples collected concurrently at ten site...
Carbon isotope variations in diploptene for methane hydrate dissociation during the last glacial episode in the Japan Sea/East Sea
diploptene methane hydrate dissociation carbon isotope glacial–interglacial sea-level changes
2017/4/11
Two piston cores (06GHSA P1 and 06GHSA P6) taken from the Ulleung Basin of the Japan Sea/East Sea were examined
for the presence of an organic compound, diploptene (hopanoid 17α(H),21β(H)-hop-22(29)-...
Characteristics of hydrogen and oxygen stable isotope ratios in precipitation collected in a snowfall region, Aomori Prefecture, Japan
hydrogen isotope ratio oxygen isotope ratio d-excess seasonal variation Aomori Prefecture
2017/4/10
Characteristics of δ2
H and δ18O in precipitation samples collected at 16- to 17-d intervals at three stations at the
northern end of Honshu Island, Japan, were investigated. Rokkasho and Ajigasawa ...
Elemental transport upon hydration of basic schists during regional metamorphism: Geochemical evidence from the Sanbagawa metamorphic belt, Japan
mass transfer fluid flow hydration metamorphism Sanbagawa belt
2017/4/10
Trace element and Sr–Nd–Pb isotopic compositions of basic schists in the Cretaceous Sanbagawa metamorphic belt, a
typical regional metamorphic belt in the circum-Pacific orogeny, have been investigat...
Geochemical, stable isotope, and numerical modeling studies of sake and groundwater for identification of the location of sake production: A case study from Hakusan City, Japan
sake oxygen isotope Ishikawa groundwater modeling
2017/4/11
Understanding the source and chemical characteristics of groundwater used for sake production is an important strategy
for the quality management of sake brewing. Oxygen isotope ratios (δ18O) of 96 s...
Calcium-sulfate rich water in landslide area of Tateyama Caldera, northern central Japan
water geochemistry Tateyama caldera Ca–SO4 type water landslide sulfur isotopes
2017/4/11
Chemistry of surface waters from the Tateyama caldera known as a site of frequent landslides in northern central Japan
was investigated to obtain the relationship between their geochemical characteri...
Historical changes in soil acidification inferred from the dendrochemistry of a Tateyama cedar at Bijodaira, Mt. Tateyama, Japan
tree ring soil acidification dendrochemistry Bijodaira Mt. Tateyama
2017/4/11
Increased emission of acidic pollutants on the Asian continent and long-distance transport of such pollutants have
caused soil acidification in eastern Asia. In Japan, Hokuriku district experiences h...
Lithium–strontium isotope and heavy metal content of fluid inclusions and origin of ore-forming fluid responsible for tungsten mineralization at Takatori mine, Japan
fluid inclusion lithium isotope initial 87Sr/86Sr ratio Takatori mine tungsten mineralization
2017/4/11
Ore-forming fluid trapped in vein quartz as fluid inclusions from tungsten ore at the Takatori mine was extracted by a
crush-leach technique. The trace metal content and isotopic composition (δ7Li an...
Spatial distribution of 87Sr/86Sr ratios of stream sediments in Shikoku Island and the Kii Peninsula, Southwest Japan
geochemical map stream sediment
2017/4/11
Geochemical mapping of 87Sr/86Sr ratios in Shikoku Island and the Kii Peninsula of Southwest Japan was performed
using 233 samples of stream sediments (<180 μm). The spatial distribution of 87Sr/86Sr...
Temporal variation of 134Cs and 137Cs activities in surface water at stations along the coastline near the Fukushima Dai-ichi Nuclear Power Plant accident site, Japan
radiocaesium ocean coast Fukushima geochemistry
2017/4/11
We present our April to December 2011 observations of 134Cs and 137Cs activities in surface water at Hasaki, a coastal
station 180 km south of the Fukushima Dai-ichi Nuclear Power Plant (FNPP1) accid...
Sulfur isotopic study of ore minerals and altered host rocks of Neogene–Quaternary overprinting hydrothermal systems in the Toyoha–Muine area, southwest Hokkaido, Japan
sulfur isotopes overprinting hydrothermal systems ore minerals alteration Toyoha–Muine
2017/4/11
Sulfur isotopes in vein sulfides (galena, sphalerite, and pyrite) and pyrite sulfur derived from overprinting hydrothermal
systems in the altered volcanic host rocks of the Toyoha–Muine area are dete...