搜索结果: 1-15 共查到“地质学 Pacific”相关记录21条 . 查询时间(0.109 秒)
EAGE Asia Pacific is pleased to announce a Breakfast Talk featuring Prof. Dr. Tariq Alkhalifah, King Abdullah University of Science and Technology (KAUST) and Dr. Troy Thompson, DownUnder GeoSolutions...
The 6th Asia-Pacific Workshop on Laser-Ablation and Micro-analyses
isotopic analyses micro-geochemical
2016/7/28
The State Key Laboratory of Geological Processes and
Mineral Resources (GPMR), China University of Geosciences
(Wuhan) will be sponsoring a two-day workshop devoted to
promoting the application and...
Major and trace element compositions and resource potential of ferromanganese crust at Takuyo Daigo Seamount, northwestern Pacific Ocean
Fe-Mn crust Takuyo Daigo Seamount northwestern Pacific Ocean resource potential evaluation
2017/4/10
We report major element and trace element compositions of ferromanganese crusts (Fe-Mn crusts) on Takuyo Daigo
Seamount, northwestern Pacific Ocean. Highly enriched elements in these crusts, such as ...
Geological factors responsible for REY-rich mud in the western North Pacific Ocean: Implications from mineralogy and grain size distributions
REY-rich mud biogenic calcium phosphate phillipsite pelagic sediment grain size distribution
2017/4/10
Seven piston cores were collected from the seafloor ~250 km south of Minamitorishima Island in the western North
Pacific Ocean during the cruise KR13-02 of R/V Kairei; in some portions of cores PC04 ...
Acoustic characterization of pelagic sediments using sub-bottom profiler data: Implications for the distribution of REY-rich mud in the Minamitorishima EEZ, western Pacific
REY-rich mud Minamitorishima EEZ sub-bottom profiler sediment classification western Pacific
2017/4/10
Sub-bottom profiling was conducted in the Japanese Exclusive Economic Zone (EEZ) around Minamitorishima Island,
western Pacific Ocean, to investigate the features and distribution of mud rich in rare...
Re–Os isotope geochemistry in the surface layers of ferromanganese crusts from the Takuyo Daigo Seamount, northwestern Pacific Ocean
ferromanganese crust Re and Os isotopes geochemistry Takuyo Daigo Seamount northwestern Pacific Ocean
2017/4/10
Os isotope compositions in ferromanganese crusts (Fe–Mn crusts) have been used for the dating of model ages from
present to the Late Cretaceous. This dating method assumes that the Fe–Mn crusts prese...
Neodymium isotopic composition and concentration in the Southwest Pacific Ocean
Southwest Pacific Nd isotopic composition Antarctic Intermediate Water (AAIW) Upper and Lower Circumpolar Deep Waters (UCDW and LCDW) GEOTRACES
2017/4/11
We report two vertical profiles of the concentration and isotopic composition of neodymium (Nd) in seawater samples
collected at 20°S and 30°S along a longitude of 170°W in the Southwest Pacific Ocea...
Origin of hotspots in the South Pacific: Recent advances in seismological and geochemical models
otspot South Pacific seismic tomography geochemical heterogeneities HIMU thermochemical superplume
2017/4/11
In this study, we review recent seismological and geochemical studies of the hotspots in the South Pacific superswell.
Extensive studies on global-scale seismic tomography have revealed the presence ...
Distribution of Pu isotopes in marine sediments in the Pacific 30 km off Fukushima after the Fukushima Daiichi nuclear power plant accident
Fukushima plutonium isotopes western North Pacific marine sediments SF-ICP-MS
2017/4/11
The Fukushima Dai-ichi Nuclear Power Plant (DNPP) accident has caused serious contamination of the marine environment
from atmospheric fallout deposition and the direct discharges of highly radioacti...
Dispersion of artificial caesium-134 and -137 in the western North Pacific one month after the Fukushima accident
Fukushima caesium western North Pacific zooplankton suspended solids
2017/4/11
In March 2011, an accident at the Fukushima Daiichi nuclear power plant (FNPP-AC) was caused by the Tohoku
earthquake and tsunami. Here we show the distribution of artificial caesium-134 and -137 (13...
TRACE ELEMENT DETERMINATIONS COMPARED WITH X-RAY DIFFRACTION RESULTS OF BROWN CLAY IN THE CENTRAL PACIFIC
BROWN CLAY X-RAY DIFFRACTION THE CENTRAL PACIFIC
2011/11/8
Prior to DSDP Leg 17, no sites drilled in the central Pacific had continuously cored a thick section of pelagic brown clay. On Leg 6 several sites were drilled through brown clay, but poor recovery du...
Helium isotopes of seawater in the Philippine Sea and the western North Pacific
3He/4He ratios abyssal current Philippine Sea North Pacific seawater
2017/8/9
We measured helium isotopic ratios of 84 seawater samples from various depths collected in the western North Pacific Ocean and the western Philippine Sea. The 3He/4He ratios varied significantly from ...
High sensitivity measurements of nitrogen isotopic ratios in coral skeletons from Palau, western Pacific: Temporal resolution and seasonal variation of nitrogen sources
coral skeleton δ15N value δ18O value δ13C value seasonal variation
2017/8/10
By using a step-wise heating method in conjunction with static vacuum mass spectrometry, we have measured at high temporal resolution (one month) the nitrogen isotopic ratio of a coral skeletal sample...
Experiments linking nitrogenase gene expression to nitrogen fixation in the North Pacific subtropical gyre
Experiments linking nitrogenase gene expression nitrogen fixation North Pacific subtropical gyre
2014/4/22
We examined diazotroph activity in controlled experiments containing natural populations of nitrogen (N2)- fixing microbes collected offshore from Kane’ohe Bay, Hawai’i, and from Station ALO...
Scientists Catch Underwater Volcanic Eruption "In Action" in Pacific Ocean Depths（图）
Underwater Volcanic Eruption Pacific Ocean volcanic
2006/11/28
November 27, 2006，Nearly 2,500 meters beneath the surface of the Pacific Ocean, magma erupted onto the sea floor last January in a new episode of sea-floor spreading, an occurrence never before caught...