Results 11 to 20 of about 220 (93)

Secular Variations in Provenance of Sedimentary Components in the Western North Pacific Ocean Constrained by Sr Isotopic Features of Deep‐Sea Sediments

Geochemistry, Geophysics, Geosystems, 2022
Deep‐sea sediments around Minamitorishima Island in the western North Pacific Ocean record the depositional environment in the central to western North Pacific since the late Cretaceous.
Erika Tanaka, Kazutaka Yasukawa, Kentaro Nakamura, Junichiro Ohta, Takashi Miyazaki, Bogdan Stefanov Vaglarov, Shiki Machida, Koichiro Fujinaga, Hikaru Iwamori, Yasuhiro Kato   +9 more
doaj   +2 more sources

Acoustic twilight: A year‐long seafloor monitoring unveils phenological patterns in the abyssal soundscape

Limnology and Oceanography Letters
Despite the perpetual darkness of the deep sea, contrasting the sunlit epipelagic waters, many deep‐sea organisms exhibit rhythmic activities. To discern environmental cues that may serve as entrainment signals for deep‐sea organisms, this study ...
Tzu‐Hao Lin, Shinsuke Kawagucci
doaj   +2 more sources

Geology and geochemistry of ferromanganese nodules in the Japanese Exclusive Economic Zone around Minamitorishima Island

Geochemical Journal, 2016
Shiki Machida, Koichiro Fujinaga, Kentaro Nakamura   +2 more
exaly   +3 more sources

Seamount larval dispersal networks: A potential strategy for conserving ecological connectivity from deep-sea mining. [PDF]

Ecol Appl
Abstract Seamounts are unique habitats in the deep sea facing anthropogenic stressors, including future deep‐sea mining. To conserve patchy marine habitats such as seamounts, it is critical to design conservation area networks that maintain connectivity by larval dispersal. This study conducted biophysical modeling to quantify larval dispersal among 18
Saito N, Kise H, Washburn TW, Ikeuchi E, Iguchi A, Kamoshida H, Suzuki A.   +6 more
europepmc   +2 more sources

Distribution of CO₂ in Western Pacific, Studied Using Isotope Data Made in Taiwan, OCO-2 Satellite Retrievals, and CarbonTracker Products. [PDF]

Earth Space Sci, 2018
Abstract To assess sources and processes that affect the variability of CO2 at local to regional scales, we have analyzed the mixing ratio [CO2] and stable isotopic compositions (δ13C and δ18O) of atmospheric CO2 for three years (2014–2016) in urban and sub‐urban areas in Taipei, Taiwan. The data are compared with those from some background sites, viz.,
Laskar AH, Lin LC, Jiang X, Liang MC.
europepmc   +2 more sources

Development of a Continuous Measurement System for Atmospheric O₂/N₂ Ratio Using a Paramagnetic Analyzer and Its Application in Minamitorishima Island, Japan

Scientific Online Letters on the Atmosphere, 2017
Shigeyuki Ishidoya, Shohei Murayama, Nobuyuki Aoki   +2 more
exaly   +3 more sources

Japanese Growth Strategy through Development of Rare-earth Elements and Yttrium (REY)-rich Mud Deposits around the Minamitorishima Island

Journal of the Japan Institute of Marine Engineering, 2015
Yasuhiro Kato
exaly   +3 more sources

Validation report for the CAMS greenhouse gas global reanalysis for the period 2003 - 2010 [PDF]

, 2022
Based on satellite and in-situ observations, the CAMS service produces daily analysis, forecasts as well as reanalyses. As one of the service products, CAMS is producing global-scale reanalyses, one for the greenhouse gases, and one for the reactive ...
El-Yazidi, A., Eskes, H.J., Langerock, B., Ramonet, M., Warneke, T., Yala, K.   +5 more
core   +1 more source

High‐Dimensional Chemostratigraphy of Pelagic Clay in the Western North Pacific Ocean Revealed via an Unsupervised Clustering Approach

Paleoceanography and Paleoclimatology, Volume 38, Issue 7, July 2023., 2023
Abstract Pelagic clay constitutes massive and apparently uniform lithology that limits the stratigraphic correlation between neighboring sediment core samples. Recent studies on the pelagic clay in the western North Pacific Ocean demonstrated that the bulk chemical composition of sediments constitutes multielemental chemostratigraphy, deducing the ...
Kazutaka Yasukawa, Erika Tanaka, Takashi Miyazaki, Bogdan S. Vaglarov, Qing Chang, Kentaro Nakamura, Junichiro Ohta, Koichiro Fujinaga, Hikaru Iwamori, Yasuhiro Kato   +9 more
wiley   +1 more source

Rare‐Earth Elements in Deep‐Sea Sediments in the South Pacific Gyre: Source Materials and Resource Potentials

Geochemistry, Geophysics, Geosystems, Volume 24, Issue 3, March 2023., 2023
Abstract Deep‐sea sediments enriched in rare‐earth elements and yttrium (REY) plus scandium (Sc), termed “REY‐rich mud,” have attracted attention as a possible resource for these critical industrial elements. Examples have been reported from the western North Pacific, central Pacific, low‐latitude South Pacific, and eastern South Pacific.
Erika Tanaka, Kazuhide Mimura, Kentaro Nakamura, Junichiro Ohta, Kazutaka Yasukawa, Yasuhiro Kato   +5 more
wiley   +1 more source