Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Minoru Ikehara"'
Autor:
Tomoyuki Hori, Motoo Ito, Steven D'Hondt, Fumio Inagaki, Yuki Morono, Tatsuhiko Hoshino, Takeshi Terada, Minoru Ikehara
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
Nature Communications
Nature Communications
Sparse microbial populations persist from seafloor to basement in the slowly accumulating oxic sediment of the oligotrophic South Pacific Gyre (SPG). The physiological status of these communities, including their substrate metabolism, is previously u
Publikováno v:
Scientific Reports
Microfossils are a powerful tool in earth sciences, and they have been widely used for the determination of geological age and in paleoenvironmental studies. However, the identification of fossil species requires considerable time and labor by expert
Autor:
Toshitsugu Yamazaki, Takuya Sagawa, Tsuyoshi Ishikawa, Yusuke Yokoyama, Kaoru Kubota, Minoru Ikehara
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-11 (2019)
Scientific Reports
Scientific Reports
The ocean may have played a central role in the atmospheric pCO2 rise during the last deglaciation. However, evidence on where carbon was exchanged between the ocean and the atmosphere in this period is still lacking, hampering our understanding of g
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
Scientific Reports
Scientific Reports
Multiple transient global warming events occurred during the early Palaeogene. Although these events, called hyperthermals, have been reported from around the globe, geologic records for the Indian Ocean are limited. In addition, the recovery process
Autor:
Katsuto Uehara, Yusuke Yokoyama, Takeshige Ishiwa, Minoru Ikehara, Yosuke Miyairi, Stephen P Obrochta, Jun'ichi Okuno
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-8 (2019)
Scientific Reports
Scientific Reports
Further understanding of past climate requires a robust estimate of global ice volume fluctuations that in turn rely on accurate global sea-level reconstructions. An advantage of Marine Isotope Stage 2 (MIS 2) is the availability of suitable material
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-8 (2019)
Scientific Reports
Scientific Reports
The mechanisms driving the variations in the centennial-scale East Asian summer monsoon (EASM) remain unclear. Here, we use the δ18O records from adult ostracode shells to reconstruct the EASM variations over the last 3 kyrs in southwestern Japan. A
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
Scientific Reports
Scientific Reports
Denitrification in the Arabian Sea is closely related to the monsoon-induced upwelling and subsequent phytoplankton production in the surface water. The δ15N values of bulk sediments collected at Site U1456 of the International Ocean Discovery Progr
Autor:
Yasuhiro Kato, Atsushi Matsuoka, Koichiro Fujinaga, Kazutaka Yasukawa, Minoru Ikehara, Honami Sato, Daisuke Yamashita, Tetsuji Onoue
Publikováno v:
Scientific Reports
Extinctions within major pelagic groups (e.g., radiolarians and conodonts) occurred in a stepwise fashion during the last 15 Myr of the Triassic. Although a marked decline in the diversity of pelagic faunas began at the end of the middle Norian, the
Autor:
Osamu Seki, Ellen E Martin, Chandranath Basak, Jonaotaro Onodera, Kimitaka Kawamura, Tatsuhiko Sakamoto, Keiji Horikawa, Minoru Ikehara, Saburo Sakai
Publikováno v:
Nature Communications
Warming of high northern latitudes in the Pliocene (5.33–2.58 Myr ago) has been linked to the closure of the Central American Seaway and intensification of North Atlantic Deep Water. Subsequent cooling in the late Pliocene may be related to the eff