Osamu Seki YOU? Author Swipe

Last 10y

Author Correction: Antarctic ice-shelf collapse in Holocene driven by meltwater release feedbacks Open

Yûsuke Suganuma, Takuya Itaki, Yuki Haneda, Kazuya Kusahara, Takashi Obase , et al. · 2025

Antarctic ice-shelf collapse in Holocene driven by meltwater release feedbacks Open

Yûsuke Suganuma, Takuya Itaki, Yuki Haneda, Kazuya Kusahara, Takashi Obase , et al. · 2025

Circumpolar Deep Water inflow onto Antarctica’s continental shelves is a key driver of accelerated Antarctic Ice Sheet mass loss, both presently and during the last deglaciation. However, the mechanisms driving enhanced inflow and the resu…

Supplementary material to "New isoprenoid GDGT index as a water mass and temperature proxy in the Southern Ocean" Open

Haruo Ishii, Osamu Seki, Masanobu Yamamoto, Bella Duncan · 2025

New isoprenoid GDGT index as a water mass and temperature proxy in the Southern Ocean Open

Haruo Ishii, Osamu Seki, Masanobu Yamamoto, Bella Duncan · 2025

The Southern Ocean plays a crucial role in the global carbon cycle, ocean heat transport, and Antarctic ice dynamics. Investigating past variability in the Southern Ocean, including temperature and water masses distribution, can improve un…

Data report: gas hydrate assessment in Baffin Bay at IODP Expedition 400 drill sites Open

F. Naim, Ann E. Cook, Paul Cornils Knutz, Anne Jennings, Laurel B. Childress , et al. · 2025

International audience

Acidity-driven gas-particle partitioning of nitrate regulates its transport to Arctic through the industrial era Open

Yoshinori Iizuka, Mai Matsumoto, Kaoru Kawakami, Mahiro Sasage, Sakiko Ishino , et al. · 2025

Site U1608 Open

Paul Cornils Knutz, Anne Jennings, Laurel B. Childress, Raquel Bryant, S.K. Cargill , et al. · 2025

International audience

Expedition 400 summary Open

Paul Cornils Knutz, Anne Jennings, Laurel B. Childress, Raquel Bryant, S.K. Cargill , et al. · 2025

International audience

Site U1603 Open

Paul Cornils Knutz, Anne Jennings, Laurel B. Childress, Raquel Bryant, S.K. Cargill , et al. · 2025

International audience

Expedition 400 methods Open

Paul Cornils Knutz, Anne Jennings, Laurel B. Childress, Raquel Bryant, S.K. Cargill , et al. · 2025

International audience

Site U1607 Open

Paul Cornils Knutz, Anne Jennings, Laurel B. Childress, Raquel Bryant, S.K. Cargill , et al. · 2025

Site U1605 Open

Paul Cornils Knutz, Anne Jennings, Laurel B. Childress, Raquel Bryant, S.K. Cargill , et al. · 2025

International audience

Site U1606 Open

Paul Cornils Knutz, Anne Jennings, Laurel B. Childress, Raquel Bryant, S.K. Cargill , et al. · 2025

International audience

Site U1604 Open

Paul Cornils Knutz, Anne Jennings, Laurel B. Childress, Raquel Bryant, S.K. Cargill , et al. · 2025

International audience

Seasonal Sea Surface Temperature Variations at the Northern Limit of the Kuroshio Current in Marine Isotope Stage 20–18 Open

Hiroto Kajita, Yûsuke Suganuma, Yuki Haneda, Makoto Okada, Masanobu Yamamoto , et al. · 2025

This study presents a high time‐resolution alkenone unsaturation ratios (U K' 37 ) in the Chiba composite section, a marine sedimentary sequence formed in the Kazusa forearc basin in the northwestern Pacific under the influence of the Kuro…

Survival strategies of Antarctic vegetation during extensive glacial expansion across the Oligocene/Miocene Transition Open

Bella Duncan, Robert M. McKay, Richard Levy, Joseph G. Prebble, T. Naish , et al. · 2025

Antarctica’s terrestrial ecosystems are at risk from a rapidly changing climate. Investigating how Antarctica’s vascular plants responded to major climatic variations in the geological past, especially under atmospheric CO2 values similar …

Impact of elevated CO2 on the δ13C of n-alkane biomarkers Open

Bridget Warren, Osamu Seki, Sarah E. Greene, Kweku Afrifa Yamoah, Yvette Eley , et al. · 2024

Atmospheric particulates over the northwestern Pacific during the late Holocene: Volcanism, dust, and human perturbation Open

Samuel K. Marx, James Hooper, Tomohisa Irino, Nicola Stromsoe, Krystyna M. Saunders , et al. · 2024

Mineral aerosols form a key component of Earth’s dynamic biogeochemical systems, yet their composition and mass are variable in time. We reconstruct patterns in mineral aerosol flux from East Asia, the second largest global dust source, in…

Spatially variable response of Antarctica's ice sheets to orbital forcing during the Pliocene Open

Molly O. Patterson, Christiana Destry Rosenberg, Osamu Seki, Masanobu Yamamoto, Oscar E Romero , et al. · 2024

Variations in Earth’s orbit pace global ice-volume/sea-level changes, but the variability in the response for different sectors of the Antarctic Ice Sheet (AIS) to orbitally-forced climate change remains unclear. We present geological reco…

Expedition 400 Preliminary Report: NW Greenland Glaciated Margin Open

Paul Cornils Knutz, Anne Jennings, Laurel B. Childress, Raquel Bryant, Sami K. Cargill , et al. · 2024

International audience

Radiolarian assemblages related to the ocean–ice interaction around the East Antarctic coast Open

Mutsumi Iizuka, Takuya Itaki, Osamu Seki, Ryosuke Makabe, Motoha Ojima , et al. · 2024

The Southern Ocean plays a central role in Earth's climate, ecology, and biogeochemical cycles. Therefore, understanding long-term changes in Southern Ocean water masses in the geologic past is essential for assessing the role of the South…

Toward a Cenozoic history of atmospheric CO <sub>2</sub> Open

Bärbel Hönisch, Dana L. Royer, Daniel O. Breecker, P. J. Polissar, Gabriel J. Bowen , et al. · 2023

The geological record encodes the relationship between climate and atmospheric carbon dioxide (CO 2 ) over long and short timescales, as well as potential drivers of evolutionary transitions. However, reconstructing CO 2 beyond direct meas…

Amplified surface warming in the south-west Pacific during the mid-Pliocene (3.3–3.0 Ma) and future implications Open

Georgia Grant, Jonny Williams, Sebastian Naeher, Osamu Seki, Erin L. McClymont , et al. · 2023

Based on Nationally Determined Contributions concurrent with Shared Socioeconomic Pathways (SSPs) 2-4.5, the IPCC predicts global warming of 2.1–3.5 ∘C (very likely range 10–90th percentile) by 2100 CE. However, global average temperature …

Climate-controlled submarine landslides on the Antarctic continental margin Open

Jenny A. Gales, Robert M. McKay, Laura De Santis, Michele Rebesco, Jan Sverre Laberg , et al. · 2023

Antarctica’s continental margins pose an unknown submarine landslide-generated tsunami risk to Southern Hemisphere populations and infrastructure. Understanding the factors driving slope failure is essential to assessing future geohazards.…

Multiple episodes of ice loss from the Wilkes Subglacial Basin during the Last Interglacial Open

Mutsumi Iizuka, Osamu Seki, David J. Wilson, Yûsuke Suganuma, Keiji Horikawa , et al. · 2023

The Last Interglacial (LIG: 130,000–115,000 years ago) was a period of warmer global mean temperatures and higher and more variable sea levels than the Holocene (11,700–0 years ago). Therefore, a better understanding of Antarctic ice-sheet…

Comment on egusphere-2023-108 Open

Georgia Grant, Jonny Williams, Sebastian Naeher, Osamu Seki, Erin L. McClymont , et al. · 2023

Abstract. Based on Nationally-Determined Contributions concurrent with Shared Socio-economic Pathway (SSP) 2–4.5, the IPCC predicts global warming between 2.1–3.5°C (very likely range 10th–90th percentile) by 2100 AD. Howe…

Influence of Earlier Snowmelt on the Seedling Growth of Six Subboreal Tree Species in the Spring Open

Erica Marumo, Miki Ueda, Osamu Seki, Kentaro Takagi, Kobayashi Makoto · 2023

Climate warming is advancing snowmelt timing in the spring at high latitudes. To predict tree growth in subboreal forests under warmer climates based on mechanistic understanding, it is important to assess how advancing snowmelt influences…

Amplified surface warming in the Southwest Pacific during the mid-Pliocene (3.3–3.0 Ma) and future implications Open

Georgia Grant, Jonny Williams, Sebastian Naeher, Osamu Seki, Erin L. McClymont , et al. · 2023

Based on Nationally-Determined Contributions concurrent with Shared Socio-economic Pathway (SSP) 2–4.5, the IPCC predicts global warming between 2.1–3.5°C (very likely range 10th–90th percentile) by 2100 AD. However, global average tempera…

Ancient marine sediment DNA reveals diatom transition in Antarctica Open

Linda Armbrecht, Michael E Weber, Maureen E. Raymo, Victoria L. Peck, Trevor Williams , et al. · 2022

Latitudinal Variance in the Drivers and Pacing of Warmth During Mid‐Pleistocene MIS 31 in the Antarctic Zone of the Southern Ocean Open

Jonathan Warnock, Brendan T. Reilly, Maureen E. Raymo, Michael E Weber, Victoria L. Peck , et al. · 2022

Early Pleistocene Marine Isotope Stage (MIS)‐31 (1.081–1.062 Ma) is a unique interval of extreme global warming, including evidence of a West Antarctic Ice Sheet (WAIS) collapse. Here we present a new 1,000‐year resolution, spanning 1.110–…

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