Obrochta Stephen

Affiliation and department：
Job title： Professor
Homepage URL (2)： http://www.gipc.akita-u.ac.jp/~geoinformatics/index.html , http://www.gipc.akita-u.ac.jp/~geoinformatics/index_e.html

Research field (1)： Other

Research theme for competitive and other funds (8)：

2023 - 2028 Study to investigate the Holocene Temperature Conundrum
2024 - 2027 グレートバリアーリーフ形成時期の古環境復元
2023 - 2026 Timing and magnitude of the Scandinavian Ice Sheet contribution to post-glacial sea level rise
2020 - 2023 A study on Longterm Environmental changes and Wethering
2017 - 2022 過去の大規模な気候変動における氷床・海洋・大気の相互作用の解明

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Papers (55)：

Karin Nemoto, Yusuke Yokoyama, Stephen P. Obrochta, Yosuke Miyairi, Osamu Fujiwara, Shinya Yamamoto, Atsunori Nakamura, Aurélia Hubert-Ferrari, Vanessa Heyvaert, Marc De Batist. A Lake at the Mt. Fuji (Lake Motosu) Recording Prolonged Negative Arctic Oscillation as Reduction of Aeolian Dust Due To Westerly Pathways During the Holocene. Paleoceanography and Paleoclimatology. 2024. 39. 9
Kosuke Ota, Yusuke Yokoyama, Yosuke Miyairi, Stephen P. Obrochta, Shinya Yamamoto, A. Hubert-Ferrari, V.M.A. Heyvaert, Marc De Batist, Osamu Fujiwara. Development of an automated extraction and radiocarbon dating method for fossil pollen deposited in Lake Motosu, Japan. Quaternary Science Advances. 2024. 100207-100207
Aulia Agus Patria, Renaldi Suhendra, Ferian Anggara, Andrea Agangi, Stephen P. Obrochta, Iwan Setiawan. Association and textural-compositional evolution of pyrite-organic matter in coals of the Tarakan, Barito, and Pasir Basins, Kalimantan, Indonesia. International Journal of Coal Geology. 2024. 282
Karin Nemoto, Yusuke Yokoyama, Satoshi Horiike, Stephen P. Obrochta, Yosuke Miyairi. Meridional migrations of the intertropical convergence zone during the last deglaciation in the Timor Sea detected by extensive radiocarbon dating. Radiocarbon. 2024
Rebecca L. Parker, Gavin L. Foster, Marcus Gutjahr, Paul A. Wilson, Stephen P. Obrochta, Nathalie Fagel, Matthew J. Cooper, Agnes Michalik, James A. Milton, Ian Bailey. The history of ice-sheet retreat on North America during Termination 5: Implications for the origin of the sea-level highstand during interglacial stage 11. Earth and Planetary Science Letters. 2023. 618

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MISC (3)：

藤原治, Obrochta Stephen, 横山祐典, 宮入陽介, 常松佳恵. Mt. Fuji Holocene eruption history reconstructed from coring survey in Lake Motosu, Fuji Five Lakes. GSJ地質ニュース = GSJ chishitsu news. 2019. 8. 3. 66-69
Ishiwa Takeshige, Bourget Julian, Matsuzaki Hiroyuki, Yokoyama Yusuke, Ikehara Minoru, Uehara Katsuto, Miyairi Yosuke, Suzuki Atsushi, Stephen Obrochta, Ikehara Ken, et al. Reconstruction of paleoenvironment around the Last Glacial Maximum in Bonaparte Gulf. Abstracts of Annual Meeting of the Geochemical Society of Japan. 2013. 60. 0. 11-11
Ishiwa Takeshige, Mtsuzaki Hiroyuki, Yokoyama Yusuke, Miyairi Yosuke, Suzuki Atsushi, Ikehara Minoru, Obrochta Stephen, Ikehara Ken, kimoto Katsunori, Bourget Julien. Reconstruction of the sedimentary environment using sea sediments in the northwest Australia. Abstracts of Annual Meeting of the Geochemical Society of Japan. 2012. 59. 0. 190-190

Lectures and oral presentations (73)：

Towards quantitative reconstruction of past Kuroshio variability: Initial results of Cruise KS-22-4
(JpGU 2024 2024)
Marine and earth science surveys in the Southern part of Okinawa Trough: Hakuho-maru KH-23-11 cruise preliminary reports
(2024)
Meridional migrations of the Intertropical convergence Zone during the last deglaciation in the Timor Sea detected by extensive radiocarbon dating
(2024)
Characteristics of Deposits in the Southern Okinawa Trough: Preliminary Report of Cruise KH-23-11
(JpGU 2024 2024)
Innovative advances in radiocarbon calibration methods to improve age models of Southern Ocean cores
(JpGU 2023 2024)

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Works (5)：

CoreAlign
Stephen Obrochta, Jan Morén 2023 -
Undatable
Stephen Obrochta, Bryan Lougheed 2019 -
depthcorrect
Stephen Obrochta 2017 -
MatCal
Bryan Lougheed, Stephen Obrochta 2016 -
g2n
Stephen Obrochta, Jan Morén 2014 -

Education (3)：

2004 - 2008 Duke University Nicholas School Division of Earth and Ocean Science
2001 - 2004 University of South Florida College of Marine Science Geological Oceanography
1995 - 1997 Eckerd College Marine Science Department Marine Geology

Professional career (3)：

PhD (Duke University)
MS (University of South Florida)
BS (Eckerd College)

Work history (6)：

2020/11 - 現在 Akita University Graduate School of International Resource Science Professor
2014/12 - 2020/11 Akita University Graduate School of International Resource Science Associate Professor
2014/10 - 2014/12 Tokyo University Atmosphere and Ocean Research Institute JSPS Postdoctoral Foreign Researcher (Pathways)
2010/11 - 2014/09 Tokyo University Atmosphere and Ocean Research Institute Post doc
2010/04 - 2010/11 Tokyo University Atmosphere and Ocean Research Institute JSPS Postdoctoral Foreign Researcher

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Committee career (3)：

2024/04 - 現在 Japan Association for Quaternary Research General Affairs Committee
2022/04 - 2024/04 Japan Association for Quaternary Research Section 1 (Paleoclimate and Marine Processes) Councilor
2019/08 - 2024/04 Japan Association for Quaternary Research Public Relations Committee

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