Hirofumi Asahi

1.1k total citations
36 papers, 712 citations indexed

About

Hirofumi Asahi is a scholar working on Atmospheric Science, Ecology and Oceanography. According to data from OpenAlex, Hirofumi Asahi has authored 36 papers receiving a total of 712 indexed citations (citations by other indexed papers that have themselves been cited), including 31 papers in Atmospheric Science, 18 papers in Ecology and 16 papers in Oceanography. Recurrent topics in Hirofumi Asahi's work include Geology and Paleoclimatology Research (31 papers), Isotope Analysis in Ecology (17 papers) and Methane Hydrates and Related Phenomena (14 papers). Hirofumi Asahi is often cited by papers focused on Geology and Paleoclimatology Research (31 papers), Isotope Analysis in Ecology (17 papers) and Methane Hydrates and Related Phenomena (14 papers). Hirofumi Asahi collaborates with scholars based in Japan, South Korea and United States. Hirofumi Asahi's co-authors include Yusuke Okazaki, Kozo Takahashi, Naomi Harada, Anne Mouchet, M. O. Chikamoto, Laurie Menviel, Axel Timmermann, Ayako Abe‐Ouchi, Takuya Sagawa and Ana Christina Ravelo and has published in prestigious journals such as Science, Nature Communications and Geophysical Research Letters.

In The Last Decade

Hirofumi Asahi

36 papers receiving 704 citations

Peers

Hirofumi Asahi

ECOLO

OCEAN

Lars Max Germany

Sandrine Solignac Canada

Maryse Henry Canada

Takuya Sagawa Japan

Natalia Vázquez Riveiros France

Allison W Jacobel United States

Cornelia I. Blaga Netherlands

Haowen Dang China

Pai‐Sen Yu Taiwan

Martina Kunz‐Pirrung Germany

Lars Max Germany

Hirofumi Asahi

664 ×1.0

397 ×1.0

306 ×0.9

ECOLO

178 ×0.8

OCEAN

94 ×1.1

Citations per year, relative to Hirofumi Asahi Hirofumi Asahi (= 1×) peers Lars Max

Countries citing papers authored by Hirofumi Asahi

Since Specialization

Citations

This map shows the geographic impact of Hirofumi Asahi's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Hirofumi Asahi with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hirofumi Asahi more than expected).

Fields of papers citing papers by Hirofumi Asahi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hirofumi Asahi. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Hirofumi Asahi. The network helps show where Hirofumi Asahi may publish in the future.

Co-authorship network of co-authors of Hirofumi Asahi

This figure shows the co-authorship network connecting the top 25 collaborators of Hirofumi Asahi. A scholar is included among the top collaborators of Hirofumi Asahi based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Hirofumi Asahi. Hirofumi Asahi is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Tanikawa, Wataru, Takehiro Hirose, Keishi Okazaki, et al.. (2025). Effect of particle characteristics on granular friction evaluated by dual-slip-plane friction tests. Progress in Earth and Planetary Science. 12(1). 1 indexed citations

Takata, Hiroyuki, Boo‐Keun Khim, Kiseong Hyeong, et al.. (2024). Ballasting of Particulate Organic Matter at the Ninetyeast Ridge During the Mid‐Brunhes Dissolution Interval and Long‐Term Implications for Zonal Change in Tropical Indian Oceanography. Paleoceanography and Paleoclimatology. 39(1). 1 indexed citations

Takata, Hiroyuki, Minoru Ikehara, Koji Seto, et al.. (2024). Climate-induced shift of deep-sea benthic foraminifera at the onset of the mid-Brunhes dissolution interval in the northeast tropical Indian Ocean. Progress in Earth and Planetary Science. 11(1). 1 indexed citations

Kender, Sev, Ana Christina Ravelo, George E. A. Swann, et al.. (2018). Closure of the Bering Strait caused Mid-Pleistocene Transition cooling. Nature Communications. 9(1). 5386–5386. 45 indexed citations

Asahi, Hirofumi, Kozo Takahashi, Yusuke Okazaki, & Jonaotaro Onodera. (2018). Paleoceanography of the Bering Sea advanced by IODP Expedition 323:. The Journal of the Geological Society of Japan. 124(1). 17–34. 1 indexed citations

Katsuki, Kota, et al.. (2017). Multi-centennial-scale changes in East Asian typhoon frequency during the mid-Holocene. Palaeogeography Palaeoclimatology Palaeoecology. 476. 140–146. 18 indexed citations

Ujiié, Yurika, Hirofumi Asahi, Takuya Sagawa, & Franck Bassinot. (2016). Evolution of the North Pacific Subtropical Gyre during the past 190 kyr through the interaction of the Kuroshio Current with the surface and intermediate waters. Paleoceanography. 31(11). 1498–1513. 33 indexed citations

Asahi, Hirofumi, et al.. (2015). Seasonal variability of δ¹⁸O and δ¹³C of planktic foraminifera in the Bering Sea and central subarctic Pacific during 1990–2000. Paleoceanography. 30(10). 1328–1346. 1 indexed citations

Kim, Sunghan, et al.. (2013). Biogenic opal production changes during the Mid-Pleistocene Transition in the Bering Sea (IODP Expedition 323 Site U1343). Quaternary Research. 81(1). 151–157. 31 indexed citations

10.

Asahi, Hirofumi, Heinrich Bahlburg, Leah J. LeVay, et al.. (2013). Integrated ocean drilling program expedition 341 Preliminary report: Southern Alaska margin- Interactions of tectonics, climate, and sedimentation. 3 indexed citations

11.

Okazaki, Yusuke, et al.. (2013). Glacial to deglacial ventilation and productivity changes in the southern Okhotsk Sea. Palaeogeography Palaeoclimatology Palaeoecology. 395. 53–66. 20 indexed citations

12.

Takahashi, K., et al.. (2012). Surface water productivity in the Bering Sea and the subarctic North Pacific in response to global climate cooling during the last 2.32 Myrs. EGUGA. 3946. 1 indexed citations

13.

Okazaki, Yusuke, Takuya Sagawa, Hirofumi Asahi, Keiji Horikawa, & Jonaotaro Onodera. (2012). Ventilation changes in the western North Pacific since the last glacial period. Climate of the past. 8(1). 17–24. 37 indexed citations

14.

Iwasaki, Shinya, K. Takahashi, Tohru Sakamoto, et al.. (2011). Paleoproductivity and paleoceanography of the last 4.3 Myrs at IODP Exp. 323 Site U1341 in the Bering Sea based on biogenic opal content. AGU Fall Meeting Abstracts. 2011. 1 indexed citations

15.

Asahi, Hirofumi, et al.. (2011). Biological response to the global climate regime shift in the Bering Sea and the central subarctic Pacific: Synthesis of multi-decadal long time series sinking particle study. AGU Fall Meeting Abstracts. 2011. 1 indexed citations

16.

Asahi, Hirofumi, et al.. (2011). Foraminiferal oxygen isotope records at the Bering slope (IODP exp. 323 site U1343) provide an orbital scale age model and indicate pronounced changes during the Mid-Pleistocene Transition. AGUFM. 2011. 1 indexed citations

17.

Okazaki, Yusuke, Axel Timmermann, Laurie Menviel, et al.. (2010). Deepwater Formation in the North Pacific During the Last Glacial Termination. Science. 329(5988). 200–204. 234 indexed citations

18.

Tokuyama, Hidekazu, et al.. (2007). Brine Lake in the eastern Mediterranean Sea. 2007. 187–187. 1 indexed citations

19.

Asahi, Hirofumi & Kozo Takahashi. (2006). A 9-year time-series of planktonic foraminifer fluxes and environmental change in the Bering sea and the central subarctic Pacific Ocean, 1990–1999. Progress In Oceanography. 72(4). 343–363. 29 indexed citations

20.

Okazaki, Yusuke, Kozo Takahashi, Hirofumi Asahi, et al.. (2005). Productivity changes in the Bering Sea during the late Quaternary. Deep Sea Research Part II Topical Studies in Oceanography. 52(16-18). 2150–2162. 71 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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