Ken’ichi Ohkushi

1.2k total citations
38 papers, 1.0k citations indexed

About

Ken’ichi Ohkushi is a scholar working on Atmospheric Science, Ecology and Environmental Chemistry. According to data from OpenAlex, Ken’ichi Ohkushi has authored 38 papers receiving a total of 1.0k indexed citations (citations by other indexed papers that have themselves been cited), including 35 papers in Atmospheric Science, 26 papers in Ecology and 21 papers in Environmental Chemistry. Recurrent topics in Ken’ichi Ohkushi's work include Geology and Paleoclimatology Research (34 papers), Isotope Analysis in Ecology (26 papers) and Methane Hydrates and Related Phenomena (21 papers). Ken’ichi Ohkushi is often cited by papers focused on Geology and Paleoclimatology Research (34 papers), Isotope Analysis in Ecology (26 papers) and Methane Hydrates and Related Phenomena (21 papers). Ken’ichi Ohkushi collaborates with scholars based in Japan, United States and South Korea. Ken’ichi Ohkushi's co-authors include Hodaka Kawahata, Masao Uchida, Takuya Itaki, Naokazu Ahagon, Ellen Thomas, James P. Kennett, Yasuyuki Shibata, Ken Ikehara, Tomokazu Mishima and Richard J. Behl and has published in prestigious journals such as Geophysical Research Letters, Geology and Chemical Geology.

In The Last Decade

Ken’ichi Ohkushi

38 papers receiving 1.0k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Ken’ichi Ohkushi Japan 19 900 524 487 302 137 38 1.0k
Markus Kienast Canada 21 1.1k 1.2× 655 1.3× 440 0.9× 525 1.7× 222 1.6× 66 1.4k
Sergey A. Gorbarenko Russia 20 1.3k 1.5× 558 1.1× 906 1.9× 496 1.6× 111 0.8× 92 1.5k
Katherine McIntyre United States 5 1.0k 1.2× 487 0.9× 399 0.8× 308 1.0× 156 1.1× 6 1.1k
A. E. Scrivner United Kingdom 12 834 0.9× 287 0.5× 297 0.6× 197 0.7× 205 1.5× 15 908
Lester Lembke‐Jene Germany 19 935 1.0× 401 0.8× 503 1.0× 284 0.9× 104 0.8× 58 1.0k
Laëtitia Licari France 11 776 0.9× 493 0.9× 182 0.4× 498 1.6× 162 1.2× 22 873
Hanno Kinkel Germany 14 526 0.6× 307 0.6× 243 0.5× 385 1.3× 237 1.7× 22 905
H. Okada Japan 11 700 0.8× 441 0.8× 194 0.4× 582 1.9× 189 1.4× 15 1.1k
Kathryn A Venz United States 8 843 0.9× 453 0.9× 297 0.6× 205 0.7× 178 1.3× 8 922
P.J. Mudie Canada 21 840 0.9× 285 0.5× 319 0.7× 477 1.6× 195 1.4× 30 1.0k

Countries citing papers authored by Ken’ichi Ohkushi

Since Specialization
Citations

This map shows the geographic impact of Ken’ichi Ohkushi'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 Ken’ichi Ohkushi with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ken’ichi Ohkushi more than expected).

Fields of papers citing papers by Ken’ichi Ohkushi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ken’ichi Ohkushi. 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 Ken’ichi Ohkushi. The network helps show where Ken’ichi Ohkushi may publish in the future.

Co-authorship network of co-authors of Ken’ichi Ohkushi

This figure shows the co-authorship network connecting the top 25 collaborators of Ken’ichi Ohkushi. A scholar is included among the top collaborators of Ken’ichi Ohkushi 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 Ken’ichi Ohkushi. Ken’ichi Ohkushi is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Kubota, Kaoru, et al.. (2022). Salinity, oxygen isotope, hydrogen isotope, and radiocarbon of coastal seawater of North Japan. GEOCHEMICAL JOURNAL. 56(6). 240–249. 3 indexed citations
2.
Nakanishi, Toshimichi, et al.. (2019). Radiocarbon age offsets of Plants and Bioclasts in the Holocene Sediments from the Miyazaki Plain, Southeast Coast of Kyushu, Southwest Japan. Radiocarbon. 61(6). 1939–1950. 3 indexed citations
3.
Ohkushi, Ken’ichi, et al.. (2017). Lithostratigraphy and paleoceanography in the Chukchi Rise of the western Arctic Ocean since the last glacial period. Polar Science. 11. 42–53. 12 indexed citations
4.
5.
Ohkushi, Ken’ichi, Naoki Hara, Minoru Ikehara, Masao Uchida, & Naokazu Ahagon. (2016). Intensification of North Pacific intermediate water ventilation during the Younger Dryas. Geo-Marine Letters. 36(5). 353–360. 7 indexed citations
6.
Irizuki, Toshiaki, et al.. (2015). Centennial- to millennial-scale change of Holocene shallow marine environments recorded in ostracode fauna, northeast Japan. Quaternary Research. 84(3). 467–480. 8 indexed citations
7.
Ohkushi, Ken’ichi, James P. Kennett, S. E. Moffitt, et al.. (2013). Quantified intermediate water oxygenation history of the NE Pacific: A new benthic foraminiferal record from Santa Barbara basin. Paleoceanography. 28(3). 453–467. 58 indexed citations
8.
Uchida, Masao, Ken’ichi Ohkushi, Katsunori Kimoto, et al.. (2008). Radiocarbon‐based carbon source quantification of anomalous isotopic foraminifera in last glacial sediments in the western North Pacific. Geochemistry Geophysics Geosystems. 9(4). 42 indexed citations
9.
Ohkushi, Ken’ichi, et al.. (2008). Abrupt changes of intermediate-water oxygen in the northwestern Pacific during the last 27 kyr. Geo-Marine Letters. 29(2). 125–131. 15 indexed citations
10.
11.
Ohkushi, Ken’ichi, Masao Uchida, Kaori Aoki, et al.. (2007). Radiocarbon Marine Reservoir Ages in the Northwestern Pacific Off Hokkaido Island, Japan, During the Last Deglacial Period. Radiocarbon. 49(2). 963–968. 14 indexed citations
12.
Aoki, Kaori & Ken’ichi Ohkushi. (2006). . The Quaternary Research (Daiyonki-Kenkyu). 45(3). 257–260. 3 indexed citations
13.
Kuroyanagi, Azumi, Hodaka Kawahata, & Ken’ichi Ohkushi. (2006). Reconstruction of paleoceanographic changes based on the relationship between planktonic foraminiferal assemblages and water masses off Shimokita over the last 27,000 years. 33–42. 3 indexed citations
14.
Uchida, Masao, Yasuyuki Shibata, Ken’ichi Ohkushi, et al.. (2005). Age discrepancy between molecular biomarkers and calcareous foraminifera isolated from the same horizons of Northwest Pacific sediments. Chemical Geology. 218(1-2). 73–89. 33 indexed citations
15.
Uchida, Masao, et al.. (2004). Episodic methane release events from Last Glacial marginal sediments in the western North Pacific. Geochemistry Geophysics Geosystems. 5(8). 25 indexed citations
16.
Ahagon, Naokazu, Ken’ichi Ohkushi, Masao Uchida, & Tomokazu Mishima. (2003). Mid‐depth circulation in the northwest Pacific during the last deglaciation: Evidence from foraminiferal radiocarbon ages. Geophysical Research Letters. 30(21). 75 indexed citations
17.
Ohkushi, Ken’ichi, Atsushi Suzuki, Hodaka Kawahata, & Lallan P. Gupta. (2003). Glacial–interglacial deep-water changes in the NW Pacific inferred from single foraminiferal δ18O and δ13C. Marine Micropaleontology. 48(3-4). 281–290. 14 indexed citations
18.
Uchida, Masao, Yasuyuki Shibata, Kimitaka Kawamura, et al.. (2001). Compound-Specific Radiocarbon Ages of Fatty Acids in Marine Sediments from the Western North Pacific. Radiocarbon. 43(2B). 949–956. 34 indexed citations
19.
Ohkushi, Ken’ichi, et al.. (2000). Paleoceanography of the Oyashio Area during the Last 20,000 Years Based on Benthic Foraminifera.. The Quaternary Research (Daiyonki-Kenkyu). 39(5). 427–438. 6 indexed citations
20.
Ohkushi, Ken’ichi, Ellen Thomas, & Hodaka Kawahata. (1999). Abyssal benthic foraminifera from the northwestern Pacific (Shatsky Rise) during the last 298 kyr. Marine Micropaleontology. 38(2). 119–147. 89 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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