H. Okada

1.7k total citations
15 papers, 1.1k citations indexed

About

H. Okada is a scholar working on Oceanography, Atmospheric Science and Ecology. According to data from OpenAlex, H. Okada has authored 15 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Oceanography, 5 papers in Atmospheric Science and 3 papers in Ecology. Recurrent topics in H. Okada's work include Geology and Paleoclimatology Research (5 papers), Marine and coastal plant biology (5 papers) and Marine and coastal ecosystems (5 papers). H. Okada is often cited by papers focused on Geology and Paleoclimatology Research (5 papers), Marine and coastal plant biology (5 papers) and Marine and coastal ecosystems (5 papers). H. Okada collaborates with scholars based in Japan, United States and Australia. H. Okada's co-authors include Andrew McIntyre, Susumu Honjo, Patricia Wells, K. Takahashi, K. Hagino, Ryoshi Ishiwatari, Naohiko Ohkouchi, Hodaka Kawahata, Kimitaka Kawamura and Egon T. Degens and has published in prestigious journals such as Global Biogeochemical Cycles, Palaeogeography Palaeoclimatology Palaeoecology and Organic Geochemistry.

In The Last Decade

H. Okada

15 papers receiving 1.0k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
H. Okada Japan	11	700	582	441	194	189	15	1.1k
Silke Steph Germany	14	863 1.2×	407 0.7×	415 0.9×	210 1.1×	218 1.2×	16	935
Hanno Kinkel Germany	14	526 0.8×	385 0.7×	307 0.7×	243 1.3×	237 1.3×	22	905
P J Mudie Canada	14	832 1.2×	579 1.0×	337 0.8×	326 1.7×	219 1.2×	17	1.1k
Bernard Métivier France	7	794 1.1×	288 0.5×	343 0.8×	153 0.8×	215 1.1×	10	1.1k
Maryke den Dulk Netherlands	8	952 1.4×	561 1.0×	442 1.0×	150 0.8×	310 1.6×	9	1.2k
Harald Andruleit Germany	21	854 1.2×	862 1.5×	442 1.0×	376 1.9×	158 0.8×	38	1.4k
S. Stephen Streeter United States	10	818 1.2×	436 0.7×	471 1.1×	177 0.9×	140 0.7×	11	927
P.J. Mudie Canada	21	840 1.2×	477 0.8×	285 0.6×	319 1.6×	195 1.0×	30	1.0k
Sacha de Rijk Netherlands	14	931 1.3×	445 0.8×	570 1.3×	116 0.6×	164 0.9×	17	1.1k
C. Vergnaud Grazzini France	13	911 1.3×	419 0.7×	504 1.1×	77 0.4×	259 1.4×	19	992

Countries citing papers authored by H. Okada

Since Specialization

Citations

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

Fields of papers citing papers by H. Okada

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by H. Okada. 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 H. Okada. The network helps show where H. Okada may publish in the future.

Co-authorship network of co-authors of H. Okada

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

All Works

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15 of 15 papers shown

Fernando, Allan G. Salazar & H. Okada. (2007). New calcareous nannofossil species from the Cretaceous Budden Canyon Formation, Great Valley Sequence, northern California (USA).. Journal of Nannoplankton Research. 29(1). 1–4. 1 indexed citations

Ishiwatari, Ryoshi, et al.. (2001). Alkenone-sea surface temperatures in the Japan Sea over the past 36 kyr: warm temperatures at the last glacial maximum. Organic Geochemistry. 32(1). 57–67. 80 indexed citations

Hagino, K. & H. Okada. (2001). Morphological observations of living Gephyrocapsa crassipons.. Journal of Nannoplankton Research. 23(1). 3–7. 4 indexed citations

Takahashi, K. & H. Okada. (2000). Environmental control on the biogeography of modern coccolithophores in the southeastern Indian Ocean offshore of Western Australia. Marine Micropaleontology. 39(1-4). 73–86. 79 indexed citations

Konno, Akihiro, Akiko Sukegawa, Mitsuo Kusano, et al.. (2000). Immunohistochemistry for parathyroid hormone-related protein (PTHrP) in benign and malignant mammary mixed tumors of dogs with and without hypercalcemia.. PubMed. 47(3-4). 155–62. 6 indexed citations

Takahashi, K. & H. Okada. (2000). The paleoceanography for the last 30,000 years in the southeastern Indian Ocean by means of calcareous nannofossils. Marine Micropaleontology. 40(1-2). 83–103. 66 indexed citations

Takayama, Hideo, Ryuji Tada, Takafumi Matsui, et al.. (2000). Origin of the Peñalver Formation in northwestern Cuba and its relation to K/T boundary impact event. Sedimentary Geology. 135(1-4). 295–320. 33 indexed citations

Hagino, K., et al.. (2000). Spatial dynamics of coccolithophore assemblages in the Equatorial Western-Central Pacific Ocean. Marine Micropaleontology. 39(1-4). 53–72. 108 indexed citations

Ohkouchi, Naohiko, Kimitaka Kawamura, Hodaka Kawahata, & H. Okada. (1999). Depth ranges of alkenone production in the central Pacific Ocean. Global Biogeochemical Cycles. 13(2). 695–704. 60 indexed citations

10.

Okada, H. & Patricia Wells. (1997). Late Quaternary nannofossil indicators of climate change in two deep-sea cores associated with the Leeuwin Current off Western Australia. Palaeogeography Palaeoclimatology Palaeoecology. 131(3-4). 413–432. 105 indexed citations

11.

Wells, Patricia & H. Okada. (1996). Holocene and Pleistocene glacial palaeoceanography off southeastern Australia, based on foraminifers and nannofossils in Vema cored hole V18–222∗. Australian Journal of Earth Sciences. 43(5). 509–523. 49 indexed citations

12.

Okada, H. & Andrew McIntyre. (1980). Validation of Florisphaera profunda, var. elongata (2).. Journal of Nannoplankton Research. 2(2). 81–81. 1 indexed citations

13.

Okada, H. & Andrew McIntyre. (1979). Seasonal distribution of modern coccolithophores in the western North Atlantic Ocean. Marine Biology. 54(4). 319–328. 295 indexed citations

14.

Okada, H. & Susumu Honjo. (1975). Distribution of coccolithophores in marginal seas along the western Pacific Ocean and in the Red Sea. Marine Biology. 31(3). 271–285. 144 indexed citations

15.

Degens, Egon T., H. Okada, Susumu Honjo, & John C. Hathaway. (1972). Microcrystalline sphalerite in resin globules suspended in Lake Kivu, East Africa. Mineralium Deposita. 7(1). 41 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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