K. Hama

414 total citations
14 papers, 346 citations indexed

About

K. Hama is a scholar working on Geochemistry and Petrology, Mechanics of Materials and Environmental Engineering. According to data from OpenAlex, K. Hama has authored 14 papers receiving a total of 346 indexed citations (citations by other indexed papers that have themselves been cited), including 6 papers in Geochemistry and Petrology, 4 papers in Mechanics of Materials and 4 papers in Environmental Engineering. Recurrent topics in K. Hama's work include Groundwater and Isotope Geochemistry (5 papers), Hydrocarbon exploration and reservoir analysis (4 papers) and Groundwater flow and contamination studies (4 papers). K. Hama is often cited by papers focused on Groundwater and Isotope Geochemistry (5 papers), Hydrocarbon exploration and reservoir analysis (4 papers) and Groundwater flow and contamination studies (4 papers). K. Hama collaborates with scholars based in Japan, United Kingdom and Slovakia. K. Hama's co-authors include Richard Metcalfe, Takanori Kunimaru, Teruki Iwatsuki, Alan J. Martin, Hidekazu Yoshida, Satoru Shimizu, Takeshi Naganuma, Masashi Akiyama, Y. Ishijima and Kazuhiro Aoki and has published in prestigious journals such as Geochimica et Cosmochimica Acta, Engineering Geology and Applied Geochemistry.

In The Last Decade

K. Hama

14 papers receiving 313 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
K. Hama Japan	10	107	101	94	75	56	14	346
F.K. Hiebert United States	5	127 1.2×	65 0.6×	120 1.3×	26 0.3×	36 0.6×	8	378
P. Fritz United States	3	116 1.1×	98 1.0×	33 0.4×	11 0.1×	57 1.0×	7	413
Hengchao Xu China	13	33 0.3×	80 0.8×	146 1.6×	22 0.3×	68 1.2×	33	404
Stewart M. Hamilton Canada	10	65 0.6×	96 1.0×	118 1.3×	22 0.3×	141 2.5×	28	509
Н. А. Харитонова Russia	11	27 0.3×	166 1.6×	160 1.7×	46 0.6×	126 2.3×	96	378
Chunyang Tan United States	12	238 2.2×	49 0.5×	102 1.1×	15 0.2×	138 2.5×	28	510
R.G. Wiese Canada	7	47 0.4×	152 1.5×	82 0.9×	23 0.3×	40 0.7×	10	378
André Friese Germany	11	29 0.3×	102 1.0×	87 0.9×	23 0.3×	65 1.2×	16	344
Randall A. Locke United States	12	190 1.8×	74 0.7×	66 0.7×	7 0.1×	60 1.1×	29	326
Germán Velásquez France	12	15 0.1×	83 0.8×	73 0.8×	13 0.2×	28 0.5×	29	526

Countries citing papers authored by K. Hama

Since Specialization

Citations

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

Fields of papers citing papers by K. Hama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of K. Hama

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

All Works

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14 of 14 papers shown

Solomon, D. Kip, Tomoko Ohta, Takuya Matsumoto, et al.. (2019). Degassing behavior of noble gases from groundwater during groundwater sampling. Applied Geochemistry. 104. 60–70. 9 indexed citations

Hirano, Takao, et al.. (2007). RF-MEMS for reconfigurable satellite antenna. 570–570. 1 indexed citations

Shimizu, Satoru, Masashi Akiyama, Y. Ishijima, et al.. (2006). Molecular characterization of microbial communities in fault‐bordered aquifers in the Miocene formation of northernmost Japan. Geobiology. 4(3). 203–213. 52 indexed citations

Hama, K., et al.. (2006). Groundwater evolution processes in the sedimentary formation at the Horonobe, northern Hokkaido, Japan. Geochimica et Cosmochimica Acta. 70(18). A280–A280. 5 indexed citations

Hama, K., Takanori Kunimaru, Richard Metcalfe, & Alan J. Martin. (2006). The hydrogeochemistry of argillaceous rock formations at the Horonobe URL site, Japan. Physics and Chemistry of the Earth Parts A/B/C. 32(1-7). 170–180. 78 indexed citations

Sugita, Takashi, Kanji Takeo, K. Hama, et al.. (2004). DNA sequence diversity of intergenic spacer 1 region in the non-lipid-dependent speciesMalasseziapachydermatisisolated from animals. Medical Mycology. 43(1). 21–26. 31 indexed citations

Yamamoto, Masayoshi, T. Sato, Keiichi Sasaki, et al.. (2003). Anomalously high 234U/238U activity ratios of Tatsunokuchi hot spring waters, Ishikawa Prefecture, Japan. Journal of Radioanalytical and Nuclear Chemistry. 255(2). 369–373. 10 indexed citations

Iwatsuki, Teruki, et al.. (2002). Isotopic and morphological features of fracture calcite from granitic rocks of the Tono area, Japan: a promising palaeohydrogeological tool. Applied Geochemistry. 17(9). 1241–1257. 50 indexed citations

Hama, K., Richard Metcalfe, Hidekazu Yoshida, et al.. (2002). Mineralogical and petrological evidence for the hydrogeological characteristics of the Tsukiyoshi Fault, Japan. Quarterly Journal of Engineering Geology and Hydrogeology. 35(2). 189–202. 8 indexed citations

10.

Iwatsuki, Teruki, Sheng Xu, Yoshihiko Mizutani, et al.. (2001). Carbon-14 study of groundwater in the sedimentary rocks at the Tono study site, central Japan. Applied Geochemistry. 16(7-8). 849–859. 26 indexed citations

11.

Hama, K., K. Bateman, P. Coombs, et al.. (2001). Influence of bacteria on rock-water interaction and clay mineral formation in subsurface granitic environments. Clay Minerals. 36(4). 599–613. 23 indexed citations

12.

Yoshida, Hidekazu, et al.. (2000). Overview of the stability and barrier functions of the granitic geosphere at the Kamaishi Mine: relevance to radioactive waste disposal in Japan. Engineering Geology. 56(1-2). 151–162. 31 indexed citations

13.

Puigdomènech, I., L. Trotignon, Svetlana Kotelnikova, et al.. (1999). O2 Consumption in a Granitic Environment. MRS Proceedings. 608(1). 9 indexed citations

14.

Iwatsuki, Teruki, et al.. (1994). Hydrogeochemical Investigation of Groundwater in the Tono Area, Japan. MRS Proceedings. 353. 13 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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