Kohei Kazahaya

2.3k total citations
73 papers, 1.7k citations indexed

About

Kohei Kazahaya is a scholar working on Geophysics, Atmospheric Science and Geochemistry and Petrology. According to data from OpenAlex, Kohei Kazahaya has authored 73 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 41 papers in Geophysics, 29 papers in Atmospheric Science and 23 papers in Geochemistry and Petrology. Recurrent topics in Kohei Kazahaya's work include earthquake and tectonic studies (32 papers), Geological and Geochemical Analysis (29 papers) and Groundwater and Isotope Geochemistry (22 papers). Kohei Kazahaya is often cited by papers focused on earthquake and tectonic studies (32 papers), Geological and Geochemical Analysis (29 papers) and Groundwater and Isotope Geochemistry (22 papers). Kohei Kazahaya collaborates with scholars based in Japan, United States and Kazakhstan. Kohei Kazahaya's co-authors include Hiroshi Shinohara, Genji Saito, M. Ohwada, Jun‐ichi Hirabayashi, Jacob B. Lowenstern, Noritoshi Morikawa, Yoshihisa Kawanabe, Toshiya Mori, Nobuo Matsushima and Werner F. Giggenbach and has published in prestigious journals such as Journal of Geophysical Research Atmospheres, Geochimica et Cosmochimica Acta and Geophysical Research Letters.

In The Last Decade

Kohei Kazahaya

71 papers receiving 1.6k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Kohei Kazahaya Japan 23 1.1k 471 299 271 251 73 1.7k
Antonio Paonita Italy 30 1.7k 1.6× 414 0.9× 236 0.8× 334 1.2× 204 0.8× 66 2.2k
Matthias Hort Germany 24 949 0.8× 570 1.2× 260 0.9× 168 0.6× 123 0.5× 72 1.7k
P. M. Nuccio Italy 26 1.2k 1.0× 300 0.6× 195 0.7× 190 0.7× 188 0.7× 44 1.7k
J. Maarten de Moor United States 23 1.2k 1.0× 451 1.0× 304 1.0× 336 1.2× 153 0.6× 62 1.8k
T. M. Gerlach United States 23 1.3k 1.1× 662 1.4× 490 1.6× 343 1.3× 227 0.9× 43 2.0k
Dmitri Rouwet Italy 26 923 0.8× 349 0.7× 351 1.2× 321 1.2× 351 1.4× 63 1.6k
Gladys V. Melián Spain 22 854 0.8× 215 0.5× 321 1.1× 234 0.9× 148 0.6× 99 1.4k
Eleazar Padrón Spain 21 807 0.7× 202 0.4× 286 1.0× 226 0.8× 144 0.6× 97 1.3k
Andrea Luca Rizzo Italy 30 1.9k 1.7× 431 0.9× 235 0.8× 323 1.2× 228 0.9× 110 2.3k
José Barrancos Spain 21 783 0.7× 232 0.5× 298 1.0× 202 0.7× 107 0.4× 87 1.2k

Countries citing papers authored by Kohei Kazahaya

Since Specialization
Citations

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

Fields of papers citing papers by Kohei Kazahaya

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kohei Kazahaya

This figure shows the co-authorship network connecting the top 25 collaborators of Kohei Kazahaya. A scholar is included among the top collaborators of Kohei Kazahaya 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 Kohei Kazahaya. Kohei Kazahaya 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.
2.
Kazahaya, Kohei, Masaaki Takahashi, Yoshiro Nishio, et al.. (2014). Spatial distribution and feature of slab-related deep-seated fluid in SW Japan. Journal of Japanese Association of Hydrological Sciences. 44(1). 3–16. 28 indexed citations
3.
Ohsawa, Shinji, Makoto Yamada, Taketoshi Mishima, et al.. (2014). Origin of saline waters distributed along the Median Tectonic Line in southwest Japan: Hydrogeochemical investigation on possibility of derivation of metamorphic dehydrated fluid from subducting oceanic plate. Journal of Japanese Association of Hydrological Sciences. 44(1). 17–38. 12 indexed citations
4.
Shinohara, Hiroshi, Kohei Kazahaya, Genji Saito, Nobuo Matsushima, & Yoshihisa Kawanabe. (2014). Degassing activity from Iwodake rhyolitic cone, Satsuma-Iwojima volcano, Japan: Formation of a new degassing vent, 1990–1999. Earth Planets and Space. 54(3). 175–185. 36 indexed citations
5.
Kazahaya, Kohei, et al.. (2011). Hydrological changes due to the M7.0 earthquake at Iwaki, Fukushima induced by the 2011 Tohoku-oki earthquake, Japan. AGU Fall Meeting Abstracts. 2011. 1 indexed citations
6.
Kazahaya, Kohei, et al.. (2011). CO 2 -bearing saline water found in groundwater, related to deep low frequency earthquakes. AGUFM. 2011. 3 indexed citations
7.
Oyama, Yoichi, et al.. (2011). Relationship between water quality of deep-groundwater and geology in non-volcanic areas in Japan. 18(1). 25–34. 1 indexed citations
8.
Kazahaya, Kohei, Noritoshi Morikawa, Moriaki Yasuhara, et al.. (2009). Wide distribution of thermal brines along Median Tectonic Lines SW Japan: Their chemical nature and origin. AGUFM. 2009. 2 indexed citations
9.
Mori, Toshiya, Jun‐ichi Hirabayashi, Kohei Kazahaya, et al.. (2007). A Compact Ultraviolet Spectrometer System(COMPUSS) for Monitoring Volcanic SO2 Emission : Validation and Preliminary Observation. 52(2). 105–112. 20 indexed citations
10.
Morikawa, Noritoshi, et al.. (2005). 4 He濃度とHe同位体比を合せた,地質学的に活動的な地域における地下水滞留時間の推定. Geophysical Research Letters. 32(2). 1–2406. 1 indexed citations
11.
Saito, Genji, Kozo Uto, Kohei Kazahaya, et al.. (2005). Petrological characteristics and volatile content of magma from the 2000 eruption of Miyakejima Volcano, Japan. Bulletin of Volcanology. 67(3). 268–280. 45 indexed citations
12.
Takahashi, Hiroshi, et al.. (2004). Application of radiocarbon to detect a deep source CO2 in soil air. Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms. 223-224. 483–488. 2 indexed citations
13.
Takahashi, Hiroshi, Kohei Kazahaya, Hiroshi Shinohara, & Toshio Nakamura. (2004). Pathways for Escape of Magmatic Carbon Dioxide to Soil Air at Unzen Volcano, SW Japan. Radiocarbon. 46(1). 491–496. 6 indexed citations
14.
Saito, Genji, Kozo Uto, Kohei Kazahaya, & Hisaaki Shinohara. (2003). Magma ascent and degassing process of Miyakejima 2000 eruption: constraints from glass inclusions and volcanic gases. Geochimica et Cosmochimica Acta Supplement. 67(18). 408. 1 indexed citations
15.
Morikawa, Noritoshi, Kohei Kazahaya, Keisuke Nagao, et al.. (2003). Mixing of meteoric water and thermal water inferred from helium isotopes and its application to groundwater residence time. Geochimica et Cosmochimica Acta Supplement. 67(18). 306. 1 indexed citations
16.
Saito, Genji, Kohei Kazahaya, Hiroshi Shinohara, James A. Stimac, & Yoshihisa Kawanabe. (2001). Variation of volatile concentration in a magma system of Satsuma-Iwojima volcano deduced from melt inclusion analyses. Journal of Volcanology and Geothermal Research. 108(1-4). 11–31. 67 indexed citations
17.
Kazahaya, Kohei, et al.. (1996). High-temperature Anomaly of Groundwater and Stable Carbon Isotope Ratio of Total Carbonic Acid in and around Kobe City. Geographical Review of Japan. 69(7). 493–503. 1 indexed citations
18.
Kazahaya, Kohei, Hiroshi Shinohara, & Genji Saito. (1994). Excessive degassing of Izu-Oshima volcano: magma convection in a conduit. Bulletin of Volcanology. 56(3). 207–216. 247 indexed citations
19.
Kazahaya, Kohei & Hiroshi Shinohara. (1991). Generation of HCl by High Temperature Hydrolysis of NaCl (High-Temperature Acid Fluids And Associated Alteration And Mineralization) -- (Volcanic Hydrothermal Systems and Related Experimental Studies). 101–103.
20.
Kazahaya, Kohei & Hiroshi Shinohara. (1990). A Simple Model on Long-Term Magmatic Processes in Relation to Growth of Volcano. 1990(2). 91. 1 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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