Bulletin, reports, and books

last update 2023.7.25

National Institute of Advanced Industrial Science and Technology (AIST)
Geological Survey of Japan, AIST
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REE partitioning between Fe-Mn oxyhydroxide deposits and seawater

Thesis

Bulletin

  1. Kawabe, I., Takahashi, T., Tanaka, K. and Ohta, A. (2006) Hydration change reaction of light REE3+(aq) series-II: Contrasting nephelauxetic effects between hydrated [REE(H2O)9]3+ and [REE(H2O)8]3+ series and the tetrad effects in their hydration enthalpies and REE-OH2 distances. J. Earth Planet. Sci. Nagoya Univ. 53, 51–71. [doi:10.18999/joueps.53.51]

  2. Kawabe, I., Takahashi, T., Tanaka, K. and Ohta, A. (2006) Hydration change reaction of light REE3+(aq) series-I: An important constraint on REE(III) partitioning and complex formation reactions in low-temperature to hydrothermal condition. J. Earth Planet. Sci. Nagoya Univ. 53, 33–50. [doi:10.18999/joueps.53.33]

  3. Ohta, A., Naito, K., Okuda, Y. and Kawabe, I. (1999) Geochemical characteristics of Antarctic deep-sea ferromanganese nodules from highly oxic deep-sea water. J. Earth Planet. Sci. Nagoya Univ., 46, 1–13. [doi:10.18999/joueps.46.1]

  4. Kawabe, I., Toriumi, T., Ohta, A. and Kanda, S. (1995) Effective application of ultrasonic nebulizer to ICP-AES analysis of REE, Y and Sc in geochemical samples. J. Earth Planet. Sci. Nagoya Univ., 42, 1–15. [doi:10.18999/joueps.42.1]

Magazine

  1. Ohta, A. (2001) Geochemical behavior of REE for ferromanganese nodule. In: The latest Marine Chemistry II, Gekkankaiyou (KAIYO MONTHLY) Special Publication 25, 231-238 (in Japanese).

 

Geochemical mapping

Bulletin

  1. Ohta, A. Geochemical mapping in the remote islands of Kyushu region, Japan Bull. Geol. Surv. Japan, 69(5), 233–263. [doi: 10.9795/bullgsj.69.233]

  2. Ohta, A. (2018) Evaluation of straightforward and rapid multi-element analyses of stream sediments for geochemical mapping the remote islands of Japan — Seto Inland Sea region — Bull. Geol. Surv. Japan, 69(1), 1–30. [doi: 10.9795/bullgsj.69.1]

    Ohta, A., Imai, N., Tachibana, Y., Ikehara, K., Katayama, H. and Nakajima, T. (2017) Influence of different sedimentary environments on multi-elemental marine geochemical maps of the Pacific Ocean and Sea of Japan, Tohoku region. Bull. Geol. Surv. Japan, 68 (3), 87–110. [doi: 10.9795/bullgsj.68.87]

  3. Ohta A., Imai, N., Terashima, S., Tachibana, Y., Ikehara, K. and Katayama, H. (2015) Elemental distribution of surface sediments around Oki Trough including adjacent terrestrial area: Strong impact of Japan Sea Proper Water on silty and clayey sediments. Bull. Geol. Surv. Japan, 66 (3/4), 81–101. [doi:10.9795/bullgsj.66.81]*

  4. Ohta A. and Minami M. (2013) Less impact of limestone bedrock on elemental concentrations in stream sediments–Case study of Akiyoshi area–. Bull. Geol. Surv. Japan, 64 (5/6), 121–138. [doi:10.9795/bullgsj.64.121]*

  5. Furuya, S., Bong, W.S.K., Maeda, I., Suzuki, H., Abe, Y., Osaka, K., Itou, M., Ohta, A., Ninomiya, T. and Nakai, I. (2012) Development of trace heavy element quantification in soil samples by using high-energy (116 keV) synchrotron radiation X-ray fluorescence analysis for forensic investigation. Advances in X-ray Chemical Analysis, Japan, 43, 341–354 (in Japanese with English abstract).

  6. Ohta, A., Imai, N., Terashima, S. and Tachibana, Y. (2007) Preliminary study for speciation geochemical mapping using a sequential extraction method. Bull. Geol. Surv. Japan, 58 (7/8), 201–237. [doi:10.9795/bullgsj.58.201]*

  7. Ito, T. and Ohta, A. (1999) A simple program for geochemical mapping. Bull. Nagoya Univ. Furukawa Museum, 15, 117–124. (in Japanese).

  8. Tanaka, T., Kawabe, I., Yamamoto, K., Iwamori, H., Hirahara, Y., Asahara, Y., Liu, Y., Dragusanu, C., Ito, T., Miura, N., Ohta, A., Takahashi, H., Tanimizu, M.., Senda, R., Takayanagi, Y., Takagagi, M., Ohnishi, I., Kachi, T., Kurata, Y., Takama, T., Tanaka, K. and Mitsuta, S. (1998) Geoenvironmental assessment with geochemical map. Bull. Nagoya Univ. Furukawa Museum, 14, 125–133. (in Japanese).

  9. Tanaka, T., Kawabe, Yamamoto, K., Iwamori, H., I., Hirahara, Y., Mimura, K., Asahara, Y., Minami, M., Ito, T., Dragusanu, C., Miura, N., Aoki, H., Ohta, A., Togami, K., Toriumi, T. and Yohko, M., Sakakibara, T., Tanimizu, M., Mizutani, Y., Miyanaga, N., Murayama, M. and Takayanagi, Y. (1996) Geochemical mapping of the north area of Toyota City, Aichi Prefecture, central Japan: Distinct chemical characteristics of stream sediments between granitic and sedimentary rock area. J. Earth Planet. Sci. Nagoya Univ., 43, 27–47. [doi:10.18999/joueps.43.27]

  10. Tanaka, T., Kawabe, I., Hirahara, Y., Iwamori, H., Mimura, K., Sugisaki, R., Asahara, Y., Ito, T., Yarai, H., Yonezawa, C., Kanda, S., Shimizu, O., Hayashi, M., Miura, N., Mutoh, K., Ohta, A., Sugimura, K., Togami, K., Toriumi, T. and Yohko, M. (1994) Geochemical survey of the Sanage-Yama area in Aichi Prefecture for environmental assessment. J. Earth Planet. Sci. Nagoya Univ., 41, 1–31. [doi:10.18999/joueps.41.1]

Book

  1. Imai, N., Okai, T., Ohta, A., Mikoshiba (Ujiie), M., Kubota, R., Tachibana, Y., Terashima, S., Ikehara, K., Katayama, H. and Noda, A. (2019) Geochemical Map of Chubu Region. Geological Survey of Japan, AIST, Tsukuba. 127p.

    Imai, N., Okai, T., Ohta, A., Mikoshiba (Ujiie), M., Kanai, Y., Kubota, R., Tachibana, Y., Terashima, S., Ikehara, K., Katayama, H. and Noda, A. (2015) Geochemical Map of Kanto Region. Geological Survey of Japan, AIST, Tsukuba. 217p.

  2. Ohta, A. and Imai, N. (2011) Comprehensive Survey of Multi-Elements in Coastal Sea and Stream Sediments in the Island Arc Region of Japan: Mass Transfer from Terrestrial to Marine Environments. Advanced Topics in Mass Transfer. (Mohamed El-Amin, ed.), 373–398, InTech. [doi:10.5772/14251] (total cumulative downloads = 2046 in 19 August, 2021)

  3. Imai, N., Terashima, S., Ohta, A., Mikoshiba, M., Okai, T., Tachibana, Y., Togashi, S., Matsuhisa, Y., Kanai, Y., Kamioka, H. (2010). Elemental distribution in Japan – Geochemical map of Japan –. In: N. Imai (Ed.). Geological Survey of Japan, AIST, Tsukuba. 207p. <Database of elemental distribution in Japan is available at http://riodb02.ibase.aist.go.jp/geochemmap/index.htm >.

  4. Imai, N., Terashima, S., Ohta, A., Mikoshiba, M., Okai, T., Tachibana, Y., Togashi, S., Matsuhisa, Y., Kanai, Y. and Kamioka, H. (2004) Geochemical map of Japan. In: N. Imai (Ed.). Geological Survey of Japan, AIST, Tsukuba. 209 p. <Database of elemental distribution in Japan is available at http://riodb02.ibase.aist.go.jp/geochemmap/index.htm >.

Magazine

  1. Ohta, A., Imai, N., Okai, T. (2019) Geochemical map display in the METI for Geology Day on May 10. GSJ Chishitsu News, 8 (9), 241–243 (in Japanese). [pdf]

  2. Ohta, A., Imai, N., Terashima, S., Tachibana, Y., Okai, T., Ujiie-Mikoshiba, M. and Kubota, R. (2008) Evaluation of a sequential extraction procedure for the speciation of elements in sediments –Preliminary study for speciation geochemical mapping–. Chishitsu News, 646, 30–38 (in Japanese). [pdf]

  3. Ohta, A., Imai, N., Terashima, S., Tachibana, Y., Okai, T., Ujiie-Mikoshiba, M. and Kubota, R. (2008) Application of a geoinfromation system (GIS) and a statistical procedure to investigate elemental behaviors in stream sediments –New data analysis of geochemical maps–. Chishitsu News, 646, 22–29 (in Japanese). [pdf < file1 / file2>]

  4. Mikoshiba (Ujiie), M., Imai, N., Terashima, S., Okai, T., Ohta, A., Tachibana, Y., Kubota, R., Kanai, Y., Kamioka, H., Togashi, S. and Matsuhisa Y. (2007) The geochemical map of the Shikoku region, Japan. Chishitsu News, 638, 14–19 (in Japanese). [pdf]

  5. Imai, N., Terashima, S., Okai, T., Mikoshiba (Ujiie), M., Ohta, A., Tachibana, Y., Kanai, Y., Kamioka, H., Togashi, S. and Matsuhisa, Y. (2005) The geochemical map of Kinki region, Japan. Chishitsu News, 614, 50–52 (in Japanese). [pdf]

  6. Imai, N., Terashima, S., Ohta, A., Mikoshiba (Ujiie), M., Okai, T., Tachibana, Y., Togashi, S., Matsuhisa, Y., Kanai, Y., Kamioka, H. and Taniguchi, M. (2004) Geochemical map of Japan. Chishitsu News, 604, 30–36 (in Japanese). [pdf; file1 / file2]

  7. Imai, N., Terashima, S., Okai, T., Mikoshiba (Ujiie), M., Ohta, A., Tachibana, Y., Kanai, Y., Kamioka, H., Togashi, S. and Matsuhisa, Y. (2004) The geochemical map around Shizuoka, Tokai Region, Japan. Chishitsu News, 594, 31–33 (in Japanese). [pdf]

  8. Imai, N., Terashima, S., Okai, T., Mikoshiba (Ujiie), M., Ohta, A., Tachibana, Y., Kanai, Y., Kamioka, H., Togashi, S. and Matsuhisa, Y. (2003) The geochemical map of Niigata region, Japan. Chishitsu News, 583, 25–27 (in Japanese). [pdf]

  9. Imai, N., Terashima, S., Okai, T., Kanai, Y., Mikoshiba (Ujiie), M., Ohta, A., Tachibana, Y., Kamioka, H., Togashi, S., Matsuhisa, Y., Taniguchi, M. and Yokota, S. (2002) The geochemical map of Hokuriku district, Japan. Chishitsu News, 570, 43–44 (in Japanese). [pdf]

  10. Imai, N., Terashima, S., Okai, T., Kanai, Y., Mikoshiba (Ujiie), M., Ohta, A., Tachibana, Y., Kamioka, H., Togashi, S., Matsuhisa, Y., Taniguchi, M. and Yokota, S. (2001) The geochemical map of Tyugoku distinct, Japan. Chishitsu News, 560, 46–47 (in Japanese). [pdf]

 

XAFS spectroscopy

Report

  1. Ohta A. (2017) Influence of different drying conditions on Cu speciation in stream sediment, coastal sea sediment, and soil. Photon Factory Activity Report 2016, 34, 178: 1–3. [pdf]

  2. Ohta A. (2014) Chemical stability of CuO and ZnO artificially added to a soil material. Photon Factory Activity Report 2013, 31B, 476:1–2. [pdf]

  3. Ohta A. (2013) Speciation study of zinc in Japanese geochemical reference materials. Photon Factory Activity Report 2012, 30B, 29:1–2. [pdf]

  4. Ohta, A., Tsuno, H., Kagi, H. and Nomura, M. (2012) Reduction of hexavalent chromium in soils by X-ray irradiation. Photon Factory Activity Report 2011, 29B, 5:1–2. [pdf]

  5. Ohta, A., Kagi, H., and Ishibashi, H. (2010) Speciation study of copper in stream sediments. Photon Factory Activity Report 2009, 27B, 39. [pdf]

  6. Ohta, A., Tsuno, H., Kagi, H., Fukura, S. and Nomura, M. (2006) Speciation study of hexavalent chromium reduced by Humic acid. Photon Factory Activity Report 2005, 23B, 18. [pdf]

  7. Ohta, A., Tsuno, H., Kagi, H., Kanai, Y. and Nomura, M. (2004) XAFS analysis of Fe, Mn, and Zn of an aeolian dust during transportation from China to Japan. Photon Factory Activity Report 2003, 21B, 20. [pdf]

  8. Tsuno, H., Kagi, H., Ohta, A., Takahashi, Y., Akagi, and Nomura, M. (2003) XANES study on the trace amounts of ytterbium ions incorporated in calcite: Spontaneously induced reduction of trivalent ytterbium in calcite. Photon Factory Activity Report 2002, 20B, 152. [pdf]

  9. Ohta, A., Tsuno, H., Kagi, H., Takahashi, Y., Nomura, M., Kawabe, I. (2002) Structural change of REE coprecipitated with Fe-Mn oxyhydroxides. Photon Factory Activity Report 2001, 19B, 24. [pdf]

 

Aeolian Dust

Bulletin

  1. Kanai, Y., Ohta, A., Kamioka, H., Imai, N., Shimizu, H., Takahashi, Y., Kai, K., Hayashi, M. and Zhang, R. (2005) Observation of mass concentration and particle size of atmospheric aerosol in east Asia and dry deposition in Tsukuba in combination with optical particle counter observation. Bull. Geol. Surv. Japan, 56 (7/8), 273–301. [doi:10.9795/bullgsj.56.273]*

  2. Ohta, A., Terashima, S., Kanai, Y., Kamioka, H., Imai, N., Matsuhisa, Y., Shimizu, H., Takahashi, Y., Kai, K., Hayashi, M. and Zhang, R. (2005) Chemical characteristics of water-insoluble components in aeolian dust collected in China in spring 2002. Bull. Geol. Surv. Japan, 56 (7/8), 259–272. [doi:10.9795/bullgsj.56.259]*

  3. Ohta, A., Terashima, S., Kanai, Y., Kamioka, H., Imai, N., Matsuhisa, Y., Shimizu, H., Takahashi, Y., Kai, K., Hayashi, M. and Zhang, R. (2005) Seasonal change of chemical composition of water-insoluble components in aerosol particles collected in Tsukuba from February 2001 to June 2002. Bull. Geol. Surv. Japan, 56 (3/4), 99–116. (in Japanese with English abstract). [doi:10.9795/bullgsj.56.99]*

  4. Ohta, A., Terashima, S., Kanai, Y., Kamioka, H., Imai, N., Matsuhisa, Y., Shimizu, H., Takahashi, Y., Kai, K., Hayashi, M. and Zhang, R. (2003) Grain-size distribution and chemical composition of water-insoluble components in aeolian dust collected in Japan in spring 2002. Bull. Geol. Surv. Japan, 54 (9/10), 303–322. [doi:10.9795/bullgsj.54.303]*

  5. Kanai, Y., Ohta, A., Kamioka, H., Terashima, S., Imai, N., Matsuhisa, Y., Kanai, M., Shimizu, H., Takahashi, Y., Kai, K., Xu, B., Hayashi, M. and Zhang, R. (2003) Variation of concentrations and physicochemical properties of aeolian dust obtained in east China and Japan from 2001 to 2002. Bull. Geol. Surv. Japan, 54 (7/8), 251–267. [doi:10.9795/bullgsj.54.251]*

  6. Zhang, R., Shi, G., Kanai, Y., Ohta, A., Xu, Y., Gong, Y. and Chen, H. (2002) TSP mass concentration and number concentration of particles in dust storm weather in 2002 spring of Beijing. The Chinese Journal of Process Engineering, 2, 289–292. (in Chinese with English abstract).

Proceedings

  1. Kanai, Y., Ohta, A., Kamioka, H., Terashima, S., Imai, N., Kanai, M., Shimizu, H., Takahashi, Y., Kai, K., Hayashi, M., Zhang, R. and Sheng, L. (2005) Dust Experiment on Climate Impact, 2005 Average concentrations of TSP and mineral matters transported in east China and Japan during ADEC Project. Proceedings of the 4th ADEC (Aeolian Dust Experiment on Climate Impact ) Workshop, 167–169.

  2. Ohta, A., Kanai, Y., Terashima, S., Kamioka, H., Imai, N., Matsuhisa, Y., Shimizu, H., Takahashi, Y., Kai, K., Hayashi, M., Zhang, R., Tsuno, H., Kagi, H. and Nomura, M. (2005) Elucidation of elemental behavior of aeolian dust transported from China to Japan. Proceedings of the 4th ADEC (Aeolian Dust Experiment on Climate Impact ) Workshop, 297–300.

 

Research for metal speciation in soils and sediments

Bulletin

  1. Kubota, R., Ohta, A., Tachibana, Y., Itaki, T., Katayama, H., Suzuki, Y. and Manaka, M. (2022) Chemical composition of marine surface sediments around Tokara Islands (GB21-1 Cruise), Japan. Bull. Geol. Surv. Japan, 73 (5/6), 337–347 (in Japanese with English abstract). [doi:10.9795/bullgsj.73.5-6_337]

  2. Ohta, A., Kubota, R. and Okai, T. (2014) Variation of mineralogical compositions in sequential extraction procedure adapted to geochemical reference materials (sediment series). Bull. Geol. Surv. Japan, 65 (3/4), 23–36. [doi:10.9795/bullgsj.65.23]*

  3. Ohta, A., Kagi, H., Tsuno, H., Nomura, M., Okai, T. and Yanagisawa, N. (2011) IR and XANES spectroscopic studies of humic acids reacting with Cr(III) and Cr(VI). Bull. Geol. Surv. Japan, 62 (9/10), 347–355. [doi:10.9795/bullgsj.62.347]*

  4. Terashima, S., Imai, N., Ikehara, K., Katayama, H., Okai, T., Mikoshiba(Ujiie), M., Ohta, A. and Kubota, R. (2008) Variation of elemental concentrations of river and marine sediments according to the grain size classification. Bull. Geol. Surv. Japan, 59(9/10), 439–459 (in Japanese with English abstract). [doi:10.9795/bullgsj.59.439]*

  5. Terashima, S., Imai, N., Tachibana, Y., Okai, T., Mikoshiba, M. U., Ohta, A. and Kubota, R. (2007) Chemical composition and background evaluation of soils and stream sediments from Kanto district, and marine sediments from Tokyo Bay. Bull. Geol. Surv. Japan, 58 (3/4), 69–91 (in Japanese with English abstract). [doi:10.9795/bullgsj.58.61]*

  6. Terashima, S., Imai, N., Okai, T., Mikoshiba, M. U., Ohta, A., Ikehara, K. and Katayama, H. (2006) Selenium abundance in recent sediments and their relation to sedimentary environments. Bull. Geol. Surv. Japan, 57 (3/4), 105–119 (in Japanese with English abstract). [doi:10.9795/bullgsj.57.105]*

  7. Terashima, S., Imai, N., Ikehara, K., Katayama, H., Okai, T., Mikoshiba, M. U. and Ohta, A. (2005) Geochemistry of selenium in marine sediments from the eastern part of the Japan Sea. Bull. Geol. Surv. Japan, 56 (9/10), 325–340 (in Japanese with English abstract). [doi:10.9795/bullgsj.56.325]*

  8. Terashima, S., Imai, N., Ohta, A., Okai, T. and Mikoshiba, M. U. (2005) Geochemistry of selenium in soils from the Kanto district, Japan. Bull. Bull. Geol. Surv. Japan, 56 (1/2), 9–23 (in Japanese with English abstract). [doi:10.9795/bullgsj.56.9]*

  9. Terashima, S., Imai, N., Ikehara, K., Katayama, K., Noda, A., Ohta, A., Okai, T. and Mikoshiba, M. U. (2004) Geochemistry of biogenic silica, carbonate materials and sea salts in the coastal marine sediments around the Japanese island. Bull. Geol. Surv. Japan, 55 (5/6), 153–169 (in Japanese with English abstract). [doi:10.9795/bullgsj.55.153]*

  10. Terashima, S., Imai, N., Ohta, A., Okai, T. and Mikoshiba, M. (2004) Geochemical of soils from the southern Kanto district, Japan: Preliminary study for the soil geochemical mapping (part 5: Generalization). Bull. Geol. Surv. Japan, 55 (1/2), 1–18. (in Japanese with English abstract). [doi:10.9795/bullgsj.55.1]*

  11. Terashima, S., Ohta, A., Imai, N., Okai, T., Mikoshiba, M. and Taniguchi, M. (2002) Geochemical of toxic trance elements (As, Sb, Pb, Cr, Mo, Bi, Cd, Tl) in the soils from Kanto District, Japan: Preliminary study for the soil geochemical mapping (part 3). Bull. Geol. Surv. Japan, 53 (11/12), 749–774. (in Japanese with English abstract). [doi:10.9795/bullgsj.53.749]*

  12. Terashima, S., Ohta, A., Imai, N., Okai, T., Mikoshiba, M. and Taniguchi, M. (2001) Chemical composition of the alluvial soils from the Kanto District, Japan: Preliminary study for the soil geochemical mapping (part 2). Bull. Geol. Surv. Japan, 52 (8), 347–369.(in Japanese with English abstract). [doi:10.9795/bullgsj.52.347]*

Report

  1. Kubota, R., Ohta, A., Imai, N., Tachibana, Y., Itaki, T., Katayama, H., Amano, A. and Okai T (2019) Chemical composition of marine surface sediments in west of the Amami-O Shima Island (GK17-2 Cruise), Japan. In: Marine Geological and Geophisical Studies around Okinawa Island —around of Miyako, Ishigaki and Iriomote Islands— (ed. Inoue, T.), GSJ Interim Report no. 77, 153–162 (in Japanese).

  2. Ohta, A., Kubota, R., Imai, N., Tachibana, Y., Itaki, T., Katayama, H., Sugisaki, A. and Okai T (2019) Chemical composition of marine surface sediments around Miyakojima, Ishigakijima and Iriomotejima Islands (GK18-1 Cruise), Japan. In: Marine Geological and Geophisical Studies around Okinawa Island —around of Miyako, Ishigaki and Iriomote Islands— (ed. Inoue, T.), GSJ Interim Report no. 77, 94–107 (in Japanese).

  3. Ohta, A., Imai, N., Tachibana, Y., Itaki, T., Katayama, H., Amano, A. and Okai, T. (2017) Chemical composition of marine sediments around Amami-Ohshima, Tokunoshima and KIkaijima Islands (GK15-2 Cruise), Japan. In: Marine Geological and Geophisical Studies around Okinawa Island —around of Miyako-Shima Island— (ed. Itaki, T.), GSJ Interim Report no. 72, 67–84 (in Japanese).

  4. Ohta, A., Imai, N., Tachibana, Y., Amano, A., Itaki, T., Katayama, H. and Okai, T. (2016) Chemical composition of marine sediments in the north west of Okinoerabujima and Tokunoshima (GK14 Cruise), Japan. In: Marine Geological and Geophysical Studies around Okinawa Island —around of Amami-Oshima Islands— (ed. Itaki, T.), GSJ Interim Report no. 70, 88–98 (in Japanese).

  5. Ohta, A., Imai, N., Tachibana, Y., Amano, A., Itaki, T., and Okai, T. (2015) Chemical composition of manganese coated pumices around the Ioutori-shima Island. In: Marine Geological and Geophisical Studies East China Sea and Okinawa Trough —around of Amami-oshima, Tokuno-shima and Okinoerabu-jima Islands— (ed. Itaki, T.), GSJ Interim Report no. 67, 89–91 (in Japanese).

  6. Ohta, A., Imai, N., Tachibana, Y., Amano, A., Itaki, T., Arai, K., Ikehara, K. and Okai, T. (2013) Chemical composition of marine sediments around Okinoerabu Island, Japan. In: Marine Geological and Geophisical Studies East China Sea and Okinawa Trough —Off Okino-Erabu Island— (ed. Arai, K.), GSJ Interim Report no. 61, 99–107 (in Japanese).

  7. Ohta, A., Imai, N., Tachibana, Y., Amano, A., Arai, K., Ikehara, K. and Okai, T. (2012) Chemical composition of marine sediments in the northern part of the Okinawa trough, Japan. In: Marine Geological and Geophisical Studies East China Sea and Okinawa Trough —Nothern Okinawa Trouhgh— (ed. Arai, K.), GSJ Interim Report no. 58, 112–116 (in Japanese).

  8. Ohta, A., Imai, N., Tachibana, Y., Itaki, T., Arai, K., Katayama, H. and Ikehara, K.(2011) Chemical composition of marine sediments around Okinawa Island, Japan. In: Marine Geological and Geophisical Studies around Okinawa Islands —western off of Okinawa Island— (ed. Arai, K.), GSJ Interim Report no. 55, 124–136 (in Japanese).

  9. Ohta, A., Terashima, S., Imai, N., Tachibana, Y., Itaki, T., Arai, K., Katayama, H. and Ikehara, K.(2010) Chemical composition of marine sediments from the off western Okinawa Island, Japan. In: Marine Geological and Geophisical Studies around Okinawa Islands —northwestern off of Okinawa Island— (ed. Arai, K.), GSJ Interim Report no. 51, 103–115 (in Japanese).

  10. Terashima, S., Itaki, T., Katayama, H., Ikehara, K., Imai, N. and Ohta, A. (2009) Chemical composition of marine sediments from the off southeastern Okinawa Island, Japan. In: Marine Geological and Geophisical Studies around Okinawa Islands —eastern off of Okinawa Island— (ed. Arai, K.), GSJ Interim Report no. 46, 99–106 (in Japanese).

  11. Ohta, A., Terashima, S., Imai, N., Ikehara, K., Noda, A. and Katayama, K. (2005) The Geochemistry of coastal marine sediments off Nemuro and Hidaka area. In: Marine Geological and Geophysical Study on the Collision Zone of Kurile and Northern Japan Arcs —Off Nemuro and Hidaka areas— (ed. Katayama, H.),GSJ Interim Report no. 33, 147–162 (in Japanese).

  12. Terashima, S., Ohta, A., Imai, N., Ikehara, K., Noda, A. and Katayama, K. (2004) The Geochemistry of coastal marine sediments off southeastern Hokkaido. In: Marine Geological and Geophysical Study on the Collision Zone of Kurile and Northern Japan Arcs —Off Kushiro and Hidaka areas— (ed. Katayama, H.), GSJ Interim Report no. 30, 130–144 (in Japanese).

  13. Terashima, S., Ohta, A., Imai, N., Ikehara, K., Noda, A. and Katayama, K. (2003) The Geochemistry of coastal marine sediments off the Tokachi area. In: Marine Geological and Geophysical Study on the Collision Zone of Kurile and Northern Japan Arcs —off Tokachi area— (ed. Okamura, N.), GSJ Interim Report no. 26, 78–91 (in Japanese).

  14. Terashima, S., Ohta, A., Imai, N., Ikehara, K., Noda, A. and Katayama, K. (2002) The Geochemistry of heavy metals in coastal marine sediments on the Okhotsk Sea. In: Marine Geological and Geophysical Study on the Collision Zone of Kurile and Northern Japan Arcs —In the Areas of Okhotsk Sea and Off-Tokai— (ed. Ikehara, K.), GSJ Interim Report no. 25, 99–114 (in Japanese).

  15. Terashima, S., Ohta, A., Imai, N., Ikehara, K., Noda, A. and Katayama, K. (2001) The Geochemistry of heavy metals in coastal marine sediments from the off Northern Hokkaido. In: Marine Geological and Geophysical Study on the Collision Zone of Kurile and Northern Japan Arcs AND Study on Evaluation of Marine Active Faults —In the Areas of Okhotsk Sea and Off-Tokai— (eds. Kishimoto, K. and Ikehara, K.) GSJ Interim Report no. Mg/01/1, 91–106 (in Japanese).

 

Analytical chemistry

Bulletin

  1.  Nakamura, A., Kubota, R. and Ohta A. (2023) Multi-element analysis of geological high-matrix samples using ICP-MS equipped with integrated sample introduction and aerosol dilution systems. Geol. Surv. Japan, 74(2), 71–85. [doi: 10.9795/bullgsj.74.2_71]*

 

*The service is provided by Japan Science and Technology Information Aggregator, Electronic (J-STAGE)