List of Major Publications as of January 2016.


56) Thoppil, P. G.,  E. J. Metzger, H. E. Hurlburt, O. M. Smedstad, and H. Ichikawa (2016):

The current system east of the Ryukyu Islands as revealed by a global ocean reanalysis.

Progress in Oceanography, Vol. 141, 239-258. DOI 10.1016/j.pocean.2015.12.013. (Published in February  2016)

55) Nagano, A., K. Uehara, T. Suga, Y. Kawai, H. Ichikawa, and M. F. Cronin (2014):

Origin of near-surface high-salinity water observed in the Kuroshio Extension region.

J. Oceanography, DOI 10.1007/s10872-014-0237-5 (Published in June  2014)

54) Nagano, A., K. Ichikawa, H. Ichikawa, M. Konda, and K. Murakami (2013):

Volume transports proceeding to the Kuroshio Extension region and recirculating in the Shikoku Basin. J. Oceanography. Vol.69, No.3, 285-293. DOI 10.1007/s10872-013-0173-9 (Published in June 2013)

53) Nagano, A., K. Ichikawa, H. Ichikawa, Y. Yoshikawa, and K. Murakami (2013):

Large ageostrophic currents in the abyssal layer southeast of Kyushu, Japan, by direct measurement of LADCP. J. Oceanography. Vol.69, No.2, 259-268. DOI 10.1007/s10872-013-0170-z (Published in April 2013)

52) Nagano, A., K. Ichikawa, H. Ichikawa, Y. Yoshikawa, M. Konda, and K. Murakami (2013):

Subsurface current structures east of the Amami-Oshima Island based on LADCP observation. J. Advanced Marine Science and Technology Society, Vol.18, No.2, 19-26. (Published on 29 March, 2013)

51) Cronin, M. F., N. A. Bond, J. T. Farrar, H. Ichikawa, S. R. Jayne, Y. Kawai, M. Konda, B. Qiu, L. Rainville, and  H. Tomita (2013):

Formation and erosion of the seasonal thermocline in the Kuroshio Extension Recirculation Gyre. Deep-Sea Res. II, Vol.85 (a special issue: Modern Physical Oceanography and Professor H.T. Rossby, edited by Stephen Riser and Amy Bower), 62-74. (Published in January 2013)

50) Tracey, K. L., D. R. Watts, K. A. Donahue, and H. Ichikawa (2012):

Propagation of Kuroshio Extension Meanders between 143º and 149ºE. J. Physical Oceanography, Vol.42, 581-601. DOI: 10.1175/JPO-D-11-0138.1 (Published in April 2012)

49) Nagano, A., H. Ichikawa, Y. Yoshikawa, S. Kizu, and K. Hanawa (2012):

Variation of the southward interior flow of the North Pacific subtropical gyre, as revealed by a repeat hydrographic survey. J. Oceanography, Vol.68, 361–368. DOI 10.1007/s10872-012-0102-3 (Published online: 18 February 2012)

48) Bond, N. A., M. F. Cronin, C. Sabine, Y. Kawai, H. Ichikawa, P. Freitag, K. Ronnholm (2011):

Upper ocean response to Typhoon Choi-Wan as measured by the Kuroshio Extension Observatory mooring. J. Geophys. Res., Vol. 116, No. C2, C02031 (Published online on 22 February 2011)

47) Cronin, M. F., N. Bond, J. Booth, H. Ichikawa, T. M. Joyce, K. Kelly, M. Kubota, B. Qiu, C. Reason, M. Rouault, C. Sabine, T. Saino, J. Small, T. Suga, L. D. Talley, L. Thompson, R. A. Weller (2010):

Monitoring ocean-atmosphere interactions in western boundary current extensions. in Proceedings of OceanObs’09: Sustained Ocean Observations and Information for Society (Vol. 2), Venice, Italy, 21-25 September 2009, Hall, J., Harrison, D.E. & Stammer, D., Eds., ESA Publication WPP-306, pp. 217-227.

46) Ichikawa, H., A. Nagano, and K. Ichikawa (2010):

Annual Signal Modulation of the Kuroshio Through-flow Volume Transport South of Japan Leading West Pacific Pattern. in Proceedings of OceanObs'09: Sustained Ocean Observations and Information for Society (Annex), Venice, Italy, 21-25 September 2009, Hall, J., Harrison, D.E. & Stammer, D., Eds., ESA Publication WPP-306. doi:10.5270/OceanObs09, 2010.

45) Konda, M., H. Ichikawa, H. Tomita, and M. F. Cronin (2010):

Surface heat flux variations across the Kuroshio Extension as observed by surface flux buoys. J. Climate, Vol. 23:19, 5206-5221. DOI: 10.1175/2010JCLI3391.1 (Published online on 1 Nov. 2010)

44) Nagano, A., K. Ichikawa, H. Ichikawa, H. Tomita, H. Tokinaga, and  M.  Konda (2010):

Stable volume and heat transports of the North Pacific subtropical gyre revealed by identifying the Kuroshio in synoptic hydrography south of Japan. J. Geophys. Res., Vol. 115, C09002, 14 PP., (Published on 2 Sept. 2010)

43) Tomita, H., M. Kubota, M. F. Cronin, S. Iwasaki, M. Konda, and H. Ichikawa (2010):

An assessment of surface heat fluxes from J-OFURO2 at the KEO and JKEO sites. J. Geophys. Res., Vol. 115, No. C3, C03018, (Published on 17 March 2010)

42) Tokinaga H., Y. Tanimoto, S.-P. Xie, T. Sampe, H. Tomita, and H. Ichikawa (2009):

Ocean frontal effects on the vertical development of clouds over the Northwest Pacific: In situ and satellite observations. J. Climate. 22, 4241-4260. DOI: 10.1175/2009JCLI2763.1 (Published in August 2009)

41) Nagano, A., K. Ichikawa, H. Ichikawa, M. Konda, and K. Murakami (2009):

Synoptic flow structures in the confluence region of the Kuroshio and the Ryukyu Current. J. Geophys. Res., Vol. 114, No. C6, C06007 (Published on 09 June 2009)

40) Konda, M., H. Ichikawa, and H. Tomita (2009):

Wind speed and latent heat flux retrieved by simultaneous observation of multiple geophysical parameters by AMSR-E. J. Remote Sens. Soc. Japan. 29 (1), 191-198. (Published on Jan. 31, 2009)

39) Andres, M., J.-H. Park, M. Wimbush, X.-H. Zhu, K.-I. Chang, and H. Ichikawa (2008):

Study of the Kuroshio/Ryukyu Current system based on satellite-altimeter and in situ measurements. J. Oceanography, 64 (6), 937-950. (Published on December 1, 2008)

38) Cronin, M. F., C. Meinig, C. L. Sabine, H. Ichikawa, and H. Tomita (2008):

Surface Mooring Network in the Kuroshio Extension. IEEE Systems Journal, 2 (3), 424-430, doi:10.1109/JSYST.2008.925982. (Published on September 17, 2008).

37) Nakamura, H.,  A. Nishina, H. Ichikawa, M. Nonaka, and  H. Sasaki (2008):

Deep countercurrent beneath the Kuroshio in the Okinawa Trough. J. Geophys. Res., 113, C06030, doi:10.1029/2007JC004574. (Published on June 28, 2008)

36) Kakinoki, K., S. Imawaki, H. Uchida, H. Nakamura, K. Ichikawa, S. Umatani, A. Nishina, H. Ichikawa, and M. Wimbush (2008):

Variations of Kuroshio Geostrophic Transport South of Japan Estimated from Long-Term IES Observations. J. Oceanography, 64(3), 373-384, 2008. (Published on June 1, 2008)

35) Andres, M., M. Wimbush, J. -H. Park, K. –I. Chang, B. –H. Lim, D. R. Watts, H. Ichikawa, and W. J. Teague (2008):

Observations of Kuroshio flow variations in the East China Sea. J. Geophys. Res., 113, C05013, doi:10.1029/2007JC004200. (Published on May 10, 2008)

34) Nagano, A., H. Ichikawa, T. Miura, K. Ichikawa, M. Konda, Y. Yoshikawa, K. Obama, and K. Murakami (2008):

Reply to comment by Zhu et al. on “Current system east of the Ryukyu Islands”. J. Geophys. Res., 113, C03021, doi:10.1029/2007/JC004561. (Published on March 19, 2008)

33) Nagano, A., H. Ichikawa, T. Miura, K. Ichikawa, M. Konda, Y. Yoshikawa, K. Obama, and K. Murakami (2007):

Current system east of the Ryukyu Islands. J. Geophys. Res., 112, C06009, doi:10.1029/2006JC003917.

32) Nakamura, H., H. Ichikawa,  and A. Nishina (2007):

Numerical study of the dynamics of the Ryukyu Current System. J. Geophys. Res., 112, C04016, doi:10.1029/2006JC003595

31) Nakamura, H., T. Yamashiro, A. Nishina, and H. Ichikawa (2006):

Time-frequency variability of Kuroshio meanders in Tokara Strait. Geophys. Res. Lett., 33, L21605, doi:10.1029/2006GL027516.

30) Konda, M., H. Ichikawa, I.-S. Han, X.-H. Zhu, and K. Ichikawa (2005):

Variability of current structure due to the meso-scale eddies on the bottom slope souheast of Okinawa Island. J. Oceanography, Vol.61(6), 1089-1099.

29) Takikawa, T., H. Ichikawa, K. Ichikawa, and S. Kawae (2005):

Extraordinary subsurface mesoscale eddy detected in the southeast of Okinawa in February 2002. Geophys. Res. Lett., Vol.32(17), L17602, doi: 10.1029/2005GL023842.  (Selected to be one of the AGU Journal Highlights on Oct. 6, 2005)

28) Zhu, X.-H., H. Ichikawa, K. Ichikawa, and K. Takeuchi (2004):

Variability of the volume transport southeast of Okinawa Island estimated from satellite altimeter data. J. Oceanography, Vol.60(6), 953-962.

27) Kamachi, M., T. Kuragano, H. Ichikawa, H. Nakamura, A. Nishina, A. Isobe, D. Ambe, M. Arai, N. Gohda, S. Sugimoto, K. Yoshita, T. Sakurai, and F. Uboldi (2004):

Operational data assimilation system for the Kuroshio south of Japan: Reanalysis and validation. J. Oceanography, Vol.60(2), 303-312.

26) Ichikawa, H., H. Nakamura, A. Nishina, and M. Higashi (2004):

Variability of Northeastward Current Southeast of Northern Ryukyu Islands. J. Oceanography, Vol.60(2), 351-363.

(Awarded the Hidaka Prize for one of the most excellent papers published in 2003 and 2004 by Oceanographic Soc. Japan on April 1, 2006 )

25) Nakamura, H., H. Ichikawa, A. Nishina, and H.-J. Lie (2003):

Kuroshio path meander between the continental slope and the Tokara Strait in the East China Sea. J. Geophys. Res., 108(C11), 3360, doi: 10.1029/2002JC001450.

24) Zhu, X.-H., I.-S. Han, J.-H. Park, H. Ichikawa, K. Murakami, A. Kaneko and A. Ostrovskii (2003):

The Northeastward Current Southeast of Okinawa Island Observed During November 2000 to August 2001. Geophysical Res. Letts, Vol.30, No. 2, 1071, doi:10.1029/2002GL015867

23) Book, J. W., M. Wimbush, S. Imawaki, H. Ichikawa, H. Uchida, and H. Kinoshita (2002):

Kuroshio temporal and spatial variations south of Japan determined from inverted echo sounder measurements, Journal of Geophysical Res., Vol.107(C9), 10.1029/2001JC000795

22) Ichikawa, H.,  and R. C. Beardsley (2002):

The Current system in the Yellow and East China Seas, J. Oceanography, Vol.58(1) , 77-92

21) Imawaki, S., H. Uchida, H. Ichikawa, M. Fukasawa, S. Umatani, and the ASUKA Group (2001):

Satellite altimeter monitoring the Kuroshio transport south of Japan, Geophysical Research Letters, Vol. 28(1), 17-20

20) Ichikawa, H., H. Nakamura and A. Nishina (2000):

Strong northeastward current outside of the East China Sea, Proceedings PORSEC 2000 (The fifth Pacific Ocean Remote Sensing Conference, December 5-8, 2000, Goa, India) , Vol.1, 284-288.

19) Ichikawa, H., and M. Chaen (2000):

Seasonal variation of heat and freshwater transports by the Kuroshio in the East China Sea, Journal of Marine Systems, Vol.24, 119-129.

18) Ichikawa, H., S. Imawaki, H. Uchida, S. Umatani, and M. Fukasawa (1999):

Mean Values of Volume and Temperature Transports of the Kuroshio South of Japan in 1993-1995, in "Proceedings of the Fourth International Scientific Symposium, Role of Ocean Sciences for Sustainable Development, (UNESCO/IOC/WESTPAC), 2-7 February 1998, Okinawa, Japan", 22-31.

17) James, C., M. Wimbush, and H. Ichikawa (1999):

Kuroshio Meanders in the East China Sea, Journal of Physical Oceanography, 29, 259-272.

16) Maeda, A., K. Uejima, T. Yamashiro, M. Sakurai, H. Ichikawa, M. Chaen, K. Taira, and S. Mizuno (1996):

Near inertial motion excited by wind change in a margin of the Typhoon 9019, J. Oceanography, 52, 375-388.

15) Hsueh, Y., H-J. Lie, and H. Ichikawa (1996):

On the Branching of the Kuroshio West of Kyushu, J. Geophysical Research, 101(C2), 3851-3857.

14) Ichikawa, H., H. Mori, A. Nadai. and Y. Ohno (1995):

Measurement of sea surface current field using HF ocean Radar, J. Visualization Soc. Japan, 15(Suppl. No.2), 125-128. (in Japanese with English abstract and figure captions)

13) Yuan, Y., J. Su, Z. Pan, H. Chen, H. Ichikawa, S. Imawaki, K. Kawakate, K. Takano, and S. Umatani (1995):

The western boundary current east of the Ryukyu Islands, La mer, 33(1), 1-11.

12) Yuan, Y., K. Takano, Z. Pan, J. Su, K. Kawakate, S. Imawaki, H. Yu, M. Chen, H. Ichikawa, and S. Umatani (1994):

The Kuroshio in the East China Sea and the currents east of Ryukyu Islands during autumn 1991, La mer, 32(4), 235-244.

11) Ichikawa, H., and R.C. Beardsley (1993):

Temporal and Spatial Variability of Volume Transport of the Kuroshio in the East China Sea, Deep-Sea Res., 40(3), 583-605. http:/

10) Ichikawa, H., K. Nishimura, and M. Chaen (1992):

Sea Surface Temperature Difference Between NOAA/AVHRR and in situ Observation, in "PORSEC-'92 in OKINAWA, Conference for Pacific Ocean Enviroments & Probing, Proceedings, 25-31 August 1992, Okinawa, Japan", Vol.2, 808-813.

9) Ichikawa, H., and M. Chaen (1990):

The Current Field Near a Small-scale Oceanic Front, in "Physics of Shallow Seas" (ed. Wang Huatong et al.), China Ocean Press, pp.259-271.

8) Taira, K., S. Kitagawa, K. Uehara, H. Ichikawa, H. Hachiya, and T. Teramoto (1990):

Direct Measurements of Mid-depth Circulation in the Shikoku Basin by Tracking SOFAR Floats, J. Oceanogr. Soc. Japan, 46(6), 296-306.

7) Kikukawa, H., and H. Ichikawa (1990):

A Numerical Study of a Tide With Four Harmonic Constituents at the Open Boundary, J. Oceanogr. Soc. Japan, 46(4), 143-155.

6) Yamashiro, T.,  A. Maeda, and H. Ichikawa (1988):

M2 Tidal Currents Near the Continental Shelf Margin in the East China Sea, Prog. Oceanogr., 21, 431-440.

5) Kikukawa, H., and H. Ichikawa (1984):

An Improved Explicit Finite Element Method for Tidal Flow, Int. J. Numer. Method Engineer., 20, 1461-1475.

4) Ichikawa, H. (1978):

The Energy Balance in the Wind-wave Spectrum, J. Oceanogr. Soc. Japan, 34, 129-139.

3) Ichikawa, H. (1978):

A Model on the Turbulent Wind Field over Wind-waves in Curvilinear Co-ordinates, J. Oceanogr. Soc. Japan, 34, 117-128.

2) Imasato, N., and H. Ichikawa (1977):

Nonlinearity of the Horizontal Velocity Field under Wind-waves, J. Oceanogr, Soc. Japan, 33, 61-66.

1) Ichikawa, H., and N. Imasato (1976):

The Wind Field over Wind-waves, J. Oceanogr. Soc. Japan, 32, 271-283.