DOI QR코드

DOI QR Code

Dissolved Oxygen at the Bottom Boundary Layer of the Ulleung Basin, East Sea

동해 울릉분지 해저 경계면의 용존산소

  • Kang, Dong-Jin (Marine Instrument Service and Calibration Department, KORDI) ;
  • Kim, Yun-Bae (Ocean Science & Technology Institute Pohang University of Science and Technology) ;
  • Kim, Kyung-Ryul (School of Earth and Environmental Sciences/Research Institute of Oceanography Seoul National University)
  • 강동진 (한국해양연구원 기기 검.교정 분석센터) ;
  • 김윤배 (포항공과대학교 해양대학원) ;
  • 김경렬 (서울대학교 지구환경과학부(BK21)/해양연구소)
  • Received : 2010.08.11
  • Accepted : 2010.10.22
  • Published : 2010.12.30

Abstract

General consensus on typical vertical profile of dissolved oxygen in the Ulleung Basin is that dissolved oxygen concentration beyond 300 m decreases with increasing depth. However, the results of our observations in 2005 and 2006 revealed three different dissolved oxygen distribution types in the deep layer of the Ulleung Basin. The first type showed oxygen concentration decreasing with increasing depth (Type-1), the second showed oxygen concentration decreasing very sharply near the bottom boundary layer but constant in the bottom adiabatic layer (Type-2), the final was of the oxygen minimum layer above the bottom boundary layer (Type-3). Type-2 was the most common pattern in the Ulleung Basin. Type-1 was most common close to the Japan Basin, including the Ulleung Interplane Gap, while Type-3 was found around Dok do. Oxygen Consumption Rate (OCR) at surface sediment estimated using the dissolved oxygen distribution at the bottom boundary layer was $0.2{\sim}5.8\;mmol{\cdot}m^{-2}d^{-1}$, which coincided with OCR from direct sediment incubation. This implies that organic matter decomposition at surface sediment may play an important role in dissolved oxygen distribution patterns at the bottom boundary layer of the Ulleung Basin.

Acknowledgement

Supported by : 학술진흥재단

References

  1. 김일남, 민동하, 이동섭 (2010) 동해 각 분지의 수층내 산소 소모율 추정. 한국해양학회지 "바다" 15(2):86-96
  2. 이동섭, 김일남, 강동진, 김동선 (2007) 울릉 분지 저층수의 아질산염. 한국해양학회지 "바다" 12(3):239-243
  3. 이재성, 박경수, 강범주, 김영태, 배재현, 김성수, 박정준, 최옥인 (2010a) 저층 경계면 연구용 Benthic chamber (BelcI) 개발. 한국해양학회지 "바다" 15(1):41-50
  4. 이태희, 김동선, 김부근, 최동림 (2010b) 동해 울릉분지 퇴적물에서 유기탄소 순환. Ocean and Polar Res 32(2):145-156 https://doi.org/10.4217/OPR.2010.32.2.145
  5. 정진현, 김동선, 이태희, 안순모 (2009) 동해 독도 사면 퇴적물의 높은 재광물화와 탈질소화. 한국해양학회지 "바다" 14(2):80-89
  6. 최유정, 김동선, 이태희, 이창복 (2009) 동해 울릉분지 퇴적물에서 망간산화물과 철산화물 환원율 추정. 한국해양학회지 "바다" 14(3):127-133
  7. Chen CTA, Bychkov AS, Wang SL, Pavlova GY (1999) An anoxic Sea of Japan by the Year 2200? Mar Chem 67:249-265 https://doi.org/10.1016/S0304-4203(99)00074-2
  8. Gamo T, Nozaki Y, Sakai H, Nakai T, Tsubota, H (1986) Spacial and temporal variations of water characteristics in the Japan Sea bottom layer. J Mar Res 44:781-793 https://doi.org/10.1357/002224086788401620
  9. Gamo T, Momoshima N, Tolmachyov S (2001) Recent upward shift of the deep convection system in the Japan Sea, as inferred from the geochemical tracers tritium, oxygen, and nutrients. Geophys Res Lett 28:4143-4146 https://doi.org/10.1029/2001GL013367
  10. Hahm D, Kim KR (2008) Observation of bottom water renewal and export production in the Japan Basin, East Sea using tritium and helium isotopes. Ocean Sci J 43:39-48 https://doi.org/10.1007/BF03022430
  11. Kang DJ, Kim JY, Lee T, Kim KR (2004) Will the East/ Japan Sea become an anoxic sea in the next century? Mar Chem 91:77-84 https://doi.org/10.1016/j.marchem.2004.03.020
  12. Kim KR, Kim K (1996) What is happening in the East Sea (Japan Sea)?: Recent chemical observation during CREAMS 93-96, J Korean Soc Oceanogr 31:164-172
  13. Kim KR, Kim K, Kang DJ, Park SY, Park MK, Kim YG, Min HS, Min D (1999) The East Sea (Japan Sea) in change: A story of dissolved oxygen. MTS J 33(1):15- 22 https://doi.org/10.4031/MTSJ.33.1.3
  14. KORDI (2003) Marine Ecosystem responses to climate variability in the East Sea. KORDI, BSPE825-00-1495-3, 498 p
  15. Kumamoto Y, Yoneda M, Shibata Y, Kume H, Tanaka A, Uehiro T, Morita M, Shitashima K (1998) Direct observation of the rapid turnover of the Japan Sea bottom water by means of AMS radiocarbon measurement. Geophys Res Lett 25:651-654 https://doi.org/10.1029/98GL00359
  16. Min DH, Warner MJ (2005) Basin-wide circulation and ventilation study in the East Sea (Sea of Japan) using chlorofluorocarbon tracers. Deep-Sea Res II 52:1580-1616 https://doi.org/10.1016/j.dsr2.2003.11.003
  17. Talley LD, Tishchenko PY, Mitchell G, Kang DJ, Min DH, Nedashkovskiy A, Masten D, Robbins P (2001) Nitrite in a deep, oxygenated environment the Japan/East Sea and Ulleung Basin. CREAMS 2001, Honolulu
  18. Talley LD, Tishchenko P, Luchin V, Nedashkovskiy A, Sagalaev S, Kang DJ, Warner M, Min SH (2004) Atlas of Japan (East) Sea hydrographic properties in summer. 1999. Prog Oceanogr 61:277-348 https://doi.org/10.1016/j.pocean.2004.06.011
  19. Tishchenko PY, Talley LD, Lobanov VB, Nedashkovskii AP, Pavlova GY, Sagalaev G (2007) The influence of geochemical processes in the near-bottom layer on the hydrochemical characteristics of the waters of the Sea of Japan. Oceanology 47(3):350-359 https://doi.org/10.1134/S0001437007030071
  20. Tsunogai S, Watanabe YW, Harada K, Watanabe S, Saito S, Nakajima M (1993) Dynamics of the Japan Sea deep water studied with chemical and radiochemical tracers. In: Teramoto T (ed) Deep Ocean Circulation, Physical and Chemical Aspects. Elsevier Science Publishers, B.V., pp 105-119
  21. Uda M (1934) The Results of simultaneous oceanographic investigations in the Japan Sea and its adjacent waters in May and June 1932. J Imperial Fishery Experimental Stations 5:57-190
  22. Watanabe YW, Watanabe S, Tsunogai S (1991) Tritium in the Japan Sea and the renewal time of the Japan Sea deep water. Mar Chem 34:97-108 https://doi.org/10.1016/0304-4203(91)90016-P
  23. Yanagi T (2002) Water, salt, phosphorus and nitrogen budgets of the Japan Sea. J Oceanogr 58:797-804 https://doi.org/10.1023/A:1022815027968

Cited by

  1. Characterization of Clastic and Organic Sediments Near Dokdo, Korea vol.26, pp.2, 2013, https://doi.org/10.9727/jmsk.2013.26.2.65