Percampuran vertikal di Perairan Laut Maluku dan Talaud pada bulan Februari 2021

Adi Purwandana; Mochamad Riza Iskandar; Edi Kusmanto; Muhammad Fadli; Priyadi Dwi Santoso; Corry Corvianawatie; Muhadjirin Muhadjirin; Marlin Chrisye Wattimena; Wang Zheng

doi:10.14203/oldi.2021.v6i2.363

Percampuran vertikal di Perairan Laut Maluku dan Talaud pada bulan Februari 2021

Adi Purwandana, Mochamad Riza Iskandar, Edi Kusmanto, Muhammad Fadli, Priyadi Dwi Santoso, Corry Corvianawatie, Muhadjirin Muhadjirin, Marlin Chrisye Wattimena, Wang Zheng

Abstract

Vertical mixing in the northern Maluku Sea and Talaud Waters in February 2021. The spatial variability of water mass mixing in the northern Maluku Sea and Talaud waters are presented based on the results of Eastern Indonesia Expedition (EIT) 2021 using RV Baruna Jaya VIII-LIPI. The turbulent kinetic energy dissipation rate was obtained using the Kunze-Williams-Briscoe (KWB) Method calculated from CTD (Conductivity, Temperature, Depth) and LADCP (Lowered Acoustic Doppler Current Profiler) datasets. We found the dissipation rate in the core layer of North Pacific Subtropical Water (NPSW) and North Pacific Intermediate Water (NPIW) are in the order of 10^-6 W/kg and 10^-8 W/kg, respectively. The KWB Method used in this study is also proven comparable with the Thorpe Method.

10.14203/oldi.2021.v6i2.363

Keywords

turbulent mixing, Indonesian throughflow (ITF), KWB Method, Thorpe Method

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References

Ferron, B., Kokoszka, F., Mercier, H., Lherminier, P., Huck, T., Rios, A., & Thierry, V. (2016). Variability of the turbulent kinetic energy dissipation along the A25 Greenland-Portugal transect repeated from 2002 to 2012. Journal of Physical Oceanography, 46(7), 1989–2003. doi: 10.1175/JPO-D-15-0186.1

Gordon, A. L. (2005). Oceanography of the Indonesian Seas and their throughflow. Oceanography, 18(4), 14–27. doi: 10.5670/oceanog.2005.18

Gordon, A. L., Susanto, R. D., Ffield, A., Huber, B. A., Pranowo, W., & Wirasantosa, S. (2008). Makassar Strait throughflow, 2004 to 2006. Geophysical Research Letters, 35(24). doi: 10.1029/2008GL036372

Kashino, Y., Watanabe, H., Herunadi, B., Aoyama, M., & Hartoyo, D. (1999). Current variability at the Pacific entrance of the Indonesian Throughflow. Journal of Geophysical Research: Oceans, 104(C5), 11021–11035. doi: 10.1029/1999JC900033

Koch-Larrouy, A., Atmadipoera, A., van Beek, P., Madec, G., Aucan, J., Lyard, F., Grelet, J., & Souhaut, M. (2015). Estimates of tidal mixing in the Indonesian archipelago from multidisciplinary INDOMIX in-situ data. Deep-Sea Research Part I: Oceanographic Research Papers, 106, 136–153. doi: 10.1016/j.dsr.2015.09.007

Kunze, E., Williams, A. J., & Briscoe, M. G. (1990). Observations of Shear and Vertical Stability From a Neutrally Buoyant Float. Journal of Geophysical Research, 95(C10), 18,217-18,142. doi: 10.1029/jc095ic10p18127

Li, X., Yuan, D., Wang, Z., Li, Y. A. O., Corvianawatie, C., Surinati, D., Sandra, A., Bayhaqi, A., Avianto, P., Kusmanto, E., Dirhamsyah, D., & Arifin, Z. (2020). Moored observations of transport and variability of halmahera sea currents. Journal of Physical Oceanography, 50(2), 471–488. doi: 10.1175/JPO-D-19-0109.1

Masumoto, Y., & Yamagata, T. (1996). Seasonal variations of the Indonesian throughflow in a general ocean circulation model. Journal of Geophysical Research, 101(C5), 12,287-12,293.

Osborn, T. R. (1980). Estimates of the Local Rate of Vertical Diffusion from Dissipation Measurements. In Journal of Physical Oceanography (Vol. 10, Issue 1, pp. 83–89). doi: 10.1175/1520-0485(1980)010<0083:EOTLRO>2.0.CO;2

Pasquet, S., Bouruet-aubertot, P., Reverdin, G., Turnherr, A., & St. Laurent, L. (2016). Deep-Sea Research I Finescale parameterizations of energy dissipation in a region of strong internal tides and sheared fl ow , the Lucky-Strike segment of the Mid-Atlantic Ridge. Deep-Sea Research Part I, 112, 79–93. doi: 10.1016/j.dsr.2015.12.016

Petrick, B., Martínez-García, A., Auer, G., Reuning, L., Auderset, A., Deik, H., Takayanagi, H., De Vleeschouwer, D., Iryu, Y., & Haug, G. H. (2019). Glacial Indonesian Throughflow weakening across the Mid-Pleistocene Climatic Transition. Scientific Reports, 9(1), 16995. doi: 10.1038/s41598-019-53382-0

Purwandana, A., Cuypers, Y., Bouruet-Aubertot, P., Nagai, T., Hibiya, T., & Atmadipoera, A. S. A. S. (2020). Spatial structure of turbulent mixing inferred from historical CTD datasets in the Indonesian seas. Progress in Oceanography, 184, 102312. doi: 10.1016/j.pocean.2020.102312

Purwandana, A., & Iskandar, M. R. (2020). Turbulent Mixing Inferred from CTD Datasets in the Western Tropical Pacific Ocean. Indonesian Journal of Marine Sciences, 25(4), 148–156.

Purwandana, A., Surinati, D., Bayhaqi, A., Azis Ismail, M. F., Corvianawatie, C., Budiman, A. S., Edikusmanto, Irianto, D., & Muhadjirin. (2020). The spatial current structure in the Indonesian Seas in November 2014, during The Expedition of Widya Nusantara (EWIN). Oseanologi Dan Limnologi Di Indonesia, 5(3), 161–170. doi: 10.14203/oldi.2020.v5i3.330

Song, Q., Gordon, A. L., & Visbeck, M. (2004). Spreading of the Indonesian throughflow in the Indian Ocean. Journal of Physical Oceanography, 34(4), 772–792. doi: 10.1175/1520-0485(2004)034<0772:SOTITI>2.0.CO;2

Sprintall, J., Gordon, A. L., Wijffels, S. E., Feng, M., Hu, S., Koch-Larrouy, A., Phillips, H., Nugroho, D., Napitu, A., Pujiana, K., Susanto, R. D., Sloyan, B., Peña-Molino, B., Yuan, D., Riama, N. F., Siswanto, S., Kuswardani, A.,

Arifin, Z., Wahyudi, A. J., … Setiawan, A. (2019). Detecting Change in the Indonesian Seas . In Frontiers in Marine Science (Vol. 6, p. 257). Retrieved from https://www.frontiersin.org/article/10.3389/fmars.2019.00257

Susanto, R. D., Wei, Z., Adi, R. T., Fan, B., Li, S., & Fang, G. (2013). Observations of the Karimata Strait througflow from December 2007 to November 2008. Acta Oceanologica Sinica, 32(5), 1–6. doi: 10.1007/s13131-013-0307-3

Tan, S., Pratt, L. J., Yuan, D., Li, X., Wang, Z., Li, Y., Corvianawatie, C., Surinati, D., Sandra, A., & Bayhaqi, A. (2020). Hydraulics and mixing of the deep overflow in the Lifamatola Passage of the Indonesian seas. Journal of Physical Oceanography, 1–52. doi: 10.1175/JPO-D-19-0326.1

Yuan, D., Li, X., Wang, Z., Li, Y., Wang, J., Yang, Y., Hu, X., Tan, S., Zhou, H., Wardana, A. K. A. K., Surinati, D., Purwandana, A., Ismail, M. F. A., Avianto, P., Dirhamsyah, D., Arifin, Z., Von Storch, J.-S., Azis Ismail, M. F., Avianto, P., … Storch, J.-S. von. (2018). Observed transport variations in the Maluku Channel of the Indonesian seas associated with western boundary current changes. Journal of Physical Oceanography, 48(8), 1803–1813. doi: 10.1175/JPO-D-17-0120.1

Zhang, T., Wang, W., Xie, Q., & Chen, L. (2019). Heat contribution of the Indonesian throughflow to the Indian Ocean. Acta Oceanologica Sinica, 38(4), 72–79. doi: 10.1007/s13131-019-1414-6