Johari Afifi, Akhir Mohd Fadzil. Exploring thermocline and water masses variability in southern South China Sea from the World Ocean Database (WOD)[J]. Acta Oceanologica Sinica, 2019, 38(1): 38-47. doi: 10.1007/s13131-019-1368-8
Citation: Johari Afifi, Akhir Mohd Fadzil. Exploring thermocline and water masses variability in southern South China Sea from the World Ocean Database (WOD)[J]. Acta Oceanologica Sinica, 2019, 38(1): 38-47. doi: 10.1007/s13131-019-1368-8

Exploring thermocline and water masses variability in southern South China Sea from the World Ocean Database (WOD)

doi: 10.1007/s13131-019-1368-8
  • Received Date: 2017-11-13
  • Study about water characteristics (temperature and salinity) from the World Ocean Database (WOD) was conducted in the area of southern South China Sea (SSCS), covering the area of 0°-10°N, 100°-117°E. From inter-annual analysis, upper layer (10 m) and deep water temperature (50 m) increased from 1951 until 2014. Monthly averaged show that May recorded the highest upper layer temperature while January recorded the lowest. It was different for the deep water which recorded the highest value in September and lowest in February. Contour plot for upper layer temperature in the study area shows presence of thermal front of cold water at southern part of Vietnam tip especially during peak northeast season (December-January). The appearances of warm water were obviously seen during generating southwest monsoon (May-June). Thermocline study revealed the deepest isothermal layer depth (ILD) during peak northeast and southwest monsoon. Temperature threshold at shallow area reach more than 0.8℃ during the transitional period. Water mass study described T-S profile based on particular region. Water mass during the southwest monsoon is typically well mixed compared to other seasons while strong separation according to location is very clear. During transitional period between northeast monsoon to southwest monsoon, the increasing of water temperature can be seen at Continental Shelf Water (CSW) which tend to be higher than 29℃ and vice versa condition during transitional period between southwest monsoon to northeast monsoon. Dispersion of T-S profile can be seen during southwest monsoon inside Tropical Surface Water (TSW) where the salinity and temperature become higher than during northeast monsoon.
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  • Abdul-Hadi A, Mansor S, Pradhan B, et al. 2013. Seasonal variability of chlorophyl-a and oceanographic conditions in Sabah waters in relation to Asian monsoon-a remote sensing study. Environmental Monitoring and Assessment, 185(5):3977-3991, doi: 10.1007/s10661-012-2843-2
    Akhir M. 2012. Surface circulation and temperature distribution of Southern South China Sea from Global Ocean Model (OCCAM). Sains Malaysiana, 41(6):701-714
    Akhir M F, Daryabor F, Husain M L, et al. 2015. Evidence of upwelling along Peninsular Malaysia during southwest monsoon. Open Journal of Marine Science, 5(3):273-279, doi: 10.4236/ojms.2015.53022
    Akhir M, Yong J. 2011. Seasonal variation of water characteristics during inter-monsoon along the east coast of Johor. Journal of Sustainability Science and Management, 6(2):206-214
    Akhir M, Zakaria N, Tangang F. 2014. Intermonsoon variation of physical characteristics and current circulation along the east coast of Peninsular malaysia. International Journal of Oceanography, 2014:527587, doi: 10.1155/2014/527587
    Amiruddin A M, Ibrahim Z Z, Ismail S A. 2011. Water mass characteristics in the strait of Malacca using Oean Data View. Research Journal of Environmental Sciences, 49-58, doi: 10.3923/rjes.2011.49.58
    Arsad S, Akhir M F. 2013. The characteristics and origin of water masses along the Sabah coast. International Journal of Research in Earth & Environmental Sciences, 1(1):35-43
    Buranapratheprat A, Luadnakrob P, Yanagi T, et al. 2016. The modification of water column conditions in the Gulf of Thailand by the influences of the South China Sea and monsoonal winds. Continental Shelf Research, 118:100-110, doi: 10.1016/j.csr.2016.02.016
    Chark L H, Shazili N A M, Uchiyama M. 1986. Vertical distribution of salinity and temperature in the south-western portion of the South China Sea. Ekspedisi Matahari, 23-28
    Daryabor F, Samah A A, Ooi S H. 2015. Dynamical structure of the sea off the east coast of Peninsular Malaysia. Ocean Dynamics, 65(1):93-106, doi: 10.1007/s10236-014-0787-5
    Haghroosta T, Ismail W R. 2017. Typhoon activity and some important parameters in the South China Sea. Weather and Climate Extremes, 17:29-35, doi: 10.1016/j.wace.2017.07.002
    Husain M L, Yaakob R, Shazili N A M. 1985. Some measurement of temperature and salinity on a portion of the South China Sea. Ekspedisi Matahari, 49-79
    Kok P H, Akhir M F, Tangang F T. 2015. Thermal frontal zone along the east coast of Peninsular Malaysia. Continental Shelf Research, 110:1-15, doi: 10.1016/j.csr.2015.09.010
    Marghany M. 2012. Intermonsoon water mass characteristics along coastal waters off Kuala Terengganu, Malaysia. International Journal of the Physical Sciences, 7(8):1294-1299, doi: 10.5897/IJPS11.1713
    Qu Tangdong, Du Yan, Gan Jianping, et al. 2007. Mean seasonal cycle of isothermal depth in the South China Sea. Journal of Geophysical Research, 112(C2):C02020
    Roseli N H, Akhir M F. 2014. Variations of Southern South China sea characteristics near pahang. Sains Malaysiana, 43(9):1389-1396
    Roseli N H, Akhir M F, Husain M L, et al. 2015. Water mass characteristics and stratification at the shallow sunda shelf of Southern South China Sea. Open Journal of Marine Science, 5(4):455-467, doi: 10.4236/ojms.2015.54036
    Saadon N, Kin L, Snidvongs A, et al. 1998. Physical Characteristics of Watermass in the South China Sea, Area 2:Sarawak, Sabah and Brunei Darussalam Waters. In:Proceedings of the Second Technical Seminar on Marine Fishery Resources Survey in the SCS, 14–15 Dec 1998. Kuala Lumpur, Malaysia, 1–22
    Seidov D, Antonov J I, Arzayus K M, et al. 2015. Oceanography north of 60°N from World Ocean Database. Progress in Oceanography, 132:153-173, doi: 10.1016/j.pocean.2014.02.003
    Tan C K, Mansor S, Ibrahim H M, et al. 2002. Studies of sea surface temperature and chlorophyll-a variation on the fishing grids using remote sensing in the east coast of Peninsular Malaysia. Pertanika Journal Science and Technology, 10(1):13-24
    Wyrtki K. 1961. Naga Report:Scientific Results of Marine Investigations of the South China Sea and the Gulf of Thailand, 1959-1961. La Jolla, California:University of California, Scripps Institution of Oceanography
    Yanagi T, Sachoemar S, Takao T, et al. 2001. Seasonal variation of stratification in the Gulf of Thailand. Journal of Oceanography, 57(4):461-470, doi: 10.1023/A:1021237721368
    Yashayaev I, Seidov D. 2015. The role of the Atlantic Water in multidecadal ocean variability in the Nordic and Barents Seas. Progress in Oceanography, 132:68-127, doi: 10.1016/j.pocean.2014.11.009
    Yanagi T, Sachoemar S, Takao T, et al. 2001. Seasonal variation of stratification in the Gulf of Thailand. Journal of Oceanography, 57(4), 461-470. doi: 10.1023/A:1021237721368
    Zainol Z, Akhir M F M. 2016a. Coastal upwelling at Terengganu and Pahang coastal waters:Interaction of hydrography, current circulation and phytoplankton biomass. Jurnal Teknologi, 78(8):11-27, doi: 10.11113/jt.v78.7402
    Zheng Lili, Wang Dongxiao, Chen Ju, et al. 2016. SCSPOD14, a South China Sea physical oceanographic dataset derived from in situ measurements during 1919-2014. Scientific Data, 3:160029, doi: 10.1038/sdata.2016.29
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