Abstract
Termocline layer is effect of the unstabliized water when its stratified and usually with temperature decrease. This Research comprehensively discussed Indonesian waters, especially at a time when ITF flows strengthened in eastern part of Indonesia as compared to the western waters of Indonesia. Therefore, it is necessary to study the changes in the depth and thickness of the thermocline in various Indonesian waters to determine the condition toward oceanographic phenomenon that occurred in Southeast Monsoon. The data used are secondary data obtained from the World Ocean Atlas the form of climatological data. The data used is the temperature (oC) monthly from year 2005 to 2012 in June-August with a spatial resolution 10. The research location is determined based on the division of zoning Regional Fisheries Management or RFM. Location research adjusted for optimize the benefits of this research in pelagic fishing effort. The method used in this research is the analysis of spatial, temporal, and literature studies about the temperature gradient changes. The result show that Thermocline layer in eastern area of Indonesia found deeper than western Indonesia. Thickness of thermocline layer in western area of Indonesia has lower thickness level rather than eastern area of Indonesia.Keywords : Thermocline, Temperature Gradient, dan South East Monsoon, ITF
Highlights
Indonesia is the ‘connector’ between Pacific Ocean and Indian Ocean (Atmadipoera et al 2009; Gordon et al, 2008; Susanto and Gordon 2005; Wijffels and Meyers 2004; Sprintall et al 2002; Koch-Larrouy et al, 2008)
There are many research about thermocline layer had been done in all over the world, especially in Indonesia, thermocline layers has been found at depth of 44,7-61,7 m and took place in Makassar strait (Yuliarinda et al, 2012), 49,7-99,4 m in Jayapura northern waters (Sidabutar et al, 2014), and 63,2269,03m in southern Java (Kunarso et al, 2012), but there is no research comprehensively discussed Indonesian waters, especially at a time when into the waters from Pacific Ocean (ITF) flows strengthened in eastern part of Indonesia as compared to the western waters of Indonesia
Determining the location of stations by oceanographic phenomena that occur in every region of the waters of Indonesia, especially while strengthening the ITF that occurred in June, July, August (JJA) to see the condition of the thermocline layer, which compared with the western part of Indonesia
Summary
Indonesia is the ‘connector’ between Pacific Ocean and Indian Ocean (Atmadipoera et al 2009; Gordon et al, 2008; Susanto and Gordon 2005; Wijffels and Meyers 2004; Sprintall et al 2002; Koch-Larrouy et al, 2008). Water mass movement that passes through the sea effecting the condition of thermocline layer (Gordon et al, 2000). Other factors that effected the thermocline layer in certain area are current, upwelling and downwelling, sun intensity, tide, wind, and global climate variability (Kunarso et al 2012; Laevastu and Hela 1970; Susanto et al, 2001; Tomzack, 2000). Thermocline layer is effect of the unstabliized water when its stratified and usually with temperature decrease. Thermocline layer is a layer where temperature rapidly decrease towards depth with temperature gradient more than 0,05°C/m (Bureau, 1992). The depth and thickness of the thermocline can be seen from temperature gradient of 0,05 0C/m in water column (Hao et al, 2012)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
