%0 Book Section
%9 OS CH : Chapitres d'ouvrages scientifiques
%A Petit, Didier
%A Cotel, Pascal
%A Nugroho, D.
%T The seasonal variations of salinity in the Java Sea
%B Proceedings of acoustics seminar AKUSTIKAN 2
%C Luxembourg (LUX) ; Jakarta (IDN) ; Paris
%D 1997
%E Petit, Didier
%E Cotel, Pascal
%E Nugroho, D.
%L fdi:010017247
%G ENG
%I Union Européenne ; CRIFI ; ORSTOM
%@ 979-8186-64-8
%K EAU DE MER ; SALINITE ; PROFIL VERTICAL ; VARIATION SPATIALE ; VARIATION SAISONNIERE ; CLIMAT ; VENT
%K MOUSSON
%K INDONESIE
%K MER DE JAVA
%P 29-42
%U https://www.documentation.ird.fr/hor/fdi:010017247
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_7/carton01/010017247.pdf
%W Horizon (IRD)
%X The climate in the Javanese basin is a monsoon regime : dry from June to September and humid from November to March. In regions seasonally subject to substantial precipitation, salinity is one of the more important factors affecting the distribution and abundance of fauna. For this reason, stationary vertical profiles have been performed to measure the variations of salinity. These measurements took place during the acoustic surveys carried out in the Java Sea in the framework of the PELFISH Project. Two surveys covering the central part, the first one in October, the second one in February, supply spatial and bathymetric localization of different water masses. Other transects, from Semarang (Central Java) to the Matasiri Islands, all along the north coast of Java, towards the China Sea and on the Kalimantan continental shelf, complete the information. Three factors seem to control the seasonal dynamics of the waters : the local precipitation systems, the direction of the winds, and the disymetric topography of the basin. In the dry season (south-eastern winds), desalinization starts in the North which is less deep. Its progression to the South is made by vertical mixing. In wet season (north-western winds), it is also in the North that the desalinization begins, leading to a temporary inversion of the salinity gradient. The latter will then be restored after the front of precipitation has moved southwards. The return to the dry season leads to a homogenization of salinity. Inter-annual climatic variations seem important and make difficult to have an interpretation based on localized observations in time and space. There is an annual longitudinal gradient where the western part being more steady in salinity than the eastern one, but there is also a latitudinal dissymetry induced by the bathymetry and the northern origin of desalinization. (Résumé d'auteur)
%B AKUSTIKAN : Seminar
%8 1996/05/27-29
%$ 032MILPHY