Kondisi Suhu dan Salinitas serta Korelasinya dengan Variabilitas Eddy di Perairan Halmahera dan Mindanao

Gadza B.T. Suharyo, Noir P Purba, Lintang P.S. Yuliandi, Mega L. Syamsuddin

Abstract


The purpose of this study was to determine the dynamics of the waters around Halmahera Eddy (HE) and Mindanao Eddy (ME) both horizontally and vertically. The location of the study is in the Pacific Equator Pacific Waters with embedded at 20 - 10oN and 125o-135o E. The data used were temperature and salinity downloaded from Argo Float data centre and combined with surface currents data from MyOcean. The results showed that the two eddies have different impacts on water conditions. In HE, the characteristics are shown by convergent moving mass of water, increasing surface temperature and decreasing salinity. The characteristics of eddy in these waters indicate the existence of downwelling. In ME the mass of water moves divergently, the condition of the sea surface temperature is lower and the salinity level increases. The characteristics of eddy in these waters indicate upwelling.

Keywords:
Eddies
Upwelling
Indonesia Throughflow
Argo float

ABSTRAK
Tujuan dari penelitian ini untuk mengetahui dinamika perairan di sekitar Halmahera Eddy (HE) dan Mindanao Eddy (ME) baik secara horizontal dan vertikal. Lokasi kajian berada di Perairan Pasifik Equator Barat dengan koordinat 2o LS – 10o LU dan 125o BT – 135o BT. Data yang digunakan adalah data suhu dan salinitas dari Argo Float dan data arus permukaan dari MyOcean. Hasil penelitian menunjukan bahwa kedua eddy ini memberikan dampak yang berbeda terhadap kondisi perairan. Di HE, karakteristiknya ditunjukkan dengan massa air yang bergerak secara konvergen, meningkatnya suhu di permukaan dan menurunnya kadar salinitas. Karakteristik eddy di perairan ini menunjukkan adanya downwelling. Di ME massa air bergerak secara divergen, kondisi suhu permukaan lautnya lebih rendah dan kadar salinitasnya meningkat. Karakteristik eddy di perairan ini ini menunjukkan adanya upwelling.

Kata kunci:
Eddies
Taikan air
Arus Lintas Indonesia
Argo float


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DOI: https://doi.org/10.13170/depik.9.3.15534

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