Seasonal and semi-annual variability of sea surface height in Makassar Strait

6th Asian Physics Symposium

Radjawane, I.M.^1 ; Azminuddin, F.^1

Oceanography Study Program, Faculty of Earth Sciences and Technology, Institut Teknolog Bandung Labtek XI, Jalan Ganesha 10, Bandung, FL

40132, Indonesia^1

关键词: Annual variability;    Kelvin wave propagation;    Satellite observations;    Sea surface height;    Sea-surface height anomalies;    Semiannual variation;    Signal period;    Time-series data;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/739/1/012067/pdf
DOI  :  10.1088/1742-6596/739/1/012067

来源: IOP

【 摘 要 】

Seasonal and semi-annual variability of sea surface height anomaly (SSHA) of Makassar Strait for 21 years in 1993-2013 is investigated using monthly product from several altimetry satellite observations. The time series data were obtained from AVISO and analyzed using spatial diagram and S-Transform. Results show that the monthly variation of mean SSHA increase from north to south part of the strait. The SSHA was dominantly for the 9-14 months that influenced by monsoonal system. During Northwest Monsoon the SSHA increases around 3 to 9 cm with the maximum in February in the southern part of the strait. The semiannual variation was also detected for the 5-7 months signal period and commonly occurs during transitional monsoon in April/May and November/December.This phenomenon related with Kelvin wave propagation from Lombok Strait to Makassar Strait.