PERUBAHAN ELEVASI MUKA AIR LAUT DI PERAIRAN INDONESIA PADA KEJADIAN SIKLON TROPIS TAHUN 2015

• Main Author: Mazaya, Hatfidian
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/40406
• Institution: Institut Teknologi Bandung

This study examines changes in sea level at tropical cyclone events that occur in North Indonesia in 2015. In this study used observation data from 5 tidal stasions from the Geospatial Information Agency (BIG), wind and atmospheric data from the European Center for Medium-Range Weather (ECMWF). Separation of astronomical and non-astronomical tidal elevations using the harmonic analysis T_TIDE program. Calculation of sea level change from the pressure difference using the inverted barometer effect method and from wind data using wind setup method. The results showed residual water level from BIG data and effect of Linfa Tropical Cyclone in July 2015 reached Natuna and Pemangkat Waters with residual elevation as high as 8 and 3,2 cm. The effect of Vamco Tropical Cyclone in September 2015 reaches Natuna and Pemangkat Waters with residual elevation as high as 7,3 and 1,2 cm. The effect of Dujuan Tropical Cyclone in September 2015 reachs all stasions, with residual elevations in Natuna waters as high as 11,6 cm, Pemangkat waters as high as 13,6 cm, Belitung waters as high as 12,1 cm, and Sunda Kelapa waters as high as 7,7 cm. The Effect of Mujigae Tropical Cyclones in October 2015 only reaches Natuna Waters with residues as high as 11,3 cm. The intensity of tropical cyclones will affect the residual elevation and impact area, the greater the tropical cyclone the greater the residual elevation and the impact area.