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SEASONAL WAVE CHARACTERISTICS IN SOUTHERN BALI WATERS IN 2014
Wahyu Setyo Kuntoro1, Nining Sari Ningsih2*, and Rima Rachmayani2

1)Study Program of Oceanography, Faculty of Earth Sciences and Technology, Bandung Institute of Technology
2)Research Group of Oceanography, Faculty of Earth Sciences and Technology, Bandung Institute of Technology
*Corresponding author: nining[at]fitb.itb.ac.id


Abstract

Seasonal characteristics of wave height in Southern Bali waters in 2014 was simulated using SWAN (Simulating Wave Nearshore) model with the resolution of 1/216° (0.51 km). The model was forced using Cross Calibrated Multi Purposed (CCMP) wind data with resolution 1/4° (27.75 km) and 1/600° (0.18 km) bathymetry data derived from Batimetri Nasional (BATNAS) provided by Geospatial Information Agency (BIG). The result shows that the highest (lowest) seasonal average of Significant Wave Height (SWH) in Southern Bali waters (SBW) in 2014 during east (west) monsoon or JJA (DJF) on June-July-August (December-January-February) months was about 2.2 m (1.4 m). Meanwhile, SWH during the first (second) transitional monsoon or MAM (SON) on March-April-March (September-October-November) months was about 1.7 m (2.1 m). The 2D spectrum analysis exhibits that seasonal wave characteristic in Southern Bali waters (SBW) was dominated by swell propagation from the Indian Ocean (IO). Corresponding to the SWH, seasonal average of wave energy spectrum during east monsoon (JJA) shows that the highest value is up to 0.0038 m2s/deg compared to the other seasons.

Keywords: Wave height, SWAN (Simulating Wave Nearshore), Southern Bali, seasonal characteristics

Topic: Coastal and Ocean Dynamics

Link: https://ifory.id/abstract/XD4LAhQV9Czx

Conference: The 2nd International Conference on Maritime Sciences and Technology (MSAT 2019)

Plain Format | Corresponding Author (Wahyu Setyo Kuntoro)

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