RIP CURRENTS SIGNATURES ZONE DETECTION ON ALOS PALSAR IMAGE AT PARANGTRITIS BEACH, INDONESIA

https://doi.org/10.22146/ijg.2387

Arry Retnowati(1*), Muh Aris Marfai(2), J.T. Sri Sumantyo(3)

(1) 
(2) 
(3) 
(*) Corresponding Author

Abstract


Having bay and gulf morphology as cresentic beach, Parangtritis coast has been known potentially
threat by rip currents hazard. This study aims to identify and detect breaking waves
region and surf zone on ALOS PALSAR images, and identify and extract the cove shape
shoreline morphology of Parangtritis beach. ALOS PALSAR Fine Beam Single (FBS) HH polarization
acquired on 2nd May 2007 and 17th June 2007, off nadir angle 34.3º, and in descending
mode level 1.0 were utilized to derive amplitude information using Sigmasar. Shoreline
morphology detection showed that the cusps system has not changed much during May to
June 2007 when PALSAR images acquired, but might have shifted individually. The use of
optical sensor with the same spatial resolution, ALOS AVNIR-2, supports to distinguish the
boundary and determine the shoreline morphology of Parangtritis beach.


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DOI: https://doi.org/10.22146/ijg.2387

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Accredited Journal, Based on Decree of the Minister of Research, Technology and Higher Education, Republic of Indonesia Number 30/E/KPT/2018, Vol 50 No 1 the Year 2018 - Vol 54 No 2 the Year 2022

ISSN 2354-9114 (online), ISSN 0024-9521 (print)

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