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All Journal Indonesian Journal of Geography Fisheries : Jurnal Perikanan dan Ilmu Kelautan
Permatasari, Ima Nurmalia
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Social Sciences

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The Coastline Change Pattern of Gresik Beach around the Madura Strait, Indonesia Prasita, Viv Djanat; Bintoro, Rudi Siap; Permatasari, Ima Nurmalia; Widagdo, Supriyatno; Sugianto, Erik; Rosana, Nurul
Indonesian Journal of Geography Vol 55, No 3 (2023): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.80934

Abstract

The coastal region is characterized by dynamic changes in its coastline, which can be attributed to various factors. However, the main causes of change along the Gresik coast have yet to be thoroughly studied. Therefore, this research aims to examine the patterns of coastline change along the Gresik coast around the Madura Strait and the influence of wind-generated waves on them. Specifically, the study focuses on four coastal zones: Ujung Pangkah, Sidayu, Bungah, and Manyar districts. The research utilizes satellite imagery and geographic information systems (GIS) as well as methods for calculating ocean waves to analyze the coastline change patterns. The study also examines the impact of ocean wave energy on coastal abrasion and accretion. The findings revealed that the accretion rate in the study area was higher than the erosion rate. The accretion in the coastal area of Gresik is attributed to the flow of the Bengawan Solo River, which carries sediment from upstream. The accretion and abrasion areas for the entire period from 2002 to 2019 were 1063.16 ha and 425.23 ha, respectively. The study also found that the mangrove areas exhibit a higher rate of accretion than abrasion, indicating their potential as a reliable indicator of the effects of sea level rise resulting from global warming.This study revealed that the northern part of Ujung Pangkah District and Bungah District experienced the highest abrasion patterns, whereas no abrasion was observed in Sidayu District. Between 2002 and 2019, the abrasion areas in Ujung Pangkah and Bungah districts totaled 243.96 ha and 178.29 ha, respectively. Wind-generated waves were likely the primary cause of the abrasion in these areas, though other factors may also have contributed to coastline changes. It is essential to consider these factors for effective coastal management in the region.
KARAKTERISTIK TEMPERATUR PERMUKAAN LAUT DI PERAIRAN AMBON SERTA KAITANNYA ANGIN MONSUN DAN POLA CURAH HUJAN Permatasari, Ima Nurmalia; Moh. Zaini; Engki A. Kisnarti
FISHERIES Jurnal Perikanan dan Ilmu Kelautan Vol 6 No 2 (2024): Oktober
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/fisheries.v6i2.86

Abstract

Temperatur permukaan laut (TPL) merupakan variabel fisik dasar untuk memahami, mengukur, dan memprediksi interaksi antara lautan dan atmosfer. Banyak pembahasan mengenai dampak perubahan iklim yang berfokus bagaimana uap air atmosfer dan curah hujan dapat meningkat seriring dengan perubahan temperatur permukaan laut (TPL). Perubahan dalam sirkulasi atmosfer dengan skala besar, khususnya transportasi dan konvergensi kelembapan, juga dianggap penting dalam menentukan curah hujan di berbagai wilayah. Tujuan dari penelitian ini dilakukan yaitu, menganalisis hubungan fenomena iklim, seperti El Nino dan La Nina serta bagaimana variasi atau anomali temperatur permukaan laut mempengaruhi curah hujan di sutau wilayah. Metode yang digunakan mengacu pada beberapa jurnal, yaitu analisis korelasi Pearson, analisis wavelet, dan model Lasso. Hasil penelitian dari beberapa jurnal tersebut menunjukkan bahwa anomali TPL dapat memicu perubahan signifikan pada pola curah hujan di suatu wilayah. Fenomena atmosfer seperti El Nino dan La Nina memiliki dampak yang signifikan terhadap variabilitas cuaca dan curah hujan. Selain itu interaksi antara TPL  dan fenomena seperti Madden Julian oscillation (MJO) juga ditemukan memiliki pengaruh penting pada distribusi curah hujan.
Co-Authors Bintoro, Rudi Siap Engki Andri Kisnarti Moh. Zaini Nurul Rosana, Nurul Sugianto, Erik Viv Djanat Prasita Widagdo, Supriyatno