Electronic Theses and Dissertation

Kekeringan disebabkan oleh berkurangnya distribusi air hujan, sehingga volume air permukaan seperti sungai, danau, dan lain-lain di berbagai daerah di bawah ambang batas minimum. Kekeringan menimbulkan dampak terhadap ekonomi, sosial, dan lingkungan alam. Bencana kekeringan telah melanda beberapa daerah di provinsi Aceh, sedangkan kajian mengenai kekeringan di Indonesia masih tergolong rendah. Salah satu metode yang dapat digunakan dalam menganalisa dan merepresentasikan tingkat kekeringan suatu wilayah adalah metode Standardized Precipitation Index (SPI). Penelitian ini bertujuan untuk menganalisis tingkat kekeringan di kawasan pesisir barat Aceh secara spasial. Data curah hujan diperoleh dari Center for Hydrometeorology and Remote Sensing (CHRS), selanjutnya perolehan nilai SPI dihitung menggunakan toolbox SDAT. Analisis dilakukan selama 1 tahun yaitu pada tahun 2022. Hasil analisis SPI menunjukkan wilayah yang paling kering yaitu Aceh Selatan dan sebagian Aceh Barat Daya dengan rata-rata nilai SPI sebesar 0.02. Hasil penelitian juga mengidentifikasi bahwa SST memiliki pengaruh terhadap kondisi kekeringan, di mana peningkatan SST berhubungan dengan penurunan curah hujan. Hubungan korelasi tertinggi yaitu senilai -0.9041 terdapat di area sekitar Stamet Cut NyakDhien.

Drought is caused by a decrease in the distribution of rainfall, leading to the volume of surface water in rivers, lakes, and other bodies of water in various regions falling below minimum thresholds. Drought has significant impacts on the economy, society, and the natural environment. Several areas in the province of Aceh have been affected by drought, although studies on drought in Indonesia remain relatively limited. One method that can be used to analyze and represent the severity of drought in a region is the Standardized Precipitation Index (SPI). This study aims to analyze the level of drought in the coastal areas of western Aceh spatially. Rainfall data was obtained from the Center for Hydrometeorology and Remote Sensing (CHRS), and the SPI values were subsequently calculated using the SDAT toolbox. The analysis was conducted over the course of one year, specifically in 2022. The SPI analysis results indicate that the driest areas are South Aceh and parts of Southwest Aceh, with an average SPI value of 0.02. The study also identifies that Sea Surface Temperature (SST) has an influence on drought conditions, where an increase in SST is associated with a decrease in rainfall. The highest correlation -0.9041 is found in the area around Stamet Cut NyakDhien.