Pemetaan Risiko Kekeringan Di Nusa Tenggara Timur Berdasarkan Prediksi Return Period

Inas, Rosyida (2017) Pemetaan Risiko Kekeringan Di Nusa Tenggara Timur Berdasarkan Prediksi Return Period. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

[img] Text
1313100095-Undergraduate_Theses.pdf - Published Version
Restricted to Repository staff only

Download (3MB)

Abstract

Kekeringan merupakan bencana hidrologi dan meteorologi yang memberikan dampak negatif bagi manusia dan lingkungan-nya. Badan Penanggulangan Bencana Daerah Provinsi NTT menyebutkan pada tahun 2015 terdapat 20 kabupaten di NTT yang dilanda kekeringan. Oleh karena itu penelitian ini mengkaji risiko kekeringan di NTT dengan menggunakan Standardized Precipitation Index (SPI) pada skala waktu 1 bulan. Penelitian dilakukan pada data curah hujan harian di NTT tahun 1999-2015. Dari analisis yang dilakukan, nilai SPI dapat memantau kekeringan di NTT dengan proporsi kekeringan yang terjadi sekitar 12-15% selama 17 tahun (1999-2015). Puncak kekeringan terbesar terjadi di Stasiun Meteorologi Frans Sales Lega serta kekeringan dengan durasi dan kekuatan (magnitude) paling besar terjadi di Stasiun Meteorologi Frans Sales Lega dan Stasiun Meteorologi Gewayantana. Selanjutnya, prediksi return period untuk 5, 25, dan 50 tahun dihitung untuk merancang durasi dan magnitude kekeringan yang dapat terjadi di NTT dan pemetaan risiko kekeringan. Hasil pemetaan menunjukkan Stasiun Meteorologi Gewayantana merupakan kabupaten dengan nilai tertinggi durasi dan magnitude untuk masing-masing return period. Sedangkan Stasiun Meteorologi Komodo dan Stasiun Meteorologi Frans Sales Lega cenderung memiliki nilai durasi dan magnitude terendah jika dibandingkan dengan stasiun pengamatan lainnya. ========================================================= ========================================================= Drought is a meteorological and hydrological disasters which adversely affect man and the environment. Regional Disaster Management Agency of NTT province said in 2015 there were 20 districts in the province were hit by drought. Therefore, this study examines the risk of drought in the province using the Standardized Precipitation Index (SPI) on a period time of 1 month. The study was conducted on a daily rainfall data in NTT years 1999-2015. Based on the analysis, the value of SPI can monitor the drought in the province with the proportion of the drought that occurred around 12-15% for 17 years (1999-2015). The peak of the drought occurred in the Meteorological Station Frans Sales Lega and the drought with most powerful magnitude as well as duration occurred in the Meteorological Station Frans Sales Lega and Gewayantana. Furthermore, the prediction of the return period for 5, 25, and 50 years is calculated to design the duration and magnitude of drought occured in NTT and the drought risk mapping. Mapping results indicate Gewayantana Meteorological Station is the station with the highest value of the duration and magnitude for each return period. While the Meteorological Station Meteorological Station Komodo and Frans Sales Lega tends to have the lowest value of duration and magnitude when compared to other observation stations.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Kekeringan, Drought, Return Period, Standardized Precipitation Index
Subjects: H Social Sciences > HA Statistics
H Social Sciences > HD Industries. Land use. Labor > HD61 Risk Management
Divisions: Faculty of Mathematics and Science > Statistics > (S1) Undergraduate Theses
Depositing User: - ROSYIDA INAS
Date Deposited: 20 Apr 2017 02:47
Last Modified: 27 Dec 2017 08:09
URI: http://repository.its.ac.id/id/eprint/3517

Actions (login required)

View Item View Item