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Martono, Martono
Pusat Sains dan Teknologi LAPAN
Earth & Planetary Sciences Education Mathematics

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PERUBAHAN TINGGI MUKA LAUT DAN KONSENTRASI KLOROFIL-A DI PERAIRAN SELATAN JAWA-SUMBAWA SELAMA INDIAN OCEAN DIPOLE 2016 Martono, Martono
GEOMATIKA Vol 23, No 2 (2017)
Publisher : Badan Informasi Geospasial in Partnership with MAPIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1248.218 KB) | DOI: 10.24895/JIG.2017.23-2.612

Abstract

Indian Ocean Dipole merupakan penyimpangan cuaca yang terjadi di Samudera Hindia tropis akibat interaksi laut-atmosfer. Penelitian ini dilakukan untuk mengetahui perubahan tinggi muka laut di perairan selatan Jawa, Bali dan Lombok-Sumbawa selama kejadian Indian Ocean Dipole 2016. Data yang digunakan terdiri dari indeks Indian Ocean Dipole, tinggi muka laut harian, konsentrasi klorofil-a bulanan dan arus geostropik pentad. Analisis anomali digunakan untuk mengetahui perubahan tinggi muka laut. Hasil penelitian menunjukkan bahwa selama kejadian Indian Ocean Dipole 2016 terjadi kenaikan tinggi muka laut di perairan ini. Kenaikan rata-rata tinggi muka laut dari Juni-November 2016 di perairan selatan Jawa, Bali dan Lombok-Sumbawa masing-masing sekitar 25 cm, 23 cm dan 17 cm. Dampak kenaikan tinggi muka laut menyebabkan penurunan konsentrasi klorofil-a yang ditandai dengan anomali negatif. Penurunan tertinggi konsentrasi klorofil-a terjadi di perairan selatan Jawa. Penurunan konsentrasi klofofil-a dari Juni-Oktober 2016 di perairan selatan Jawa mencapai -1,02 mg/m3, di perairan selatan Bali mencapai -0,74 mg/m3 dan di perairan selatan Lombok-Sumbawa mencapai -0,35 mg/m3. Kata kunci: perubahan, tinggi muka laut, Indian Ocean Dipole, klorofil-a
CHANGE OF SEA SURFACE HEIGHT IN THE SOUTHERN WATERS OF JAWA-SUMBAWA DURING INDIAN OCEAN DIPOLE 2016 Martono, Martono
MAJALAH ILMIAH GLOBE Vol 19, No 1 (2017)
Publisher : Badan Informasi Geospasial

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24895/MIG.2017.19-1.615

Abstract

Indian Ocean Dipole is a weather deviation that occurs in the tropical Indian Ocean due to air-sea interactions. This study was conducted to understand sea surface height change in the southern waters of Java, Bali and Lombok-Sumbawa during Indian Ocean Dipole 2016 events. Data used consists of dipole mode index, daily sea surface height, monthly chlorophyll-a concentration and pentad geostropic current. Anomaly analysis was used to assess sea surface height change. The result showed that during Indian Ocean Dipole 2016 events occured the increase of sea surface height in these waters. The average increase of sea surface height from June-Novemver 2016 in the southern waters of Java, Bali and Lombok-Sumbawa approximately 25 cm, 23 cm and 17 cm, respectively. Impact of the increase of sea surface height affects chlorophyll-a concentration to drop that was marked by negative anomaly. The highest decrease of chlorophyll-a concentration occured in the southern waters of Java. The decrease of chlorophyll-a concentration in in the southern waters of Java reached -1.02 mg/m3, in the southern waters of Bali reached -0.74 mg/m3 and in the southern waters of Lombok-Sumbawa reached -0.35 mg/m3. Keywords: change, sea surface height, Indian Ocean Dipole, chlorophyll-a
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