Analisa Sea Level Rise Dari Data Satelit Altimetri Topex/Poseidon, Jason-1 Dan Jason-2 Di Perairan Laut Pulau Jawa Periode 2000 – 2010

Abstract

<span>It has been conducted a research about sea level rise (SLR) in surrounding Jawa island by using <span>satellite altimetry data Topex/Poseidon, Jason-1 dan Jason-2 for period 2000 <span>– <span>2010. Satellite <span>altimetry is satellite which specially design for measuring dynamics of sea water. Those <span>satellite lauched firstly in 1992 incorporation between <span><em>National Aeronautics and Space </em><span><em>Administration </em><span>(<span><em>NASA</em><span>) dan European Space Agency (ESA). There are six locations for <span>measuring SLR i.e. Jakarta, Semarang, Surabaya, Pangandaran, Jogjakarta dan Prigi. We chose<br /><span>locations based on alongtrack of satellite and near the big cities in Jawa island with dimension <span>area around 0.5<span>o<span>x0.5<span>o <span>degrees. We found SLR rate for Jakarta (2.5 ± 0.24 mm/yr), Semarang <span>(2.16 ± 0.20 mm/yr), Surabaya (2.72 ± 0.19 mm/yr), Pangandaran (0.71 ± 0.33 mm/yr), <span>Jogjakarta (0.91 ± 0.38 mm/yr) and Prigi (1.3 ± 0.38 mm/yr). The average SLR rate for North <span>coast is (2.46 ± 0.21 mm/yr) and for South coast (0.97 ± 0.36 mm/yr). This results are well<br /><span>correlated with data from tide gauge stations.</span></span></span></span></span></span></span></span></span></span></span><br /></span></span></span></span></span></span></span></span></span></span></span>

Analisis Dinamika Permukaan Laut di Laut Jawa dengan Recurrent Neural Network Periode 1993 sampai 2019

“…Sedangkan pada tahun 2015, terjadi gejala alam Super El Niño atau NASA menyebutnya "Godzilla El Niño" yang berdampak pada penurunan drastis nilai kenaikan muka air laut rata-rata pada bulan Juli 2015, fenomena yang terjadi di Samudera Pasifik ini membawa dampak pada permukaan laut Laut Jawa (Ginanjar et al, 2019). Wuriatmo (2012) menunjukkan bahwa selama periode 2010/2011 telah terjadi peningkatan kenaikan muka laut di Laut Jawa karena adanya fenomena La Niña yang meningkatkan suhu muka laut di Samudera Pasifik yang memicu terjadinya peningkatan laju anomali muka laut di Laut Indonesia (dalam hal ini Laut Jawa) sebagai akibat dari distribusi massa air dingin dari Samudera pasifik menuju Samudera Hindia. Hal ini sejalan dengan Kismawardhani et al (2018) yang menunjukkan adanya keterkaitan antara SST (sea surface temperature) terhadap SLA di Laut Jawa dimana dengan meningkatnya SST selama periode 1993-2015 terjadi pula peningkatan SLA di Laut Jawa.…”

Variation and Trend of Sea Level Derived From Altimetry Satellite and Tide Gauge in Cilacap and Benoa Coastal Areas

“…In Southeast Asia water, the rate of sea level rise varied from 1 to 10 mm/year (Strassburg et al 2015). For the area of Java Sea and waters of South Java, the rate of sea level was about 0.71 -2.72 mm/ year (Wuriatmo et al 2012). (Figure 2-1).…”

The mapping of the vulnerability coastal area in Pangandaran District by the coastal vulnerability index (CVI) approach

“…These results show a similarity to the IPCC [2] projections, which found the earth experience will experience an overall sea level rise of 4.9 mm/year, a significant increase from the 3.1 mm/year found in the 1993-2003 observations. In the period of 1995-2014, the entire southern waters of Java Island experienced an average sea level rise of 1.4 mm/year [3] and Wuriatmo et al [4] found evidence of sea level rise on the range of 0.38 -1.04 mm/year throughout the 2000-2010 period in Pangandaran Regency. According to Dasanto [1], Pangandaran Regency will lose 42.1 ha of land by 2050 and 106.4 ha by 2100 which includes settlements and nonsettlements.…”