Coastal Physical Vulnerability of Surabaya and Its Surrounding Area to Sea Level Rise

The study for coastal vulnerability to sea level rise was carried out in Surabaya and its surrounding area, it has focused on calculations of the physical vulnerability index were  used coastal vulnerability index (CVI) methods. It was standardized by the multi criteria analysis (MCA) approach according to the study area.  The score of each physical variable derived from remote sensing satellite data and the results of studies that have been done, such as modeling results and thematic maps, and then integrated into geographic information systems (GIS). Result of this study shows that the coastal areas of Gresik, Surabaya, and Sidoarjo in the very low to very high vulnerability level. Physically, the low land areas with open and slightly open coastal have a high vulnerability category. The high level vulnerability was found located in the northern of Madura Strait (Gresik Regency) that overlooks to the Java Sea is about 28.81% from the entire of study areas. Meanwhile, the moderate, low and very low levels of vulnerability were located on Surabaya and Sidoarjo Regency that have more protected coastal area, relatively. According to the physical condition, the coastal elevation is the most variable that contributes to the high of vulnerability index in the coastal of Surabaya City and Sidoarjo Regency.&nbsp

Pemodelan Transport Sedimen di Perairan Pesisir Semenanjung Muria, Jepara

PEMODELAN TRANSPORT SEDIMEN DI PERAIRAN PESISIR SEMENANJUNG MURIA, JEPARA. Penelitian pergerakan transport sedimen di perairan Semenanjung Muria telah dilakukan. Dalam studi ini digunakan model matematika yang terdiri dari model hidrodinamika dan model transport sedimen. Input data yang digunakan dalam model adalah pasang surut, angin muson, dan debit sungai. Hasil simulasi pemodelan transport sedimen menunjukkan bahwa penyebab utama dari variasi pola distribusi sedimen tersuspensi di perairan Semenanjung Muria adalah pasang surut dan variasi musim

Studi Hidrologi Hutan Kota Kampus Universitas Indonesia Depok

Hydrological Study on the urban forest in Campus Area of the Indonesia University, Depok during September 2000– February 2001 hydrological measurement of urban forest in Campus Area of the Indonesia University, Depok werecarried out to identify the effect of land cover on the runoff generation processes. Seven observation station which arecharacteristised by differenced land cover were build to measure overland and sub surface fl ow. The result of data analysisshowed that the grass and litter cover in urban forest fl oor played an important role as a control factor of overland fl ow and throughfl ow production, especially signifi cant during the convective rains. During this events the proportion of throughfall on this area which produced overland fl ow, varied between 5,3-7,2%, while on the area without the grass and litter cover, its about 12,5-18,9%. During December–February the overland fl ow was very high. This is probably closely related to the existence of the widespread saturation overland fl ow. Generally it was shown a very close relationship between throughfall and overlandfl ow on the area without the grass and litter cover. The effect of antecedent precipitation index on the overland and throughfl ow production was identifi ed on the location with grass cover and cultivated area and particularly signifi cant on the events with throughfall >40 mm.Keywords: Overland flow, saturation overland fl ow, subsurface fl ow, through fall, antecedent precipitation inde