Browsing by Author "Husrin, Semeidi"

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    Analysis Of Shoreline Changes Of Bengkalis Island
    (2016-04-12) Abdillah, Yayat; Husrin, Semeidi; Sudirman, Nasir
    The island of Bengkalis in Riau province is highly vulnerable against the impact of future sea level rise because of its low lying coastal area. Moreover, actions of waves, currents and human interferences may lead to even faster retreat of the coastlines. The objective of this study is to investigate the shoreline changes over the last decades and to determine coastalvulnerabilitydue to climate change in the future. GIS method has been implemented to assess shoreline changes based on satellite images and other supporting data. Based on LANDSAT images, we found the northern part of Bengkalisshoreline suffers 4 m/year of erosion while the southern part experiences 2m/year of erosion. Combined with the analysis of future climate changes that may lead to sea level rise, the island of Bengkalis is considered to have high index of coastal vulnerability due to dense occupation in the coastal area and constant retreat of shorelines.
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    Coral Reef Rehabilitation In Marine Tourism Park Of Pieh Island And Its Surrounding Waters
    (2016-04-04) Darmawan; Husrin, Semeidi; Alrizky, Muhammad
    Pieh islandand its surrounding waters in West Sumatera Province has been recently declared as a marine tourism park. Covering a total area of 39,900 ha, this parkis rich by coral reef ecosystem, especially in five dedicated small islands: Pieh, Bando, Air, Pandan and Toran. Based on the identification and monitoring efforts carried out in 2010, more than 50 % of coral reef in this area was damaged. The objective of this paper is to describe the rehabilitation measures that have been carried out by LKKPN since 2010 to improve the conditions of coral reef ecosystem. The measures consisting of legal aspects (e.g. regulations and local rules), technical aspects (e.g. monitoring and transplantations), and other supporting measures have shown some improvement on the quantity of living coral reefs. Moreover, in order to boost the economy of locals, future plan to manage this marine tourism park will also be discussed.
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    Tsunami Vulnerability Of Critical Infrastructures In The City Of Padang, West Sumatera
    (2016-04-07) Husrin, Semeidi; Putera, Aprizon
    Based on historical records and latest studies on seismic activities in Sumatra mega thrust, the city of Padang is predicted to experience earthquake Mw.8 followed by tsunami in coming decades. Many efforts have been made to mitigate the impact of earthquake and tsunami such as: setting up early warning system, arising public awareness through education, and building shelters and tsunami evacuation routes. However, none of the efforts have been directed to the significance role of critical infrastructures. Having learnt from the 2004 Aceh tsunami, the existence of critical infrastructures played a key role in the processes of aids distribution, rehabilitation and reconstruction after the disaster. Therefore, the objective of this study is to assess tsunami vulnerability of 198 critical infrastructures in Padang using Papathoma Tsunami Vulnerability Assessment (PTVA-3) method by considering hydrodynamics, building characteristics, functionality, and physical environment. The analysis shows that more than 50% of critical infrastructure in Padang is highly vulnerable.