Methodology on Defining Environmental Sensitivity Index for Settlement Area in the River-Basin, Coastal and Small Island

2013 ◽  
Author(s):  
Yudi Wahyudin
2003 ◽  
Vol 2003 (1) ◽  
pp. 679-684
Author(s):  
Colin Plank ◽  
Zach Nixon ◽  
Christine Lord

ABSTRACT Environmental Sensitivity Index (ESI) maps and digital databases have been generated for the Hawaiian Islands. ESI atlases integrate the most recent data available in three general categories: shoreline habitats, biological resources, and human-use resources, to provide spill responders with a synopsis of critical information. The new Hawaii atlas was prepared using standardized ESI data collection and analysis methods. For the first time, the spatial accuracy of the ESI shoreline classification method has been quantitatively measured using GPS. Shoreline classification methodology consisted of low-altitude overflights during the 2.5 hours preceding and following low-tide. Aerial classifications were then checked on the ground throughout the study area. USGS 7.5 minute basemaps were used in the field and shoreline segmentation annotation was transcribed from scanned field maps to a digital shoreline provided by the State. ESI surveys in August of 2000 resulted in nineteen shoreline classes for the Hawaiian chain. The GPS field study was conducted simultaneously with shoreline classification. During GPS surveys boundaries between ESI shoreline segments were located in the field and their position recorded with a hand held GPS. The coordinates of the segment boundary as located on the final ESI map were compared to those recorded with the GPS. Data for over 60 locations were analyzed statistically using three commonly accepted error-reporting methodologies. A Root Mean Squared (RMS) error of 33.5 meters, a Circular Error Probable (CEP) of 28 meters, and a 95% error bound of 58.2 meters were found. Error occurred unsystematically and was attributed to various factors, including inaccuracies in basemap shorelines, human error in the field and cartography, and error expected when mapping natural gradations as discreet points.


2014 ◽  
Vol 70 ◽  
pp. 372-377 ◽  
Author(s):  
Robert Aps ◽  
Hannes Tõnisson ◽  
Giorgio Anfuso ◽  
José A. Perales ◽  
Kaarel Orviku ◽  
...  

SOCIOTECHNICA ◽  
2004 ◽  
Vol 2 ◽  
pp. 209-217 ◽  
Author(s):  
Masumi YAZAKI ◽  
Shintaro GOTO ◽  
Seiichi HAMADA ◽  
Nobuhiro SAWANO ◽  
Kunihisa SAO ◽  
...  

2017 ◽  
Vol 37 (2) ◽  
pp. 125-140
Author(s):  
Nurhadi Rangkuti

Archaeological researches in southeast coast of Sumatra find archaeological prove of Srivijaya era (7-13 AD). Settlement sites located along tidal swamp rivers near shoreline. Srivijaya communities lived on house on stilts from wood on the wetlands. The artifacts came from aboard, eg. Chinese ceramics, beads from India and glasses from Persian found with local artifacts. Also found boats of Southeast Asia tradition use sewn plank and lashed-lug technique. These artifacts represent maritime activities in southeast coast of Sumatra. Estimated southeast coast of Sumatra, which facing Strait of Bangka, is an archaeological settlement area of Srivijaya and also pre Srivijaya periods. This one have the harbour and the port. This paper tried to identify one of the archaeological settlement area which estimated as an entreport of Srivijaya period. This area located in Bay of Cengal, District of Ogan Komering Ilir, Province of South Sumatra. Remains of activity area concentrated in Lumpur River basin and empties into Java Sea. Identification an archaeological settlement area in Bay of Cengal based on archeological data analysis, textual and maps resources, environment and position of Bay of Cengal in global maritime networks of SrivijayaPenelitian arkeologi di pesisir tenggara Sumatra menemukan bukti-bukti arkeologis yang sezaman dengan berkembangnya Sriwijaya di Sumatra (7-13 M). Situs-situs hunian mengelompok di tepi aliran sungai rawa pasang surut. Situs-situs tersebut berada di hilir sungai yang lokasinya relatif dekat dengan garis pantai sekarang. Penduduk masa Sriwijaya tinggal pada rumah-rumah panggung bertiang kayu di lahan basah. Artefak-artefak yang ditemukan sebagian besar berasal dari luar negeri, seperti keramik Cina, manik-manik dari India dan kaca-kaca dari Persia dijumpai bersama dengan barang-barang lokal, seperti barang-barang dari tembikar. Ditemukan pula perahu-perahu kuna tipe Asia Tenggara berupa perahu kayu yang dibuat dengan teknik papan ikat (sewn plank) dengan menggunakan tali ijuk dan juga menggunakan pasak kayu. Bukti-bukti arkeologis tersebut menunjukan adanya aktivitas kemaritiman di pantai tenggara Sumatra. Diperkirakan pantai tenggara Sumatra yang berhadapan dengan Selat Bangka dan Laut Jawa merupakan kawasan okupasi masa Sriwijaya dan masa sebelumnya yang dilengkapi bandar pelabuhan. Tulisan ini berupaya mengidentifikasi salah satu kawasan situs di pantai tenggara Sumatra yang diperkirakan sebagai permukiman dan bandar pelabuhan masa Sriwijaya. Kawasan itu berada di Teluk Cengal yang terdapat di pantai timur Kabupaten Ogan Komering Ilir, Provinsi Sumatera Selatan. Tinggalan arkeologis terkosentrasi di daerah aliran Sungai Lumpur yang bermuara di Laut Jawa. Upaya mengidentifikasi kawasan situs di Teluk Cengal dilakukan berdasarkan analisis data arkeologi, sumber tertulis dan peta, keadaan lingkungan dan posisi Teluk Cengal dalam jaringan pelayaran maritim global masa Sriwijaya


2006 ◽  
Vol 10 ◽  
pp. 65-70
Author(s):  
John Tychsen ◽  
Ole Geertz-Hansen ◽  
Jesper Kofoed

The Kenya coastline extends 600 km from the border of Tanzania in the south to the border of Somalia in the north (Fig. 1). The Kenyan coast features a diverse marine environment, including estuaries, mangroves, sea grass beds and intertidal reef platforms and coral reefs, which are vital for the reproduction of marine organisms. These coastal ecosystems are regarded as some of the most valuable in Kenya but face serious threats from the ever increasing human pressure of tourism, industrial pollution, destructive fishing, mangrove logging and other unsustainable uses of marine resources. Another serious threat is the maritime transportation activities along the coast and at the ports. It is estimated that at any given time more than 50 ships operate in the major shipping lanes off the Kenyan coast, of which about nine are oil tankers with capacities ranging from 50 000 to 250 000 tonnes. Furthermore, the harbour of Mombasa serves as the major port for countries in East Africa. In recognition of the risks posed by oil pollution the government of Kenya and the commercial petroleum industry agreed to develop a National Oil Spill Response Contingency Plan (NOSRCP) with the purpose of enabling a speedy and effective response to any oil spill within the territorial waters of Kenya. An important element of this plan was the mapping of the coastal resources and the development of an environmental sensitivity atlas showing the vulnerability of the coast to marine oil spills. In 2004, the Government of Kenya approached the United Nations Development Program (UNDP) in Kenya for financial support to develop an environmental sensitivity atlas. The project was approved and forwarded for funding by the Danish Consultancy Trust Fund administrated by United Nations Operational Program (UNOPS) in Copenhagen. The project was announced in Denmark, and the KenSea group headed by the Geological Survey of Denmark and Greenland (GEUS) was awarded the contract. The project comprises four phases: (1) data compilation and development of the KenSea database, (2) development of a coastal classification for Kenya, (3) development of the sensitivity index jointly with a group of stakeholders, and (4) compilation of the KenSea environmental sensitivity atlas (Tychsen 2006).


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