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Wyświetlanie 1-2 z 2
Tytuł:
Trend of Coastline Change for Twenty Years (1994-2014) in Cirebon, Indonesia
Autorzy:
Harahap, Syawaludin A.
Purba, Noir P.
Syamsuddin, Mega L.
Powiązania:
https://bibliotekanauki.pl/articles/1046538.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Cirebon
Landsat imagery
MNDWI
West Java
coastline change
erosion
sedimentation
Opis:
There are many factors lead to coastline change, and coastal erosion by the sea-water can lead to the reduction of land areas. Meanwhile, with sedimentation, there will be an increase in landmass. Cirebon, which is part of the northern coastal area of West Java Province, is located on lowland with a dense population and rapid urban development. Several studies have been conducted during the past decade in the coastal areas of Cirebon with research results indicating that most of the coastal areas in Cirebon are subject to landslides at various scales ranging from vulnerable to bad conditions. Based on this, it is necessary to do a study aimed to know the time series trend of coastline change in Cirebon, Indonesia. This study is expected to provide valuable information on the latest conditions of coastal areas in Cirebon, and can be used as a basis for land use and coastal management planning, as areas of potential loss to erosion can be identified and future mitigation of the coastal areas can be undertaken. The configuration of changes in coastline was determined using remotely sensed data of Landsat 7 TM/ETM+ satellite. Imagery data was processed using MNDWI. Accordingly, Cirebon has for twenty years (1994-2014), experienced a significant shift in the coastline. The average value of the coastline advancing toward the sea is 643 meters and coastline setback is 343 meters, or there has been an average shift of the coastline of approximately 986 meters. Meanwhile, over the past twenty years, the length of the coastline has increased by around 2.2 kilometers. The value of coastline onward that is greater than the setback indicates that changes in the coastline in Cirebon tend to experience accretion. Conclusively, Cirebon’s coastline changes show an increasing trend in length and domination by the accretion (sedimentation) process.
Źródło:
World Scientific News; 2019, 138, 2; 79-92
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surficial Sedimentary at the Bottom in Waters Surrounding the Arisen Land of Putri Island, Karawang - Indonesia
Autorzy:
Harahap, Syawaludin A.
Yuliadi, Lintang P. S.
Sinulingga, John N.
Powiązania:
https://bibliotekanauki.pl/articles/1031415.pdf
Data publikacji:
2021
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Arisen land
Cikiong Beach
Putri Island
deltaber
grain size
kummod-sel
phi (φ) scale
sedimentation
surficial sedimentary
Opis:
This study was conducted in July 2016 around Putri Island and Cikiong Beach, Batujaya District, Karawang Regency, West Java - Indonesia to know the types of surficial sedimentary that makeup Putri Island. Field survey activities were carried out to collect sediment samples using a 1-meter long piston core. The sampling locations were carried out at five stations by considering representativeness and ease of accessibility. Sediment analysis using the sieve or granulometric method to produce grain size information on the phi (φ) scale. Sediment types were classified based on grain size using the Wentworth scale and followed by the Folk’s ternary diagram. The study results show that the sediment covering the bottom of the waters around Putri Island is composed of seven types of sediment, namely gravel, very coarse sand, coarse sand, medium sand, fine sand, very fine sand, and silt. It can be seen that sand dominates the sediment fraction which reaches 94% followed by 4% mud and 2% gravel. If classified based on the main component of the Folk’s ternary diagram, the seabed of this area has three types of sediment textures, namely slightly gravelly sand [(g) S], Sand [S], and gravelly sand [gS]. Judging from the constituent elements of the sediment, it can be said that the sedimentation that occurs in the study location is composed of alluvial deposits. The formation of this sediment is dominated by material carried by the river flow through fluvial and tidal processes.
Źródło:
World Scientific News; 2021, 151; 95-109
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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