Identifikasi longsoran bawah laut berdasarkan penafsiran seismik pantul di perairan Flores

Kris Budiono

Abstract


http://dx.doi.org/10.17014/ijog.vol4no1.20092

Submarine sliding frequently cause tsunami or a high velocity big wave around the submarine slid- ing area which enable to reach a long distance. This sliding is not always as a causal factor for hazard and even associate with storm and earthquake. Some of them occur in a narrow area and it’s just formed due to gravitational movement. Different with mechanism of landslide, which is commonly due to water saturated soil, the submarine sliding is a more complex event.

The submarine sliding is an important natural process which causes a big volume of sediment mass moves from a shallow area to a much deeper area of seafloor. There are many types and causal factors of seafloor instability, but the sliding terminology is predominantly used for the phenomena. A variety of seafloor materials, environments and sediment masses are some extreme influential factors in creat- ing the types of submarine sliding. The reflector of seismics is usefull to interpret the indications of the occurrence of geological structure and sub-marine slumping

In case of the Flores Sea, earthquake is a major causal factor for creating submarine sliding. The bigger magnitude of earthquake, the greater the dimension of submarine sliding. Eventually, it may affect to the more possible occurrence of a potential hazardous tsunami.

 


Keywords


submarine sliding; tsunami; Flores Sea

References


Budiono, K., Lubis, S., dan Kusnida, D., 1993. Penyelidikan Geologi Lingkungan Pantai dan Lepas pantai, Perairan Maumere dan sekitarnya, Flores, Nusa Tenggara Timur, Pusat Pengembangan Geologi Kelautan, Direktorat Jendral Geologi Dan Sumber Daya Mineral, Departemen Perambangan dan Energi.

Chough, S.K., Jeong, K.S., dan Honza, E., 1985. Zoned facies of mass-flow deposits in the Ulleung (Tsushima) Basin, East Sea (Sea of Japan). Marine Geology 65, h.113-125

Garrison, L.E. dan Sangrey, D.A., 1977. Submarine Landslide, USGS yearbook.

Permana, H., Pramumijoyo, dan Kumoro,Y., 1993. Pola Kelurusan Geologi Daerah Flores: Implikasinya Terhadap kerusakan Akibat Gempa Bumi 1992, PIT IAGI ke 22, Jakarta

Prasetyo,H.,1992. The Bali-Flores Basin, Geological Transition From Extensional to Subsequent Compressional Deformation. Proceedings, 21st Annual Convention Indonesian Petroleum Association, h455-478.

Van Zuidam, R.A., 1983. Guide to Geomorphological Aeral Photographic Interpretation an Mapping, ITC, Enschede, The Nederlands.


Full Text: PDF

Refbacks

  • There are currently no refbacks.


Creative Commons License
Indonesian Journal on Geoscience by https://ijog.geologi.esdm.go.id/index.php/IJOG/index is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

 

Indexing Site :

 

 

 

Follow us on:


shopify visitor statistics
View My Stats