ABSTRACT
This research was conducted in Maratua-Kakaban Islands, East Kalimantan,
Indonesia. This location was chosen because of its stable tectonic activity and its geographical
setting as the front most island in Indonesia. This location is also known as its tourism
destination and beautiful scenery. A small island like in Indonesia is prone to climate change,
especially sea level changes. This research is needed to formulate adaptation and mitigation of
sea level change in Indonesia. This research also important to understanding the global sea
change. This research also important from national sovereignty and coastal resources
management point of view. This research aims to: (1) identify water level changes evidence by
marine terraces analysis, cave morphology and speleothem; (2) define the highest and lowest
water level in Maratua Island, and (3) reconstruct the sea water level fluctuation during
Holocene. Sea level fluctuation data were interpreted using marine terrace data, marine notch,
and cave morphology. The data were collected by field survey using profiling method to find
surface topography and measuring sea floor profile using echo sounder. Based on the field
measurement, there are major and minor marine terraces found in the ocean floor in 82 and
180 m depth (major), 155 and 205 m depth (minor). Marine terrace also found in +6 m above
present sea level. Below, marine notch was found covered with sediment.
Publikasi:
International Conference on Environmental Resources Management in Global Region
IOP Conf. Series: Earth and Environmental Science 256 (2019) 012027
IOP Publishing
doi:10.1088/1755-1315/256/1/012027
Penulis:
E Haryono(1), D H Barianto(2), S T Putro(3), M H D Sasongko(4), and J Budisetiawan(5)
(1)Karst Research Group, Dept. of Environmental Geography, Universitas Gadjah Mada
(2)Dept. of Geological Engineering, Universitas Gadjah Mada
(3)Dept. of Marine Engineering, Yogyakarta Institute of Technology
(4)Dept. of Environmental Geography, Universitas Gadjah Mada
(5)Research Center for Resources and Marine Technology, Universitas Gadjah Mada
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