GEOLOGI DAN ANALISA RESIKO BANJIR LAHAR HUJAN DI KALI KONTO DAN SEKITARNYA, DAERAH PONDOKAGUNG KECAMATAN KASEMBON, KABUPATEN MALANG, PROVINSI JAWA TIMUR

HASIBUAN, MAWARDY EKA PUTRA (2015) GEOLOGI DAN ANALISA RESIKO BANJIR LAHAR HUJAN DI KALI KONTO DAN SEKITARNYA, DAERAH PONDOKAGUNG KECAMATAN KASEMBON, KABUPATEN MALANG, PROVINSI JAWA TIMUR. Other thesis, UPN "Veteran" Yogyakarta.

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Abstract

In the administration of the study site is located in an area PondokAgung, Kasembon,Malang, East Java Province. In UTM (Universal Transverse Mercator) coordinates located at :
641000mE - 646000mE and 9133000mN - 9137000mN with an area of 30 km² area carefully situations.
Through morphological approach to the various elements that exist in the field and adapted to the topographic maps / topographic features, and supported by previous researchers,
which according to Van Zuidam, 1983, the authors divide the area into one unit carefully situations
original form, namely the form of volcanic origin. Based on the unit above the original form, the
authors divide the unit into three primary forms geomorphic units, namely: Lembah Laharik (V2),
Lereng Vulkanik Tengah (V4), and Lereng Vulkanik Bawah (V5). Based on direct observations in
the field and interpretation of geological maps to see the pattern of drainage and refers to the
classification of the pattern of drainage it can be concluded that the pattern of flow of the river that
developed in the research area is the pattern of flux parallel reflecting that the study area has a
resistance the same rock and topographic layer of sediment horizontal or inclined and is
categorized as a mature stage geomorphology. It is caused by erosion of the lateral and vertical
erosion runs in a balanced and sedimentation processes run until now. Usually has a wave relief
and sloping land with large and deep valleys.
Statigrafi research area is divided into three lithologies from old to young, ie breksi
gunungapi Anjasmara Tua unit (Plistosen) , breksi piroklastik Kelud Muda unit (Holosen), and
units of lava deposition Kali Konto (Holosen). Volcanic facies that exist in research areas such as
medial volcaniclastic (Vessel & Davies, 1981) which is deposited on the Terrestrial environment Volcano.
Based on the analysis of disaster risks lava rain area PondokAgung divided into 3 levels
of risk, namely the high degree of risk that includes the village Sukosari, the level of risk being
that includes the village of Bayem and Kasembon, as well as a low risk level that includes the
village Brumbung, Siman, Kampung Baru, Kepung, and Damarwulan.

Secara administrasi lokasi penelitian terletak di daerah PondokAgung, Kecamatan
Kasembon, Kabupaten Malang, Provinsi Jawa Timur. Secara Koordinat UTM (Universal
Transverse Mercator) daerah telitian terletak pada: 641000mE - 646000mE dan 9133000mN 9137000mN
dengan luas daerah telitian 30 km².
Melalui pendekatan berbagai unsur morfologi yang ada dilapangan dan disesuaikan dengan peta
topografi/rupabumi, serta didukung oleh peneliti sebelumnya, yakni menurut Van Zuidam, 1983,
penulis membagi daerah telitian menjadi satu satuan bentuk asal, yaitu: bentuk asal Vulkanik.

Item Type: Thesis (Other)
Subjects: Q Science > QE Geology
Depositing User: Eko Yuli
Date Deposited: 09 May 2016 03:27
Last Modified: 06 Oct 2022 03:34
URI: http://eprints.upnyk.ac.id/id/eprint/374

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