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Muh Aris Marfai
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Geomorphological mapping of the San Lorenzo area Sant'arcangelo region Southern Italy Muh Aris Marfai
Indonesian Journal of Geography Vol 37, No 2 (2005): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.2229

Abstract

The study area is located in the Sant'arcangelo region, Southern Italy. The area was developed from late Pliocene to middle Pleistocene in the southern part of the Apenines chain. It has also been defined as a piggy back basin filled with siliciclastic deposits, controlled by sedimentary tectonic activity.This article aims to identify the geological condition and generating geomorphological map for San Lorenzo area using aerial photo (scale 1:15000) and Panchromatic SPOT image (Scale 1:66000). Image interpretation was also done to identify morphological, structural and processes.The Sant'Arcangelo region is composed of 4 cycles both marine and continental in origin, all deposited on different environments: The Caliandro, Agri, San Lorenzo and Sauro cycles. The study area consists of Sauro and San Lorenzo Cycle. Sauro Cycle is Comprises of three heterotrophic units deposited in sintectonic discordance over the Agri cycle. San Lorenzo Cycle lying in unconformity over the precedent cycles is consisting of three units, namely conglomerates on the base part as well as on the top part of the sequence, and silty clays in the intermediate part. They form a syncline structure which ax has a NW-SE direction. The main structural features are represented by the San Lorenzo syncline and the Alianello fault. The San Lorenzo area has three principal origins: alluvial, denudation, and structural. Due to the geological-tectonic complexity, the structural landform is normally found as structural denudational landform. San Lorenzo area comprises of 41 landform units, namely 3 units of alluvial landforni, 26 units of denudational landform and 11 units of structural denudational landform.
Qualitative Analysis Of The San Lorenzo Landslide In The Sant' Arcangelo Region Southern Italy Muh Aris Marfai; Graciela Peters Guarin; Fransisco De La Caridad Viera Cepero
Indonesian Journal of Geography Vol 38, No 1 (2006): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.2236

Abstract

This study is applying qualitative analysis based on the multitemporal evidence for generating the expected-landslide hazard map. The study was carried out in San Lorenzo area, Sant' Arcangelo, Southern Italy. The main objectives of this study are: 1) to identify and generate old-landslide map year 1976 and recent-landslide map year 2002, and 2) to generate the expected hazard map based on multitemporal evidence. Interpretation of the aerial photographs has been used to determine the type of landslide and landslide activity in 1976, and fieldwork has been done to check type, of landslide and to determine the landslide activity in 2002. The comparison between activity 1976 and 2002 have been done in order to generate the expected hazard map. Most of the active landslide in 1976 and 2002 are complex and rockfalls type and only small part are spread; slide and flow. Some active landslides in 1976 are still active in 2002 and even inactive landslides in 1976 become active in 2002 and leading to the extended high and moderate hazard area.
DISASTER AND RESILIENCE FOR THE 2007 FLOOD EVENT IN PART OF SUKOHARJO REGENCY Sinta Damayanti; Muh Aris Marfai
Indonesian Journal of Geography Vol 43, No 2 (2011): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.2380

Abstract

Community resilience has become an important factor in a disaster mitigation plan.Resilience is related to the ability to recover from a disaster and is for every persondifferent. This research intends to assess community resilience for flood disaster. Factorsfor quantifying community resilience were asked to respondents by giving questionnaireand interviewing them, and FGD was also done in order to generate flood map based onthe community knowledge. The FGD result shows that the flood depth in the study areavaries from 0 until 300 cm, and the duration of inundation varies from 1-7 days. Floodalso caused losses, and the distribution of the losses was Rp. 0 - 100,000,000,- although, ingeneral, the losses was merely below Rp. 2,000,000,-. Based on the weighting result, theresilience value of the respondent is distributed from 0.113 until 0.700. The averageresilience value of Laban village is 0.403, and 0.368 for Kadokan village. The resiliencevalue was mostly influenced by human capital. In order to increase the communityresilience, government has established flood control devices and rehabilitated the dike alongthe river.
RIP CURRENTS SIGNATURES ZONE DETECTION ON ALOS PALSAR IMAGE AT PARANGTRITIS BEACH, INDONESIA Arry Retnowati; Muh Aris Marfai; J.T. Sri Sumantyo
Indonesian Journal of Geography Vol 44, No 1 (2012): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.2387

Abstract

Having bay and gulf morphology as cresentic beach, Parangtritis coast has been known potentiallythreat by rip currents hazard. This study aims to identify and detect breaking wavesregion and surf zone on ALOS PALSAR images, and identify and extract the cove shapeshoreline morphology of Parangtritis beach. ALOS PALSAR Fine Beam Single (FBS) HH polarizationacquired on 2nd May 2007 and 17th June 2007, off nadir angle 34.3º, and in descendingmode level 1.0 were utilized to derive amplitude information using Sigmasar. Shorelinemorphology detection showed that the cusps system has not changed much during May toJune 2007 when PALSAR images acquired, but might have shifted individually. The use ofoptical sensor with the same spatial resolution, ALOS AVNIR-2, supports to distinguish theboundary and determine the shoreline morphology of Parangtritis beach.
PEMODELAN SPASIAL BAHAYA BANJIR ROB BERDASARKAN SKENARIO PERUBAHAN IKLIM DAN DAMPAKNYA DI PESISIR PEKALONGAN Muh Aris Marfai
Bumi Lestari Journal of Environment Vol 13 No 2 (2013)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

AbstractTidal flood is predicted to be more severe in the future because of sea level rise due toglobal warming. Purposes of the study are: 1) identify spatial distribution of tidal floodhazard in Pekalongan coastal area; 2) identify environmental impacts of tidal flood inPekalongan coastal area; and 3) formulate coastal management based on spatialdistribution analysis and tidal flood impacts in Pekalongan. Flood analysis in coastalarea was conducted by flood hazard mapping using GIS (Geographic Information System).Flood hazard mapping was developed by integrating GIS operation with DEM (DigitalElevation Model), level of inundation and iteration process. Tidal flood inundation scenariowas generated based on highest tides and sea level rise scenario by IPCC 2007, level ofinundation reached up to 135 mm. Results of this study showed that settlement and irrigatedpaddy fields are the widest inundated area by tidal flood. Tidal flood provides seriousenvironmental impacts such as infrastructure damage, agriculture and aquaculture landdamage, and soil and water pollution. Infrastructure damages include road, settlementsand sanitation.
Kajian Transportasi Sungai Untuk Menghidupkan Kawasan Tepian Sungai Kahayan Kota Palangkaraya Noor Hamidah; R Rijanta; Bakti Setiawan; Muh Aris Marfai
TATALOKA Vol 16, No 1 (2014): Volume 16 Number 1, February 2014
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (886.975 KB) | DOI: 10.14710/tataloka.16.1.1-17

Abstract

River is a first transportation for connection city to village and central for economic community. Nowadays, land transportation is a trend  for connection city to village. River transportation have been not priority, due to land transportation more easy to access, low cost and faster rather than river transportation. River have been not priority for infrastructure and river is a backward. River is facing serious problems such as physical and environmental problem. River are still occupy for lower income people as a reason house can built by themselves and close to work location with a location in green belt area. Thispaper try to arguehow is a problem in  river transportation. The location of this research is Kahayan River, Palangkaraya City. This research aim is to reveal of potential of river transportation and unique of moda transportation will be revitalize of Kahayan riverside area of Palangkaraya City, Central Kalimantan.River is a first transportation for connection city to village and central for economic community. Nowadays, land transportation is a trend  for connection city to village. River transportation have been not priority, due to land transportation more easy to access, low cost and faster rather than river transportation. River have been not priority for infrastructure and river is a backward. River is facing serious problems such as physical and environmental problem. River are still occupy for lower income people as a reason house can built by themselves and close to work location with a location in green belt area. Thispaper try to arguehow is a problem in  river transportation. The location of this research is Kahayan River, Palangkaraya City. This research aim is to reveal of potential of river transportation and unique of moda transportation will be revitalize of Kahayan riverside area of Palangkaraya City, Central Kalimantan.
Co-Authors Arry Retnowati Bakti Setiawan Fransisco De La Caridad Viera Cepero Graciela Peters Guarin J.T. Sri Sumantyo Noor Hamidah R. Rijanta Sinta Damayanti