1,721,007 research outputs found
STABILITY ANALYSIS OF EDGE RIVER LAWE LIANG PANGI AT LEUSER SUB-DISTRICT, SOUTHEAST ACEH REGENCY TOWARDS FLASH FLOOD
No full textBanjir bandang merupakan suatu proses aliran air yang deras dan disertai dengan muatan yang banyak, juga bongkah batuan , tanah dan batang kayu yang berasal dari arah hulu sungai. Banjir bandang dipicu oleh faktor iklim dan faktor geologi seperti longsor dan runtuhnya bendungan natural pada hulu sungai.Naiknya air pada saat banjir bandang terjadi secara tibatiba dan sangat cepat. Penelitian ini dilakukan di DAS Lawe Liang Pangi Kecamatan Leuser, Aceh Tenggara. Berdasarkan informasi, terjadi hujan deras selama 3 hari sebelum terjadinya banjir. Banjir terjadi pada jum ’ at tanggal 17 Agustus 2012 jam 22.00 WIB . Terjadi longsor di 15 lokasi. Kerusakan paling parah terjadidi Naga Timbul, Suka Damae, Sepakat, Gaya Sendah, Punce Nali, dan Desa Indah Bun-bun.Topografi DAS di daerah Liang Lange Pangi merupakan daerah pegunungan dengan kemiringan sedang sampai curam. Tipe tanahnya adalah lanau berpasir halus sedikit lempung dan berwarna coklat tua dan jenis tanah ini rentan terhadap erosi. Tes stabilitas tanah pinggiran sungai berasal dari dua lokasi, faktor keamanan pada kondisi ekstrim (banjir) lebih kecil(1,34) dari nilai standar (1,5). Kondisi banjir tidak aman terhadap penggerusan pinggiran sungai, lebih berbahaya lagi ketika terjadi banjir bandang dengan kecepatan yang tinggi disertai muatan yang banyak. Rekomendasi untuk pencegahan dan mitigasi bencana banjir bandang di kec Leuser adalah pencegahan dan mitigasi berup
STABILITY ANALYSIS OF EDGE RIVER LAWE LIANG PANGI AT LEUSER SUB-DISTRICT, SOUTHEAST ACEH REGENCY TOWARDS FLASH FLOOD
Full text linkFlash flood is a process flow of heavy water and massive load concentrated is accompanied, also rock chunks, soil and logs (debris) from the upstream. Flash flood’s triggered by climatology and geological factors, landslides and natural damming at the upstream. The rising of water discharge flood process occurs suddenly and rapidly. The research in the Lawe Liang Pangi Watershed, Leuser Sub-district, Southeast Aceh Regency. Based on information, there are heavy rains occurred during the 3 days before the flood. Flooding occurred on Friday evening, August 17, 2012 at 22:00. Occured landslide at 15 locations. The most substantial damage is Naga Timbul, Suka Damae, Sepakat, Gaya Sendah, Punce Nali, and Bun-bun Indah villages. Liang Lawe Pangi watershed topography is mountainous, moderate to steep slope. The soil type is a little fine sandy silt loam and dark brown, and the soil type is erosion susceptible. The river bank stability test results for the two sampling locations, the safety factor in extreme conditions (flooding) is smaller (1,34) than the standard value (1,50). The flood conditions (inundation) is not secure against river bank scour. It is certainly more dangerous when taken by flash floods at a large velocity and followed by massive load. Recommendations for prevention and mitigation of flash flood disasters in Leuser Sub-district, the disaster prevention and mitigation in the structural measures that to typical flood prone locations and non-structural measures including vegetation and public education work for the land management
An analysis of physical vulnerability to flash floods in the small mountainous watershed of Aceh Besar Regency, Aceh province, Indonesia
Full text linkVulnerability is a loss rate perceived from elements at risk owing to the impact of hazards on determined magnitude and frequency. Vulnerability assessment of elements at risk is a critical component in the risk assessment framework. Considerable studies regarding flash floods have been conducted, but the depth of information on vulnerability is still limited. This study presents a model of the physical vulnerability of buildings caused by the incidence of flash floods, which is strengthened through intensity of the impact process and loss. This model used a non-linear regression approach using behavioural data in the form of the propagation height of the flood. The order-2 polynomial distribution can represent the relationship between the magnitudes of the best process and loss rate. The results are the risk assessments of an exposed area in mitigation strategies.https://doi.org/10.4102/jamba.v10i1.55
Assessing The Influence Of Pandrah Irrigation System Performance Indicators Using Structural Equation Modeling
Full text linkPandrah Weir, built-in 1987, serves the Pandrah Technical Irrigation Area in Bireuen District, Aceh Province, with an area of 1.203 Ha. Its old infrastructure has experienced various damage that can decrease the irrigation system performance. The Pandrah irrigation system's previous performance assessment by both the MASSCOTE approach and Rapid Appraisal Procedure (RAP) evaluation suggested a service level of 3.05 (useful classification). This study assessed the effect of the variables on the Pandrah irrigation system's performance with Structural Equation Modeling (SEM) operated by the AMOS program. The four leading indicators were irrigation service, Water User Farmers Association (P3A), operator Human Resources (H.R.), and irrigation operation modernization. The refinement of irrigation system performance analysis using SEM showed that results of the four irrigation system performance indicators, namely: 0.082 (p=0.768), 0.090 (p=0.273), 0.419 (p=0.287), and 0.606 (p=0.039) for irrigation service, P3A indicator, irrigation operation modernization, and H.R. respectively. Based on the evaluation of the four indicators of irrigation system performance, it is concluded that the Pandrah irrigation system's performance is good. This performance assessment provides a clear picture of irrigation water services, H.R., P3A being an initial assessment for priorities, planning, and scheduling to start modernization programs for irrigation system operations. Irrigation modernization aims to facilitate the operation and maintenance by improving the irrigation system. This modernization means that irrigation planning, irrigation operation, maintenance, and monitoring systems have been carefully calculated before proposing a new irrigation network. The success of monitoring activities requires the use of information technology
STUDI PARTISIPASI MASYARAKAT DALAM PERENCANAAN PEMBANGUNAN KECAMATAN LHOKNGA KABUPATEN ACEH BESAR
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Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
PENANGGANAN JARINGAN IRIGASI KRUENG BARO KABUPATEN PIDIE MELALUI ANGKA KEBUTUHAN NYATA OPERAISONAL DAN PEMELIHARAAN (AKNOP)
No full textTINGKAT KEKUMUHAN DAN PENANGANAN PADA PERMUKIMAN DESA BALE ATU KECAMATAN LUT TAWAR KABUPATEN ACEH TENGAH
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