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Afrital Rezki
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INDONESIA
Jurnal Spasial: Penelitian, Terapan Ilmu Geografi dan Pendidikan Geografi
Published by Universitas PGRI Sumatera Barat
ISSN : 25408933     EISSN : 25414380     DOI : https://doi.org/10.22202/js
Core Subject : Science, Social,
Astronomy Earth & Planetary Sciences Environmental Science Physics Social Sciences
Scope of publications includes physical geography, human geography, regional planning and development, cartography, remote sensing, geographic information system, geography education, and environmental science.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Ilmu Bumi dan Planet (Lain-Lain)
Articles 5 Documents
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Search results for , issue "Vol 6, No 3 (2019)" : 5 Documents clear
KERENTANAN WILAYAH TERHADAP PENURUNAN HARGA CRUDE PALM OIL (CPO) DUNIA DI KABUPATEN TANJUNG JABUNG BARAT BAGIAN HULU
JURNAL SPASIAL Vol 6, No 3 (2019)
Publisher : Program Studi Pendidikan Geografi Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (719.97 KB) | DOI: 10.22202/js.v6i3.4041

Abstract

Tanjung Jabung Barat Regency in the hilly part is one of the central oil palm in Indonesian with a high dependence of economic changing, so it has the potential to receive threats and be vulnerable to the decreasing of Worlds price of CPO. Indicator of exsposure, sensitivity, adaptive capacity are grouped by cluster method and weighting with AHP method to get an index of vulnerability which further verified trought field survey. The results of spatial analysis show that difference in the level of vulnerability have a significant relationship to accesibility, the existence of growth centers and goverment centers in the study area. High and very high vulnerability class regions are regions with high levels of exposure, low levels of sensitivity and low levels of adaptive. The region with PIR-Trans (transmigrasi) plantation patterns tends to have higher levels of vulnerability than that of self-reliant (swadaya) plantation patterns. Based on factual conditions and statistical test, applications of hierarchical cluster method is more appropriate to illustrate the vulnerability of the region to the worlds CPO price decline in Tanjung Jabung Barat compared to that of using k-means method.Kabupaten Tanjung Jabung Barat Bagian Hulu merupakan salah satu sentral utama kelapa sawit di Indonesia dengan tingkat ketergantungan ekonomi yang sangat tinggi, sehingga berpotensi menerima ancaman dan rentan terhadap penurunan harga CPO dunia. Indikator keterpaparan, sensitivitas dan kapasitas adaptif dikelompokkan dengan metode kluster dan pembobotan menggunakan metode AHP untuk mendapatkan indeks kerentanan yang selanjutnya diverifikasi melalui survei lapangan. Hasil analisis keruangan menunjukkan bahwa perbedaan tingkat kerentanan memiliki keterkaitan yang cukup nyata terhadap aksessibilitas, keberadaan pusat-pusat pertumbuhan dan pusat pemerintahan di daerah penelitian. Wilayah kelas kerentanan tinggi dan sangat tinggi merupakan wilayah dengan tingkat keterpaparan tinggi, tingkat sensitivitas rendah dan tingkat kapasitas adaptif yang rendah terhadap penurunanan harga CPO dunia. Wilayah dengan pola perkebunan PIR-Trans cenderung memiliki tingkat kerentanan yang lebih tinggi dibandingkan wilayah dengan pola perkebunan swadaya. Berdasarkan kondisi faktual dan uji statistik, penerapan metode hierarchical cluster lebih sesuai untuk menggambarkan kerentanan wilayah terhadap penurunan harga CPO dunia di Tanjung Jabung Barat dibandingkan dengan menggunakan metode k-mean cluster
EKSTRAKSI RUANG KEMACETAN DI KOTA PADANG
JURNAL SPASIAL Vol 6, No 3 (2019)
Publisher : Program Studi Pendidikan Geografi Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (470.953 KB) | DOI: 10.22202/js.v6i3.4181

Abstract

This research has aimed to describe areas and roads that are prone to traffic jams, the direction of congestion, sources of congestion, and the pattern of time of occurrence of congestion that occurs along roads in Padang City. This type of research is descriptive. This research has been conducted in the city of Padang. The study population is the entire network prone to traffic jams in the city of Padang, samples have been taken with a purposive technique. When the study was conducted in the morning, afternoon and evening at the location of the prone road to the city of Padang. Data analysis techniques that have been done by observation, documentation. It was found that there are 3 road segments prone to traffic jams. Direction of traffic jam Prof. Dr. Hamka experiences traffic jams in the morning in the direction of Pasar Raya, then in the afternoon and in the afternoon it is jammed in the direction of Tabing, Jalan Muhammad Yamin in the direction of traffic jams in Pasar Raya and Jalan Raya Indarung in the direction of Pasar Raya. Road traffic source Prof. Dr. Hamka is caused by the activity of the shadow terminal and the meeting of three currents, on Jalan Muhammad Yamin caused by the market and on Jalan Indarung because of the shadow terminal. In the traffic jam Prof. Dr. Hamka morning and evening, Jalan Muhammad Yamin afternoon and evening and Jalan Raya Indarung morning and evening.
MITIGASI MASYARAKAT TENTANG BENCANA BANJIR DI NAGARI AUR BEGALUNG TALAOK KAECAMATAN BAYANG KABUPATEN PESISIR SELATAN
JURNAL SPASIAL Vol 6, No 3 (2019)
Publisher : Program Studi Pendidikan Geografi Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (377.797 KB) | DOI: 10.22202/js.v6i3.3907

Abstract

This study aims at the Community Knowledge of Bajir disaster mitigation and community preparedness to Reduce the Risk of Flood Disaster at Nagari Aur Begalung Talaok, Bayang Subdistrict, southern coastal district. Descriptive research method The location of the study was at Nagari Aur Begalung Talaok, Bayang Subdistrict, southern coastal district. Population in the study The sample head of the family used an area probability sample and sample respondents based on the "proportional random sampling" method with a proportion of 20% of the total number of heads of family in Jorong, so that 23 respondents were obtained. Data analysis technique Using percentage formula and scale scales. The results of the study, First the public's knowledge of flood disasters. It can be concluded that the community's knowledge of flood disasters in the Bayang Nagari Aur Begalung Talaok District is quite understandable with a percentage of 43.51%, which means that based on the results of the community research, the understanding and knowledge of floods and damage are caused by flooding. Community preparedness about flood mitigation, It can be concluded that community preparedness to reduce the risk of floods in the Bayang Subdistrict Nagari Aur Begalung Talaok includes a notable percentage of 63.15%, which means that from the results of research the community does not understand preparedness to reduce risks, losses and damage caused with the flood disaster. Keyword: Flood Disaster. mitigation   
Beach Erosion Impact In Manggopoh Palak Gadang Ulakan Village
JURNAL SPASIAL Vol 6, No 3 (2019)
Publisher : Program Studi Pendidikan Geografi Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (275.233 KB) | DOI: 10.22202/js.v6i3.3860

Abstract

Beach erosion is an unavoidable phenomenon in coastal areas. The wind, climate change, tides and  sea level rised are the triggering factors for beach erosion. Some research also shows that beach erosion influenced by the physical structure, land use changing and morphology of the beach. Ulakan Tapakis District which is geographically bordered directly with the Indian Ocean is exposed to the direct impact of beach erosion, one of the worst areas, namely Nagari Manggopoh Palak Gadang Ulakan. The annual phenomenon causes social and economic losses, also physical buildings around the coast. This study aims to examine the physical and social economic impact of beach erosion. This research was conducted by surveys and in-depth interviews with stakeholders and the data were processed by descriptive methods. The results showed that the physical impact of beach erosion, namely damaging settlement, fish auction places, towers and roads around the beach. In addition, it also causes wells shallowing and sea water intrusion. The socio-economic impact that is decreased the income of citizens up to 50% and shifting the types of livelihoods, especially in trading.
ANALISA POLA PERGERAKAN SESAR SUMATRA BERDASARKAN PENGAMATAN DATA GPS 2016-2017 GUNA MENGETAHUI AKTIVITAS SEISMIK
JURNAL SPASIAL Vol 6, No 3 (2019)
Publisher : Program Studi Pendidikan Geografi Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (542.927 KB) | DOI: 10.22202/js.v6i3.3993

Abstract

Sumatran fault is one of active seismogenic zones on the earth that required a seismic activity movement monitoring for Sumatra Fault System (SSS) observation  patterns. GPS observation study was carried out to fit a monitor along the fault that patterns movement can be detected from time series calculation shows by coordinates displacement for outer and volcanic arc ridge areas. Two types of observation stations used, namely Sumatran GPS Array (SuGAr) and  Continuously Operating Reference Station of  Geospatial Information Agency (CGPS BIG). seventeen (17) observation SuGAr data stations produce velocity vectors that vary from 14.5 mm / year to 48.7 mm / year in the east to west direction and -9.2 mm / year to 37.4 mm / year in the North South direction. On BIG CGPS stations using 4 observation stations with the calculation of velocity vector ranging from 25.6 mm / year to 31.7 mm / year in the east to west direction and 5.2 mm / year to 15.4 mm / year in the direction North South. Movement pattern also indicated that the area has a rotation movement and locking.    Sesar Sumatra merupakan zona aktif seismogenik di bumi yang membutuhkan monitoring pergerakan aktivitas seismik untuk pengamatan pola pergerakan Sumatra Fault System (SSS). Studi pengamatan GPS merupakan metode monitoring yang sangat cocok untuk diterapkan di sepanjang sesar tersebut sehingga pola pergerakan dapat dideteksi dari kalkulasi deret waktu yang ditunjukkan oleh pergeseran koordinat dari pola pergerakan daerah sesar seperti daerah outer arc ridge dan volcanic arc ridge. Dua jenis data pengamatan digunakan yaitu data Sumatran GPS Array (SuGAr) dan Continuously Operating Reference Station Badan Informasi Geospasial (CORS BIG). 17 data pengamatan dari stasiun SuGAr menghasilkan vektor kecepatan yang bervariasi antara 14,5 mm/tahun hingga 48,7 mm/tahun pada arah timur ke barat dan -9,2 mm/tahun hingga 37,4 mm/tahun pada arah utara selatan. Stasiun CORS BIG dengan 4 titik pengamatan menghasilkan perhitungan vektor kecepatan antara 25,6 mm/tahun hingga 31,7 mm/tahun pada arah timur ke barat dengan 5,2 mm/tahun hingga 15,4 mm/tahun pada arah utara selatan. Pola pergerakan juga menunjukan adanya pergerakan rotasi dan locking.

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