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All Journal Tunas Geografi LaGeografiA Majalah Geografi Indonesia Jurnal Environmental Science JAGAT (Jurnal Geografi Aplikasi dan Teknologi) Pangea : Wahana Informasi Pengembangan Profesi dan Ilmu Geografi Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Geosfera: Jurnal Penelitian Geografi Geographica: Science and Education Journal JIM: Jurnal Ilmiah Mahasiswa Pendidikan Sejarah
Ahmad Iskandar
Program Studi Pendidikan Geografi Universitas Sembilanbelas November Kolaka
Agriculture, Biological Sciences & Forestry Humanities Astronomy Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Materials Science & Nanotechnology Physics Public Health Social Sciences Other

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Analisis Tinggi Gelombang Laut Di Perairan Sulawesi Tenggara Dan Laut Banda Ditinjau Dari Perspektif Dinamika Meteorologi Istiyono, Adi; Muliddin, Muliddin; Iskandar, Ahmad
JAGAT (Jurnal Geografi Aplikasi dan Teknologi) Vol 1, No 2 (2017): JAGAT (Jurnal Geografi Aplikasi dan Teknologi)
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (182.261 KB) | DOI: 10.33772/jagat.v1i2.6348

Abstract

Informasi tinggi gelombang dan angin sangat diperlukan masyarakat, khusus yang selalu menggunakan transportasi laut, pembangunan infrastruktur laut dan para nelayan tangkap di Perairan Sulawesi Tenggara dan Laut Banda.Gelombang laut yang sering terjadi, penyebabnya didominasi oleh faktor angin sebagai salah satu unsur cuaca akibat adanya dinamika meteorologi di atmosfer.Matahari sebagai penggerak dinamika meteorologi yang menyebab perubahan angin setiap musim barat dan musim timur.Interaksi laut dan atmosfer berupa tranfer energi angin dengan permukaan laut yang menyebabkan gelombang laut terjadi.Tujuan dari penelitian ini adalah untuk mengetahui pola karakteristik tinggi gelombang pada saat musim barat dan musim timur serta mengetahui pola karakteristik arah kecepatan angin pada musim barat dan musim timur. Metode dalam  menganalisis penelitian ini dengan menggunakan aplikasi wind wave05 untuk mengkonversi data angin pemodelan dalam format grib menjadi data tinggi gelombang. Hasil penelitian menujukan bahwa tinggi gelombang maksimum dan kecepatan angin maksimum terjadi pada saat musim timuran dengan arah angin dari tenggara serta tinggi gelombang minimum dan kecepatan angin minimum terjadi pada saat musim baratan dengan arah angin dari barat sampai barat laut.Kata Kunci : Tinggi Gelombang, Dinamika Meteorologi, Wind Wave05DOI : 10.5281/zenodo.2658824
Identifikasi Bidang Gelincir Zona Rawan Longsor Menggunakan Metode Geolistrik Di Ruas Jalan Toraja – Mamasa Sudarwin Kamur; Samsi Awal; Ahmad Iskandar
Majalah Geografi Indonesia Vol 34, No 2 (2020): Majalah Geografi Indonesia
Publisher : Fakultas Geografi, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/mgi.48262

Abstract

Abstrak. Metode geolistrik tahanan jenis merupakan salah satu dari metode geofisika yang dapat mendeteksi aliran listrik di bawah permukaan bumi. Salah satu aplikasi metode geolistrik tahanan jenis adalah dapat mengidentifikasi bidang gelincir pada daerah rawan longsor. Penelitian ini bertujuan untuk mengetahui bidang gelincir pada daerah rawan lonsor di ruas jalan Toraja – Mamasa. Hasil dari pengukuran geolistrik tahanan jenis dipadukan dengan hasil pengeboran di beberapa titik agar tidak terjadi kesalahan dalam proses interpretasi batuan yang diduga sebagai penyebab terjadinya tanah longsor. Informasi tentang perlapisan tanah tersebut digunakan untuk mengetahui batas-batas ketidakstabilan pada lapisan tanah yang dapat menjadi acuan dalam pengembangan wilayah, khususnya ruas jalan Toraja - Mamasa. Dalam penelitian ini diperoleh nilai resistivitas yang berbeda-beda untuk setiap batuan. Variasi resistivitas yang diperoleh dimulai dari 0 – 978 Ωm. Nilai resistivitas batuan pada bidang gelincir di lokasi penelitian berada pada bidang batas 50-300 Ωm. Batuan  penyusunnya berupa batupasir lempung, lava andesit dan basalt. Abstract The resistivity geoelectric method is one of the geophysical methods that can detect the flow of electricity below the earth's surface. One application of the resistivity geoelectric method is to identify the slip field in landslide prone areas. The research aimed to discover slip area of landslide prone zone at the segment road of Toraja-Mamasa. The results of the geoelectric resistivity measurements are combined with the results of drilling at several points so that there are no errors in the process of rock interpretation which are thought to be the cause of landslides. Information about the soil layers is used to determine the boundaries of instability in the soil layer which can be used as a reference in regional development, especially the Toraja - Mamasa road segment. In this research, it was obtained different resistivity values for each rock. The resistivity variation obtained started from 0 - 978 Ωm. The rock resistivity value in the slip plane at the research location is in the 50-300 Ωm boundary fields. The rocks lithologies are clay sandstones, andesite lava and basalt. 
IDENTIFICATION OF CHARACTERISTICS AND TYPOLOGY OF COASTAL AREAS AND SMALL ISLANDS OF KOLAKA REGENCY, SOUTHEAST SULAWESI PROVINCE Gaby Nanda Kharisma; Sudarwin Kamur; Ahmad Iskandar
Tunas Geografi Vol 10, No 2 (2021): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v10i2.27878

Abstract

Both the characteristic and the typology distinct the coastal areas dan small island landforms of Kolaka Regency. This paper aims to identify the characteristics and typology of coastal areas and small islands in Kolaka Regency, Southeast Sulawesi Province. The research originates with a literature study and conducts a remote sensing analysis to obtain a tentative map. Furthermore, the terrestrial land survey was carried out using a purposive sampling technique to collect abiotic and biotic data. Semi-structured interviews were conducted to collect the components of cultural data. This study used quantitative and qualitative descriptive. A spatial analysis was also employed to obtain spatial variations that occurred in the study location. Seven measurement stations spread over three districts: Pomalaa, Samaturu, and Wundulako. Pomalaa District consists of two stations: Sweedy Beach and Pelangi Island of coastal genesis in the Marine Deposition Coast. Samaturu District has two stations, Indah Kapu Beach of coastal genesis in the form of Marine Deposition Coast and Konaweha coastal village in Subaerial Deposition Coast. Wundulako District is divided into three stations: Padamarang Island of coastal genesis in the form of Coast Built by Organisms, Lambasina Besar Island with Marine Deposition Coast genesis, and Towua I identified as Coast Built by Organisms. Data on the characteristics and typology of coastal areas and small islands is a preliminary study regarding analyzing Coastal Vulnerability Index (CVI).
Potensi Air Tanah Sebagai Sumber Air Baku Masyarakat di Desa Holimombo Kecamatan Wabula Kabupaten Buton Ahmad Iskandar; Sudarwin Kamur; Nasarudin Nasarudin; Andri Yulianto
LaGeografia Vol 20, No 2 (2022): Februari
Publisher : UNIVERSITAS NEGERI MAKASSAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (656.519 KB) | DOI: 10.35580/lageografia.v20i2.23984

Abstract

Holimombo Village is an area with a karst landscape, where the problems in the area are the absence of surface water sources. Based on these problems, the research objective is to identify the potential of groundwater as a source of raw water for the community in Holimombo Village, Wabula District, Buton Regency. The research is a quantitative descriptive study, where the subsurface resistivity data was used. The Field observation techniques were used for data collecting in this study, where the measurement of the subsurface resistivity value uses a set of geoelectrical resistivity meters. The results of the geoelectric measurements will then be processed using the Res2DinV application. The subsurface resistivity measurements were carried out in four different paths. Based on the measurement results, the subsurface resistivity values at the research site in Holimombo Village, Wabula District, Buton Regency vary, ranging from 6.64 Ωm to above 1000 Ωm. Areas that have ground water potential are on the line 4 with coordinates 5°33,751' S and 122°53,112' E. The layer at this point is weathered limestone in the form of sand and gravel which has groundwater potential because it has a resistivity value of 50-500 Ωm. The potential for groundwater at that point is quite a lot with a thickness of 27.7 m. Therefore, this potential can be utilized by the Holimombo Village community as a source of daily raw water. AbstrakDesa Holimombo merupakan daerah dengan bentang alam kars, dimana permasalahan di daerah tersebut adalah tidak adanya sumber air permukaan. Berdasarkan permasalahan tersebut, maka tujuan penelitian ini adalah untuk mengidentifikasi potensi air tanah sebagai sumber air baku masyarakat di Desa Holimombo, Kecamatan Wabula, Kabupaten Buton. Penelitian ini merupakan penelitian deskriptif kuantitatif, dimana data yang digunakan berupa nilai resistivitas bawah permukaan. Teknik observasi lapang digunakan untuk pengumpulan data dalam penelitian ini, dimana pengukuran nilai resistivitas bawah permukaan menggunakan satu set alat geolistrik resistivitymeter. Hasil pengukuran geolistrik tersebut selanjutnya akan diolah dengan menggunakan aplikasi Res2DinV. Pengukuran resistivitas bawah permukaan dilakukan di empat lintasan berbeda. Berdasarkan hasil pengukuran diperoleh nilai resistivitas bawah permukaan di lokasi penelitian di Desa Holimombo Kecamatan Wabula Kabupaten Buton bervariasi, mulai dari 6,64 Ωm sampai dengan di atas 1000 Ωm. Wilayah yang memiliki potensi air bawah tanah yaitu pada lintasan 4 pada titik koordinat 5°33.751' LS dan 122°53.112' BT. Lapisan di titik ini merupakan lapukan batu gamping yang berupa pasir dan kerikil yang memiliki potensi air tanah karena memiliki nilai resistivitas 50-500 Ωm. Potensi air tanah di titik tersebut cukup banyak dengan ketebalan 27,7 m. Oleh sebab itu, potensi ini dapat dimanfaatkan oleh masyarakat Desa Holimombo sebagai sumber air baku sehari-hari.
IDENTIFIKASI AIR TANAH MENGGUNAKAN METODE GEOLISTRIK DI KECAMATAN POMALAA KABUPATEN KOLAKA PROPINSI SULAWESI TENGGARA Sudarwin Kamur
Jurnal Environmental Science Vol 4, No 2 (2022): April
Publisher : UNIVERSITAS NEGERI MAKASSAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (660.591 KB) | DOI: 10.35580/jes.v4i2.32876

Abstract

ABSTRACTThis research is motivated by development and population growth continues to increase from day to day. The impact of population growth is the increase in residential land. The increase in residential land is sometimes not accompanied by the provision of clean water by PDAM, so that people use dug wells or drilled wells. In the Kolaka area, especially the Kolaka District area, which is the research location, it is also a location that is difficult to find fresh water, so the geoelectric method plays a very important role in efforts to determine which locations contain fresh water. This research uses resistivity geoelectric method with Wenner and Schlumberger configuration. Processing data using Res2Dinv to map 2D isoresistivity. The well depth data was processed using Microsoft Excel, Surfer 10.2 application and ArcGIS to create a groundwater network map. The measurement trajectory uses a space of 7 meters, 20 meters and 40 meters. The results of the study obtained different resistivity values for each rock. The resistivity variation obtained starts from 0.453 – 13,988 m. Groundwater resistivity values are in the range of resistivity values of 0.453 – 33.3 m. The lithology of the aquifers in the study area is alluvial and sandstone. In the research location, groundwater is generally found at a depth of more than 5 meters
ANALYSIS OF SHALLOW GROUNDWATER QUALITY FOR DRINKING WATER NEEDS Ahmad Iskandar; Nasarudin Nasarudin; Sudarwin Kamur; Yusuf Retq
Geographica: Science and Education Journal Vol 4, No 2 (2022): December
Publisher : USN Kolaka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (292.429 KB) | DOI: 10.31327/gsej.v4i2.1858

Abstract

This research is based on water conditions in the Village of 19 November. There are some wells that do not meet the standards of clean water issued by the Ministry of Health of the Republic of Indonesia Number 492/Menkes/Per/IV/2010.  The purpose of this study was to determine the quality of shallow groundwater (wells) in 19 November Village. Based on regulations, the parameters measured consist of physical and chemical parameters.Physical parameters consist of odor, color, taste, temperature, and total dissolved solids, while chemical parameters consist of pH, BOD, and COD.  The data in this study were collected using observation techniques and laboratory analysis. Furthermore, the data is analyzed using descriptive statistics and the storet method. Based on the results of the analysis, it was found that the quality of shallow groundwater in 19 November Village was in the moderately polluted class and did not meet the standards. This is because the concentration of physical and chemical parameters has exceeded the set threshold.
IMPLEMENTASI PRAKTIK KULIAH LAPANGAN MENGGUNAKAN MODEL PROJECT BASED LEARNING DALAM WUJUD KEGIATAN PENANAMAN MANGROVE DI KABUPATEN KOLAKA Samsi Awal; La Alu; Nasarudin Nasarudin; Sudarwin Kamur; Ahmad Iskandar; Gaby Nanda Kharisma; Eko Hariyadi; Andri Yulianto
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 4 No. 2 (2023): Volume 4 Nomor 2 Tahun 2023
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v4i2.15298

Abstract

Pembelajaran geografi sebagian besar membahas tentang fenomena alam yang mempengaruhi kehidupan manusia. Hal inilah yang membuat pembelajaran geografi tidak hanya terbatas dalam ruang kelas tetapi juga perlunya praktik kuliah lapangan. Pembelajaran tentang mangrove sangat penting untuk dikuasai, namun menguasai materi mangrove tidaklah cukup menyelamatkan mangrove dari ancaman dan kerusakan, perlu adanya tindakan-tindakan yang tepat salah satunya  dengan Penanaman Mangrove. Di beberapa daerah di Kolaka laju kerusakan mangrove cukup tinggi, sehingga kegiatan ini selain penting untuk menumbuhkan kepedulian kepada mahasiswa juga mengedukasi masyarakat akan pentingnya keberadaan mangrove. Kegiatan pengabdian ini menggunakan metode proyek dengan 5 tahapan yakni: 1) penyusunan panduan praktek kuliah lapangan, 2) penyiapan bibit, 3) penentuan lokasi penanaman, 4) penanaman mangrove dan 5) pelaporan hasil praktek. Hasil yang telah dicapai dari program kegiatan pengabdian ini adalah mahasiswa geografi bersama-sama dengan masyarakat Desa Tondowolio secara bergotong royong berhasil menanam 1000 bibit mangrove dan merasa antusias dalam menanam mangrove. Pencapaian ini merupakan hal yang paling penting dan menjadi prioritas untuk mendukung program-program yang dicanangkan oleh Universitas Sembilanbelas November Kolaka dan Pemerintah Daerah Kabupaten Kolaka.
ANALISIS FUNGSI KAWASAN HUTAN LINDUNG, HUTAN PRODUKSI TERBATAS, DAN HUTAN PRODUKSI TETAP DI KABUPATEN KOLAKA TIMUR Samsi Awal; Ahmad Iskandar; Andri Estining Sejati; Eko Hariyadi
Jurnal Environmental Science Vol 6, No 1 (2023): Oktober
Publisher : UNIVERSITAS NEGERI MAKASSAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/jes.v6i1.38861

Abstract

This study aims to analyze the functions of protected forest areas, limited production forests and permanent production forests in East Kolaka Regency. This type of research is descriptive quantitative and area survey with the main study being the description of maps of physical factors and non-physical reasons. The research also examines the suitability of the map with the actual conditions in the field. Physical Data Collection Method using ArcGIS 10.4.1 software base map from BAPPEKAB East Kolaka Regency and BMKG. The Data of non-physical factors is the form of data related to inappropriate land use were collected through interviews. Descriptive analysis is presented in the form of: overlay with the scoring equipped, tables of areas and percentages. The criteria for designating a protected forest are fully explained in the Decree of the Minister of Agriculture Number 2837/Kpts/Um/11/1980. The results of the study show that the potential function of the area in East Kolaka Regency consists of Limited Production Forests and Production Forests. Most of the Limited Production Forests are in Ueesi District with 159,709.465 hectares or 40.72%. Most production forests are in Ueesi District with 20,937.437 hectares or 5.33%. The Limited Production Forest Area experienced a difference of 3,214.329 being settlements, dry land agriculture, paddy fields, and transmigration. Production Forest Areas experienced a difference of 64,042.12 into settlements, dry land agriculture, rice fields, and transmigration.
Tinjauan Kedudukan Tradisi Dui Menre dalam Pernikahan Adat Bugis di Kecamatan Samaturu Kabupaten Kolaka Kamur*, Sudarwin; Awal, Samsi; Iskandar, Ahmad; Afrisal, Afrisal
JIM: Jurnal Ilmiah Mahasiswa Pendidikan Sejarah Vol 8, No 3 (2023): Juni, socio-economics, community law, cultural history and social issues
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jimps.v8i3.25404

Abstract

Dui Menre adalah uang yang harus diserahkan oleh pihak mempelai laki-laki kepada pihak mempelai perempuan sebagai pembiayaan dalam pengadaan sebuah pesta pernikahan, tradisi Dui Menre masih sering dilaksanakan oleh masyarakat Bugis khususnya di Kecamatan Samaturu, Kabupaten Kolaka, tradisi ini seringkali menjadi penghambat hingga batalnya sebuah pernikahan terutama jika nominal Dui Menre yang diminta oleh pihak perempuan tidak mampu dipenuhi oleh pihak laik-laki. Penelitian ini bertujuan untuk mengetahui kedudukan tradisi Dui Menre dalam pernikahan adat Bugis di Kecamatan Samaturu, Kabupaten Kolaka. Metode yang digunakan dalam penelitian ini adalah penelitian kualitatif, penelitian kualitatif adalah penelitian yang bermaksud untuk memahami fenomena tentang apa yang dialami oleh subjek penelitian misalnya perilaku, persepsi, motivasi, tindakan, dan lain-lain. Hasil penelitian ini menunjukkan bahwa tradisi Dui Menre dalam pernikahan adat Bugis di Kecamatan Samaturu, Kabupaten Kolaka memiliki kedudukan yang sangat penting bagi masyarakat suku Bugis dan telah menjadi syarat wajib yang harus dipenuhi oleh calon mempelai laki-laki, juga menjadi penentu bagi berlangsung dan tidaknya suatu pernikahan.
A Analisis Spasial Daerah Rawan Longsor Di Kecamatan Latambaga Kabupaten Kolaka Iskandar, Ahmad; Kamur, Sudarwin; Kharisma, Gaby Nanda; Awal, Samsi; Hanusi; Hasan, Radif
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 5 No. 2 (2024): May
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v5i2.324

Abstract

Kolaka Regency is an area with topographic conditions dominated by hills and steep slopes and has high rainfall intensity. Latambaga is one of the districts in Kolaka Regency which is prone to landslides. Therefore, this research aims to spatially analyze areas prone to landslides in Latambaga District, Kolaka Regency. This type of research is descriptive quantitative using data on slope slope, land use, rainfall and soil type. These data were analyzed using weighting and scoring. The research results of landslide hazard maps were created using GIS with the ArcGIS 10.3 software application through an overlay stage process. Based on the research results, it shows that the area is not prone to landslides covering an area of 2,519.83 Ha or 8.95%, the area is slightly prone to landslides covering an area of 12,775.49 Ha or 45.38%, the area is quite prone to landslides covering an area of 4,621.18 Ha or 16.41%, landslide prone areas are 3,874.94 Ha or 13.76% and very prone areas are 4,246.24 Ha or 15.08%.
Co-Authors Afrisal Afrisal Afrisal, Afrisal Andri Estining Sejati Andri Yulianto Andri Yulianto Asrianto, Rifky Asrianto Awal, Samsi Ayu Andini Baharudin Baharudin E., Hariyadi Eko Hariyadi Eko Hariyadi Euis Nurul Hidayah Gaby Nanda Kharisma Gaby Nanda Kharisma Hanusi Hasan, Radif Hasrifin, Hasrifin Hermis Anjas Sari1 ilmah, nur Iskandar, Ahmad Istiyono, Adi Iswanti, Iswanti Juliawan, Enry Kadir, Muhammad Fajar Abdul Kamur*, Sudarwin Kamur, Sudarwin L, Irwan La Alu Lestari, Selma Ayu Masdar, Akmal Muhammad Syaiful Muhammad Syaiful Muliddin Nanda Kharisma, Gaby Nasarudin Nasarudin Nasarudin, Nasar Nuhu, Wa Nuhu Priyadarshini, Rossyda Ramanda, Zey Ali Samsir Reski Amalia riani, alda Riska Riska Riski Amalia, Riski Risnawati Risnawati Septi Andriani septiawan, Bayu dwi Silvana Dwi Nurherdiana Suartini, I Ketut Sudarwin Kamur Sudarwin Kamur* Sugiasih, Intan Triani urniawan, Ahmad Triantono K Windi Windi, Windi Yuni Andriyani Safitri Yusuf Retq