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All Journal Indonesian Journal of Geography Bulletin of Scientific Contribution : Geology Jurnal Geodesi Undip IJOG : Indonesian Journal on Geoscience Majalah Ilmiah MOMENTUM Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) Jurnal Analisa Sosiologi Buletin Sumber Daya Geologi
Chusni Ansori
Balai Informasi dan Konservasi Kebumian - LIPI Jln. Karangsambung, Km. 19 Karangsambung, Kebumen 54253
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Energy Engineering Environmental Science Social Sciences

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PENGEMBANGAN PARIWISATA BERKELANJUTAN: GRAFITI GUA JATIJAJAR SEBAGAI DAYA TARIK WISATA GUA Hindarto, Teguh; Ansori, Chusni
Jurnal Analisa Sosiologi Vol 10, No 2 (2021)
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jas.v10i2.51096

Abstract

Since 1975, Jatijajar Cave has undergone a redesign of the area and has been introduced as a public tourism property owned by the Kebumen Regency Government. In addition to the geological aspect which is the selling point of the existence of this cave, there are historical values and sociological values found on the cave walls in the form of handwriting (graffiti) from the colonial to post-colonial periods. If the caves generally contain symbolic images in the cave walls, the walls of the Jatijajar Cave show their unique characteristics in the form of handwriting containing descriptions of names and years of writing from 1816-1974. This study focuses on analyzing the social status of cave visitors through graffiti trails in the form of names and the period of the year they write with the aim of being a guide material for cave tourism (cave tourism). This study uses a qualitative method using sociological analysis tools which include the sociology of language, structural sociology, tourism sociology and sign semiotics with the aim of a comprehensive picture of the existence of Jatijajar Cave graffiti from several aspects, namely historical and geological and especially sociological. The choice of qualitative method is also related to the pandemic situation which causes the absence of sources to be interviewed, both traders, guards, visitors and related sources. The final result of this research becomes a recommendation for relevant parties, especially tourism stakeholders in Kebumen Regency to make Jatijajar Cave graffiti as a historical text and an attraction for the development of cave tourism (cave tourism) as part of tourism with sustainable goals (SDG's). Keywords: Historical Text, Tourist Attraction, Graffiti Text Meaning, Cave Tourism, Sustainable Tourism Abstrak: Sejak tahun 1975, Gua Jatijajar mengalami penataan ulang desain kawasan dan mulai diperkenalkan sebagai wisata publik milik Pemerintahan Daerah Kabupaten Kebumen. Selain aspek geologis yang menjadi nilai jual keberadaan gua ini terdapat nilai sejarah dan nilai sosiologis yang terdapat pada dinding gua berupa tulisan tangan (grafiti) dari periode kolonial hingga pasca kolonial. Jika gua-gua pada umumnya berisikan gambar simbolik di dalam dinding guanya maka dinding Gua Jatijajar memperlihatkan keunikan karakteristiknya berupa tulisan tangan berisikan keterangan nama dan tahun penulisan dari tahun 1816-1974. Tulisan tangan berisikan keterangan nama dan tahun penulisan dari tahun 1816-1974. Penelitian ini memfokuskan menganalisis status sosial pengunjung gua melalui jejak grafiti berupa nama dan periode tahun mereka menuliskan dengan tujuan sebagai materi panduan pariwisata gua (cave tourism). Penelitian ini menggunakan metode kualitatif dengan menggunakan perangkat analisis sosiologis yang meliputi sosiologi bahasa, sosiologi struktural, sosiologi pariwisata serta semiotika tanda dengan tujuan gambaran menyeluruh mengenai keberadaan grafiti Gua Jatijajar dari beberapa aspek yaitu historis dan geologis serta khususnya sosiologis. Pilihan metode kualitatif berkaitan pula dengan situasi pandemi yang menyebabkan ketiadaan narasumber untuk diwawancarai baik pedagang, petugas penjaga, pengunjung dan sumber terkait. Hasil akhir penelitian ini menjadi sebuah rekomendasi bagi pihak-pihak terkait khususnya pemangku kepentingan pariwisata di Kabupaten Kebumen untuk menjadikan grafiti Gua Jatijajar sebagai teks historis dan daya tarik pengembangan pariwasata gua (cave tourism) sebagai bagian dari pariwisata dengan tujuan berkelanjutan (SDG’s) Kata Kunci: Teks Historis, Daya Tarik Wisata, Makna Teks Grafiti, Pariwisata Gua, Pariwisata Berkelanjutan
A Preliminary Study of Paleoflood Deposits of the Lukulo, Kebumen Regency, Central Java, based on River Geomorphology Mareta, Nandian; Lubis, Rachmat F; Ansori, Chusni; Hadian, M Sapari Dwi; P Saputro, Sugeng; Farisan, Ardhan
Indonesian Journal of Geography Vol 56, No 1 (2024): 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.75926

Abstract

Lukulo is a river that flows through pre-tertiary rocks to the recent. The long Lukulo fluvial processes which included erosion, transportation, and deposition were depicted in extensive alluvial deposits downstream of the river. This vast alluvial plain may be a deposit result of the Lukulo flood in the past. The paleo-flood study is a study of flood events in the past with the technique used, namely knowing slack water deposits (Steding & Baker, 1987). Delineation of slackwater deposits is necessary to determine the location of paleoflood deposition. Geomorphology of Lukulo watershed is needed as a preliminary study to determine the characteristics of the Lukulo watershed. Based on the analysis of the Lukulo watershed, DEM, with the systematic method of literature review, the result of this watershed geomorphology was obtained, namely; the morphology of the Lukulo watershed included an elongated oblong shape of the watershed, with an average Rc value of all three segments (upstream, middle, and downstream) of 0,52. The average drainage density (Dd) of river flows in the Lukulo watershed is 8,05 km/km2 (middle class). The Lukulo gradient upstream is 450, entering the middle is reduced to 300, and downstream the gradient is reduced to 100. The morphology and morphometry of the Lukulo watershed are interpreted to mean that Lukulo belongs to the medium-spanned watershed in terms of flood runoff and erosion. The lithology is a mixture of impermeable and permeable rocks. Delineation of diluvial and alluvial deposits is found in the upstream, middle, and downstream, of the Lukulo river. It depicts delineated paleoflood deposits in all segments of the river.
Effect of Firring Heating Rate on the Density, Porosity, Vickers Hardness and Microstructure of the Crucible Specimens Rusiyanto, R.; Meiartha, REGA; Fitriyana, Deni Fajar; Sudiyono, S.; setiadi, rizki; Siregar, Januar Parlaungan; Ansori, CHUSNI
JURNAL ILMIAH MOMENTUM Vol 20, No 1 (2024)
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/jim.v20i1.10306

Abstract

Failure in the results of making the crucible is cracking and even deformation. Cracks that occur can cause fluid leakage when melting so that it disrupts the casting process. The quality of the crucible can be influenced by factors including the selection of constituent materials, particle size, the amount of pressure, and the length of the firring process of heat treatment and cooling in the furnace. This study aims to determine the effect of heating rate on crucible made from clay and kaolin and molasses as a binder. With the treatment of different heating rates in the firring process, namely 3 ℃ / min, 4 ℃ / min, 5 ℃ / min, 6 ℃ / min, and 7 ℃ / min.  The composition of the materials used is 40% clay, 40% kaolin, and 5% molasses and 15% water as the total mass. The process of making specimens begins with crushing clay, sieving clay 100 mesh. Mixing process using twin screw extruder machine repeatedly for 45 minutes. Molded cylindrical size 20 x 20 mm, free air drying for 8 days, firring process at 1000 ℃ holding time 1 hour. The results showed that the difference in heating rate did not affect the change in chemical elements but the best heating rate was at 3℃/min showing a denser morphology, density value of 1.62 g/cm3, porosity value of 23%, and Vickers hardness value of 20.43 HVN.
Analisis Kelurusan Di Kawasan Geopark Karangsambung-Karangbolong Menggunakan Metode Manual Dan Otomatis Asih, Nevi Tri Lestiyo; Sasmito, Bandi; Sabri, L.M.; Ansori, Chusni
Jurnal Geodesi Undip Vol 12, No 3 (2023): Jurnal Geodesi Undip
Publisher : Departement Teknik Geodesi Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jgundip.2023.38590

Abstract

Geopark Karangsambung-Karangbolong merupakan Kawasan yang ditetapkan oleh Kementerian Energi dan Sumber Daya Mineral Indonesia (ESDM) atas usulan Pemerintah Daerah Kebumen setelah mendapat rekomendasi dari Komite Geopark Nasional Indonesia (KNGI). Geopark Karangsambung-Karangbolong terletak di Kabupaten Kebumen, Jawa Tengah dengan luas 543,599 km2. Kawasan ini memiliki bentang alam struktural di utara dalam bentuk lipatan, patahan, kekar, dan kombinasi struktur dengan proses denudasi. Serta bentang alam karst berada di wilayah selatan yaitu Gombong. Struktur geologi dan kenampakan morfologi yang beragam di Kawasan Geopark Karangsambung-Karangbolong memungkinkan untuk dilakukan identifikasi kelurusan. Ekstraksi kelurusan dapat dilakukan dengan menggunakan data penginderaan jauh dengan menggabungkan metode manual dan otomatis. Metode manual menggunakan data DEMNAS yang dilakukan hillshade sedangkan metode otomatis menggunakan data Citra Sentinel-1 yang dilakukan sobel directional filtering dan pengolahan dengan modul LINE. Kelurusan di Kawasan Geopark Karangsambung-Karangbolong yang didapat dengan mengkombinasikan metode ekstraksi manual dan otomatis menghasilkan jumlah kelurusan akhir 4.129. Kelurusan yang terekstraksi memilik arah barat laut – tenggara (NW – SE) dan arah timur laut – barat daya (NE – SW). Kelurusan di dominasi pada topografi kelerengan curam dan sangat curam. Perhitungan Total Accuracy (TA) didapat sebesar 23,547%. Kombinasi estraksi kelurusan secara manual dan otomatis dapat menghasilkan kelurusan yang saling melengkapi yang dapat digunakan untuk identifikasi struktur geologi. Dimana struktur patahan yang dapat diidentifikasi sejumlah 124, struktur lipatan sejumlah 5, dan struktur retakan sejumlah 4.001 yang tersebar di Kawasan tersebut.
KAJIAN GEOLOGI BAWAH PERMUKAAN FORMASI KARANGSAMBUNG SERTA FORMASI TOTOGAN DAN HUBUNGANNYA DENGAN AKUIFER AIRTANAH DI DESA KALISANA KABUPATEN KEBUMEN Mareta, Nandian; Ansori, Chusni
Bulletin of Scientific Contribution: GEOLOGY Vol 18, No 1 (2020): Bulletin of Scientific Contribution : GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (938.501 KB) | DOI: 10.24198/bsc geology.v18i1.26531

Abstract

AbstractKarangsambung-Totogan Formation is the most exposed rock unit in Kalisana Village, Karangsambung, Kebumen. These two formations also form the bedrock of the study area, which consists of claystone. The Karangsambung-Totogan Formation is composed of sedimentary groups which are mixed up due to the gravity process known as Olistostrome. Pieces of centimeter to hundreds of meters of sedimentary rocks are scattered randomly during the scaly clay matrix. Kalisana Village is around 20 kilometers from the center of Kebumen Regency. Kalisana Village has an area of 349 hectares, with 109.86 hectares of rice fields and 239.14 hectares of dry land. Rice field area consists of irrigated and non-irrigated rice fields. Every year this research area often experiences water shortages during the dry season. The purpose of this study is to get a reference in making decisions to overcome the shortage of raw water in areas affected by drought through groundwater sources. The research methods include the preparation stage (literature study, previous research studies, preparation of tools, review of maps, etc.), field orientation, field work/measurements, data compilation, data analysis, evaluation and data processing. The results obtained three geological rock units namely; claystone associated with the Karangsambung Formation, a fragmented claystone unit associated with the Totogan Formation and breccias associated with the Waturanda Formation. Based on the geoelectric sonding results at three sounding locations, a subsurface image is obtained. At first sonding was found sandstones at depth of 11-18 meters with an aquifer thickness of about 7 meters. Correlation of tree geoelectric sonding location successfully described the subsurface of the Karangsambung-Totogan Formation which forms the base. The maximum geoelectric depth is around 120 meters. Keyword: Karangsambung Formation, Totogan Formation, Karangsambung, Geoelectric, aquifer AbstrakFormasi Karangsambung-Totogan merupakan satuan batuan yang paling banyak tersingkap di Desa Kalisana, Karangsambung, Kebumen. Dua formasi ini juga menjadi batuan alas di lokasi penelitian, yang terdiri dari batulempung. Formasi Karangsambung-Totogan tersusun oleh kelompok sedimen yang tercampur aduk karena proses pelongsoran gaya berat yang dikenal dengan istilah Olistostrome. Bongkah-bongkah batuan sedimen berukuran centimeter hingga ratusan meter tersebar secara acak dalam masadasar lempung hitam bersisik (scaly clay). Desa Kalisana berjarak sekitar 20 Kilometer dari pusat Kabupaten Kebumen. Desa Kalisana mempunyai luas 349 Ha, dengan luas lahan sawah 109,86 Ha dan lahan kering seluas 239,14 Ha. Luas lahan sawah terdiri dari sawah irigasi dan non-irigasi. Setiap tahun lokasi penelitian ini sering mengalami kekurangan air saat musim kemarau. Maksud penelitian ini adalah mendapatkan acuan dalam pengambilan keputusan untuk mengatasi kekurangan air baku pada daerah yang terdampak kekeringan melalui pencarian sumber airtanah. Metode penelitian meliputi tahap persiapan (studi pustaka, studi penelitian terdahulu, persiapan alat, penelaahan peta-peta, dan lain-lain), orientasi lapangan, pekerjaan lapangan/pengukuran, kompilasi data, analisis data, evaluasi dan pengolahan data. Hasil yang didapatkan berupa tiga satuan batuan geologi yaitu; batulempung yang berkorelasi dengan Formasi Karangsambung, satuan batulempung berfragmen yang berkorelasi dengan Formasi Totogan dan breksi yang termasuk Formasi Waturanda. Berdasarkan hasil geolistrik di tiga lokasi sounding didapatkan gambaran bawah permukaan. Di lokasi sonding 1 ditemukan lapisan batupasir pada kedalaman 11-18 meter dengan ketebalan akuifer sekitar 7 meter. Korelasi 3 titik sonding geolistrik berhasil menggambarkan bawah permukaan Formasi Karangsambung-Totogan yang menjadi alas tersebut. Kedalaman maksimal geolistrik sekitar 120 meter.Kata kunci: Formasi Karangsambung, Formasi Totogan, Karangsambung, Geolistrik, akuifer
Co-Authors ., Gurharyanto A Wardhani, Fitriany Asih, Nevi Tri Lestiyo Bandi Sasmito Farisan, Ardhan Fitriyana, Deni Fajar Godang, Shaban Hadian, M Sapari Dwi Hastria, Defry Hastria, Defry Hermawan, Nandian Mareta Hindarto, Teguh I Dewa Gde Mayun Permana Isyqi, Isyqi Lubis, Rachmat F Meiartha, REGA Nandian Mareta, Nandian P Saputro, Sugeng Puguh Dwi Raharjo Rusiyanto, R. Sabri, L.M. Saefudin Saefudin Setiadi, Rizki Siregar, Januar Parlaungan Sudiyono, S. Wardhani, Fitria Amalia Wardhani, Fitriany Amalia