Article Per Year (5 Year)
p-Index From 2019 - 2024
0.444
P-Index
This Author published in this journals
All Journal Indonesian Journal of Geography JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards)
Nandian Mareta, Nandian
Unknown Affiliation
Earth & Planetary Sciences Environmental Science

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
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.
Gambaran Pemanfaatan Air Tanah Berkelanjutan di Geopark Kebumen Utara Mareta, Nandian; Lubis, Rachmat Fajar
Jurnal Lingkungan dan Bencana Geologi Vol 14, No 3 (2023)
Publisher : Badan Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34126/jlbg.v14i3.483

Abstract

Kebumen terletak di Provinsi Jawa Tengah yang telah ditetapkan sebagai Geopark Nasional pada tahun 2018. Geopark Kebumen, yang kemudian diajukan sebagai UNESCO Global Geopark pada tahun 2023, diharapkan akan meningkatkan jumlah kunjungan wisatawan dan peneliti ke kabupaten ini. Peningkatan ini memiliki konsekuensi penting dalam menjamin ketersediaan potensi air bersih yang memadai. Makalah ini menghitung ketersediaan potensi airtanah di Bagian Utara Geopark Kebumen dengan membandingkan Atlas Ketersediaan Airtanah yang telah dipublikasikan terhadap hasil penelitian neraca air di DAS Welaran, yang merupakan wilayah Geopark Kebumen Bagian Utara. Hasil penelitian menunjukkan atlas ketersediaan airtanah memiliki dua predikat, yaitu ketersediaan airtanah rendah di bagian Utara dan ketersediaan airtanah sedang di bagian Tengah dan Selatan. DAS Welaran, yang terletak di bagian Utara, sesuai dengan predikat rendah dalam atlas ketersediaan airtanah. Hasil ketersediaan airtanah menurut Atlas adalah sebesar 1.554.205,81 m3, sedangkan menurut Neraca Air DAS Welaran sebesar 1.555.318 m3. Rasio ketersediaan airtanah antara Atlas dan Neraca Air DAS Welaran adalah 0,999. Peluang pemanfaatan airtanah masih memungkinkan di bagian Selatan, sementara di bagian Utara lebih disarankan untuk memanfaatkan air permukaan dan airtanah bebas sebagai strategi pemanfaatan air baku.
Co-Authors Chusni Ansori Farisan, Ardhan Hadian, M Sapari Dwi Lubis, Rachmat F P Saputro, Sugeng Rachmat Fajar Lubis