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All Journal Jurnal Geodesi Undip Journal of Science and Applicative Technology Jurnal Geografi Elipsoida : Jurnal Geodesi dan Geomatika Journal of Multidisciplinary Academic Jurnal Geosaintek
Lea Kristi Agustina
Geomatemathics Engineering, Department Of Industrial Technology, Institut Teknologi Sumatera, South Lampung, Indonesia
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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APLIKASI SISTEM INFORMASI GEOGRAFIS UNTUK IDENTIFIKASI POTENSI LOKASI PAPAN IKLAN DI WILAYAH KOTA SEMARANG Lea Kristi Agustina; Bambang Sudarsono; Andri Suprayogi
Jurnal Geodesi UNDIP Volume 1, Nomor 1, Tahun 2012
Publisher : Departement Teknik Geodesi Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1657.102 KB)

Abstract

Advertising is designed objects for the purpose of introducing, encouraging, promoting, or to draw public attention to goods, services, persons, or entities who can be seen, read, heard, felt and / or enjoyed by the public. In simple billboard interpreted as promotion tool of goods and services such as a message or information delivered through the outdoor media. The situation is quite crowded roads in Semarang City, especially in Gajah Mada, Pandanaran  and Pemuda street’s which makes existence of billboard to be one competition for providers of goods or services in order to alluring consumers in order to use the goods and services offered by them. This research aim to know the potential of billboard locations and spread along the Gajah Mada, Pandanaran and Pemuda street’s. Final results from this research provides information that can be used as review and consideration in determining the location of billboards is quite potentially, this can be done by certain agencies of local government in Semarang City and other interested parties. This research conducted by qualitative research methods which will produce descriptive data were compiled in a geographic information system to obtain map of the layout point locations spread advertisement, then performed an analysis based on the provisions of the distance between advertisement and restrictions the placement of advertisement. Based on the observation and analysis, identification potential of new billboard point locations can be done according with the specified criteria. Research results show there were 11 point of potential new billboards for the large billboard type and there are 73 point of potential new billboards to billboard medium sized types, both located on the sidewalks / curb.
Lithology Identification Using Electrical Resistivity Tomography Case Study: OAL’s Construction Site Erlangga Ibrahim F.; Andri Yadi Paembonan; Cahli Suhendi; Hikhmadhan Gultaf; Virgian Rahmanda; Lea Kristi Agustina; Hendra Saputra; Maria R.P. Sudibyo; Reza Rizki
Journal of Multidisciplinary Academic Vol 3, No 2 (2019): Special Issue in Multidisciplinary Academics related Astronomy Background
Publisher : Penerbit Kemala Indonesia

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Abstract

Observatory Astronomy Lampung construction site is located at Mountain Betung, North – West of Lampung City. From geomorphology investigation, Mount Betung landscaped classified as volcanic mountain with pyroclastic flow mountaincharacteristics. Geological setting of this area showed those dominant lithology is pyroclastic, including andesite and breccia rocks. These feature correlate with our investigation around OAL construction site. We applied electrical resistivity tomography to investigate subsurface soil electrical properties. The result indicated that there are two different lithology, high resistivity in the top soil and low resistivity below. High resistivity suspected as pyroclastic deposit with a lot of volcanic rocks fragment, whereas the low resistivity suspect as volcanic deposit with high – saturated water, which indicated as clay
IDENTIFIKASI KAWASAN RAWAN LONGSOR BERDASARKAN KARAKTERISTIK BATUAN PENYUSUN DI KOTA BANDAR LAMPUNG Lea Kristi Agustina; Danni Gathot Harbowo; Bilal Al Farishi
Elipsoida : Jurnal Geodesi dan Geomatika Vol 3, No 01 (2020): Volume 03 Issue 01 Year 2020
Publisher : Department of Geodesy Engineering, Faculty of Engineering, Diponegoro University,Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (410.113 KB) | DOI: 10.14710/elipsoida.2020.7769

Abstract

Kota Bandar Lampung memiliki topografi yang cukup beragam berupa lembah maupun punggungan bukit, dalam perkembangannya banyak kawasan pemukiman yang tersebar diantara perbukitan. Bencana longsor merupakan salah satu bencana yang sering terjadi di Indonesia. Perlu adanya kajian daerah rawan longsor beserta mitigasi bencana secara spesifik yang menjadi langkah konkrit dalam mengurangi angka korban jiwa maupun materi. Banyak faktor yang mempengaruhi rawan bencana longsor, yaitu: tingkat kemiringan dari kelerengan, tutupan lahan, jenis batuan dan tanah, serta didukung dengan data kejadian sebelumnya. Gambaran permukaan bumi khususnya daerah rawan longsor dapat direpresentasikan dalam peta, diawali dengan disusunnya dataset fundamental berdasarkan parameter yang berpengaruh kejadian longsor. Setiap parameter yang mempengaruhi kejadian longsor yang digunakan memiliki besar bobot yang berbeda dan terangkum dalam metode tumpang susun (Overlay). Meninjau area rawan di Kota Bandar Lampung terdapat sisa endapan gunungapi menghasilkan geomorfologi bukit terjal dimana penyusun batuannya adalah tuff dan breksi, yang kini bisa diamati di Kota Bandar Lampung, diantaranya adalah Bukit Sulah Sukarame, Bukit Koga Kedaton, Bukit Kaliawi dan Bukit Randu Tanjungkarang. Selain itu, terdapatnya banyak sesar yang berarah NW-SW sejajar orientasi Teluk Lampung, beberapa bukit di sekitarnya memiliki morfologi dengan curam. Batuan penyusunnya pun memiliki banyak rekahan, sehingga cenderung menjadikan lereng menjadi tidak stabil. Inilah yang membuat beberapa daerah di Kota Bandar Lampung rawan terjadi longsor.
APPLICATION OF SPOT6/7 SATELLITE IMAGERY FOR RICE FIELD MAPPING BASED ON TRANSFORMATIVE VEGETATION INDICES Nirmawana Simarmata; Zulfikar Adlan Nadzir; Lea Kristi Agustina
JURNAL GEOGRAFI Vol 14, No 1 (2022): JURNAL GEOGRAFI
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jg.v14i1.29036

Abstract

Agriculture plays an essential role in national economic development. This fact made agricultural land one of the main unique production factors irreplaceable due to its importance in the agricultural business processes. However, a persistent problem of arable land conversion and land degradation have become more massive throughout the years. Meanwhile, the continuation of existing agricultural land and transformation into new agricultural land is inherently small. This research aimed to map agricultural land in sustainable agricultural development. Several transformative vegetation indices: NDVI, SAVI, and TSAVI, applied SPOT 6/7 satellite imagery in Lampung Province. Results show that the TSAVI value is the highest, with a 1.80 value, which indicates that this index value is very dense vegetation. Meanwhile, the NDVI index, which has a minimum value of -1.02, suggests that this index value is a non-vegetation object. However, high or low value does not indicate the rigorousness and Accuracy of an index. All three indices’ results are then overlaid with the satellite imagery classification process result. The accuracy result shows that the agricultural land has a maximum of 100% producer accuracy while the user accuracy value is 87.87%. Overall, for NDVI, the Accuracy was valued at 90.25%, which could be classified as a reasonable classification result. SAVI has a PA value of 97.85%, UA 85.20% and OA 86.63%, while the TSAVI Index has a PA value of 98.23%, UA 86.16% and OA 87.63%. This accuracy value indicates that the map has good results but judging from the magnitude of the highest accuracy value obtained from NDVI, it can be concluded that NDVI is the best index to determine paddy fieldsKeywords: Agricultural Land, SPOT 6/7, NDVI, SAVI, TSAVI.
Preliminary Result: Identification of Landslides using Electrical Resistivity Tomography Case Study Mt. Betung Erlangga Ibrahim; Hikhmadhan Gultaf; Hendra Saputra; Lea Kristi Agustina; Virgian Rahmanda; Cahli Suhendi; M. R. P. Sudibyo; Reza Rizki
Journal of Science and Applicative Technology Vol 2 No 1 (2019): ICoSITeR Special Edition
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (451.66 KB) | DOI: 10.35472/281455

Abstract

Institut Teknologi Sumatera (ITERA), ITB and local governments had been cooperated in establishing an astronomy observatory of ITERA Lampung (OAIL), which was located at Mt. Betung in the Pasawaran area. Geological setting of this area showed that the dominant lithology of Mt. Betung is pyroclastic, andesite, and breccia rocks. These volcanic deposits have the potential to move the materials down-slope by the force of gravity, steep slope, and high water-content. We have investigated some area with the potential of a landslide along OAIL construction area, which may be the cause of the landslip as well. We applied electrical resistivity tomography to analyse the electrical properties of the subsurface soil and determine the vulnerable area of the landslide. The result indicated that the area is divided into high resistivity at the top of the soil and low resistivity below. These high resistivity numbers are caused by pyroclastic flow while the lower one is caused by fracture-filled, mostly with water and clay.
Identifikasi Struktur Geologi dan Petrografi di sekitar Observatorium Astronomi Lampung Gunung Betung Hendra Saputra; Luhut P. Siringorongo; Cahli Suhendi; Lea Kristi Agustina
Journal of Science and Applicative Technology Vol 4 No 2 (2020): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v4i2.265

Abstract

Lampung Astronomical Observatory (LAO) is located on Betung Mountain which is quite close to the Semangko active fault zone. Betung Mountain is part of the Bukit Barisan which is located west of the city of Bandar Lampung. This mountain has an altitude of about 1200 meters above sea level. There are 6 interesting stations. Most of the stations are located on the upper slopes of Betung Mountain. In the Talang Aji area, there are 2 springs. The other 4 stations consist of waterfalls with varying heights: Talang Teluk waterfall (30 m), Talang Rabun waterfall (20 m), Betung waterfall consists of two minor terraced waterfalls with a height of 5 and 10 m respectively, and Kubu Jambu waterfall (12 m). In general, the orientation of the faults of Mt. Betung was northeast-southwest. The faults are also associated with several waterfalls found in the field. From the joint data processing, it can be interpreted that the fault formed on Betung Mountain is normal. The lithology of Betung Mountain is dominated by volcanic deposits in the form of tuffs. In certain rivers, there are outcrops of lava igneous rock in the form of Andesites. Andesite lava in the northern and southern parts of Betung Mountain has different characteristics.
INTEGRASI PEMETAAN ANCAMAN, KERENTANAN, DAN KAPASITAS DALAM KAJIAN RISIKO GEMPABUMI DAN TSUNAMI DI PESAWARAN, LAMPUNG Zulfikar Adlan Nadzir; Nirmawana simarmata; Lea Kristi Agustina; Mutia Rahma Apriani
Jurnal Geosaintek Vol. 10 No. 2 (2024)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25023659.v10i2.1858

Abstract

Pesawaran adalah nama dari sebuah kabupaten di Provinsi Lampung. Pada kabupaten ini terdapat sesar lokal dan area pesisir yang berbatasan langsung dengan Selat Sunda, sehingga rawan terjadi gempabumi dan tsunami. Penelitian ini bertujuan untuk menganalisis tingkat risiko dari gempabumi dan tsunami di Kabupaten Pesawaran menggunakan indeks ancaman, kerentanan, dan kapasitas. Metode yang digunakan adalah Probabilistic Seismic Hazard Analysis (PSHA) untuk pembuatan peta ancaman gempabumi dan perhitungan Hloss untuk pembuatan peta ancaman tsunami. Hasil penelitian menunjukkan bahwa bencana gempabumi Kabupaten Pesawaran memiliki risiko rendah hingga sedang. Tidak ada indeks risiko tinggi gempa bumi di Kabupaten Pesawaran. Hal ini dikarenakan indeks ancaman dan kerentanan berada pada kategori rendah hingga sedang, dan indeks kapasitas berada pada kategori tinggi. Indeks risiko sedang dengan luas terbesar berada di Desa Bogorejo, Gedong Tataan seluas 2.695,02 ha. Sedangkan, untuk bencana tsunami hanya berpotensi di beberapa kelurahan yang terletak di Kecamatan Teluk Pandan, Punduh Pidada, Padang Cermin, dan Marga Punduh. Hampir seluruh wilayah tersebut memiliki indeks ancaman yang tinggi, namun indeks risikonya sebagian besar berada pada kategori rendah hingga sedang, hanya sebagian kecil yang memiliki risiko tinggi tsunami. Hal ini dikarenakan indeks kerentanan berada pada kategori rendah hingga sedang, dan indeks kapasitas berada pada kategori tinggi. Sehingga, meskipun ancaman di wilayah tersebut tinggi, namun risikonya dapat diperkecil  karena minimnya kerentanan ditambah dengan kapasitas yang tinggi. Salah satu wilayah yang memiliki indeks risiko tsunami adalah Desa Persiapan Dantar, Kecamatan Padang Cermin dengan luas sebesar 349,42 ha.
Co-Authors Andri Suprayogi Andri Yadi Paembonan Bambang Sudarsono Bilal Al Farishi Danni Gathot Harbowo Erlangga Ibrahim Erlangga Ibrahim F. Hendra Saputra Hendra Saputra Hendra Saputra Hikhmadhan Gultaf Hikhmadhan Gultaf Luhut P. Siringorongo M. R. P. Sudibyo Maria R.P. Sudibyo Mutia Rahma Apriani Nadzir, Zulfikar Adlan Reza Rizki Simarmata, nirmawana Suhendi, Cahli Virgian Rahmanda Virgian Rahmanda