1,720,977 research outputs found
Application of Lineament Density Extraction Based on Digital Elevation Model for Geological Structures Control Analysis in Suwawa Geothermal Area
Full text linkThe tectonic condition of Gorontalo, which is located in the north of Sulawesi Island has implications for the spread of geothermal potential. The area in Gorontalo with the largest geothermal potential is the Suwawa area, Bone Bolango Regency. Therefore, this study aims to develop a model of lineament extraction from a digital elevation model and analyze the geological structure control based on the lineament distribution. This research is useful for the development of knowledge in the geothermal field, especially the study of permeability and structural control in geothermal areas. This research is beneficial for the community because it can detect the permeability zone in more detail which is the basis for the utilization of geothermal potential. The factors studied in this study are the geological lineament density and the geological structures. To achieve the research objectives, extraction methods and model analysis include analysis of permeable and control of geological structures. The lineament extraction model from the digital elevation model in the Suwawa geothermal area shows that there is a moderate to high agreement for lineament extraction from NATIONAL DEM data and low to moderate agreement for lineament extraction from SRTM data. The lineament distribution showing moderate to high density occupies the southern, eastern, and western parts of the Suwawa geothermal area. The presence of a lineament controls the circulation of geothermal fluids in the Suwawa geothermal area
Subsurface Shallow Modelling Based on Resistivity Data in The Hot Springs Area of Libungo Geothermal, Gorontalo, Indonesia
Full text linkVolcano-tectonic events in Libungo can be the cause of the presence of geothermal potential. There is no detailed research on shallow subsurface conditions in Libungo that can show the distribution of subsurface fluids. This research aims to create a shallow subsurface model of the Libungo geothermal area based on resistivity data. Resistivity data collection was carried out in the Libungo hot springs area. The electrode configuration used is the Schlumberger configuration. The variation in resistivity values is calculated using current data, potential difference data and geometry factors. The results of the calculation of the resistivity values variation are plotted versus depth. Variations of resistivity value versus depth are then displayed in the form of a single log, lithology distribution and 3D lithology model. The results showed that the shallow subsurface of the Libungo geothermal area was composed of andesite, volcanic breccia, silty clay and clay. Andesite in the research area has resistivity values ranging from 320 - 349 Ωm, has slightly fracture and is andesite dry. Volcanic breccia has a resistivity value of 177-198 Ωm, has a well to slightly fracture and is a volcanic breccia moist. Silty clay has a resistivity value of 3.25-37.99 Ωm and is a wet to moist silty clay. Clay has resistivity values in the range 1.56-2.78 Ωm and is wet to moist clay. Fluid distribution in the shallow subsurface area occurs in volcanic breccia, silty clay and clay. Shallow subsurface fluids accumulate mostly in the northern part of the Libungo geothermal area
Optimalisasi Potensi Wisata dan Pengurangan Resiko Bencana di Desa Pentadio Barat untuk Mendukung Pembangunan Berkelanjutan Daerah Dataran Danau Limboto, Kabupaten Gorontalo
Full text linkBerbah adalah sebuah kecamatan di Kabupaten Sleman, Provinsi Daerah Istimewa Yogyakarta, Indonesia. Dalam hal kemajuan pendidikan usia dini terdapat beberapa taman kanak-kanak (TK) di kecamatan berbah diantaranya TK PANTI DEWI. Permasalahan yang dihadapi oleh mitra yaitu penilaian rapor hingga saat ini masih menggunakan teknik konvensional ditulis penilaian deskriptif secara manual sehingga membutuhkan waktu yang cukup tinggi dalam prosesnya. Hal lain adalah gaya penulisan yang berbeda-beda jika ditulis manual dan beberapa masalah human error baik dari sisi orang tua ataupun guru-guru. Solusi yang ditawarkan tersedianya sebuah website rapor online yang dapat dijadikan sebagai media penunjang dalam penilaian rapor, serta pendampingan pelatihan pengoperasian menggunakan komputer untuk meningkatkan kemampuan guru-guru TK Panti Dewi. Dalam kegiatan ini dilakukan juga pendampingan terhadap orang tua anak didik dalam penerimaan rapor menggunakan website. Dengan adanya program ini pada akhir pelaksanaan kegiatan mitra mampu meningkatkan efisiensi waktu penilaian rapor penulisan rapor hasil ajar menjadi lebih efektif dan efisien bahkan memberikan invoasi baru bagi orang tua jaman milenial yang anak-anaknya sekolah TK di Panti Dewi saat ini yakni dapat menerima rapor anak dalam bentuk softcopy secara online serta dapat unduh sendiri melalui gadget yang dimilikiBerbah adalah sebuah kecamatan di Kabupaten Sleman, Provinsi Daerah Istimewa Yogyakarta, Indonesia. Dalam hal kemajuan pendidikan usia dini terdapat beberapa taman kanak-kanak (TK) di kecamatan berbah diantaranya TK PANTI DEWI. Permasalahan yang dihadapi oleh mitra yaitu penilaian rapor hingga saat ini masih menggunakan teknik konvensional ditulis penilaian deskriptif secara manual sehingga membutuhkan waktu yang cukup tinggi dalam prosesnya. Hal lain adalah gaya penulisan yang berbeda-beda jika ditulis manual dan beberapa masalah human error baik dari sisi orang tua ataupun guru-guru. Solusi yang ditawarkan tersedianya sebuah website rapor online yang dapat dijadikan sebagai media penunjang dalam penilaian rapor, serta pendampingan pelatihan pengoperasian menggunakan komputer untuk meningkatkan kemampuan guru-guru TK Panti Dewi. Dalam kegiatan ini dilakukan juga pendampingan terhadap orang tua anak didik dalam penerimaan rapor menggunakan website. Dengan adanya program ini pada akhir pelaksanaan kegiatan mitra mampu meningkatkan efisiensi waktu penilaian rapor penulisan rapor hasil ajar menjadi lebih efektif dan efisien bahkan memberikan invoasi baru bagi orang tua jaman milenial yang anak-anaknya sekolah TK di Panti Dewi saat ini yakni dapat menerima rapor anak dalam bentuk softcopy secara online serta dapat unduh sendiri melalui gadget yang dimilik
Kajian Geologi Daerah Panas Bumi Lombongo Kabupaten Bone Bolango Provinsi Gorontalo
Full text linkKabupaten Bone Bolango merupakan daerah yang mulai berkembang sehingga dibutuhkan pasokan energi listrik seperti energi panas bumi untuk menunjang perkembangan. Tujuan dari penelitian ini adalah untuk mengkaji kondisi geologi daerah panas bumi Lombongo. Lokasi penelitian terletak pada koordinat 0°32' LU - 0°32'40” LU dan 123°10'40” BT - 123°11'40” BT. Kajian dilakukan terhadap manifestasi panas bumi, litologi, morfologi, flow net, dan hidrogeologi daerah penelitian. Pengamatan manifestasi panas bumi berupa sifat fisik air panas dan sifat kimia air panas. Pengamatan litologi dan morfologi meliputi pengamatan mineral dan bentuklahan. Pengamatan hidrogeologi berupa flow net, daerah recharge, daerah discharge, dan daerah limpasan permukaan. Manifestasi panas bumi yang ada di daerah Lombongo berupa mata air panas dengan suhu terukur di lapangan 420C-480C. Pemunculan mata air panas di daerah Lombongo di kontrol oleh sesar mendatar yang melewati batuan tersebut. Litologi daerah Lombongo dan sekitarnya terdiri dari batuan vulkanik berupa andesit dan batuan intrusif berupa diorit. Geomorfologi daerah Lombongo dan sekitarnya terdiri dari Satuan Pegunungan Vulkanik, Satuan Perbukitan Denudasional dan Satuan Dataran Fluvial. Daerah rechange berada pada pegunungan yang ada di bagian utara daerah penelitian sedangkan daerah discharge berada di bagian selatan daerah penelitian. Kajian geologi daerah penelitian menunjukkan bahwa sumber panas berasal dari sisa panas tubuh vulkanik yang memanaskan air tanah di reservoar dan keluar ke permukaan melalui sesar mendatar
Lineament Extraction Analysis Using Digital Elevation Model (DEM) in Lahendong Geothermal Area, North Sulawesi
Full text linkSulawesi is located in the triple junction which makes it has a high complex tectonic setting implicated for the emergence of geothermal potential. Existing geological structure near the research area is only in the top-right of the research area which far from any of the hot spring points. This research aims to analyze the lineament extraction to find out the alleged structure and the density area to determine the permeability of the Lahendong geothermal area using National Digital Elevation Model (DEMNAS) data imagery. Digital Elevation Model (DEM) data is processed using Remote Sensing Photogrammetry application to produce lineament extraction. Lineament density map is carried out using a Geographic Information System (SIG) application and then processed to generate rosette diagram. Based on the lineament extraction and lineament density analysis result, we can interpret that the Lahendong geothermal area is dominated with high density, which is interpreted as good permeability. Lineaments in the Lahendong geothermal area is northwest-southeast and almost north-south. The extracted lineament is also providing the alleged structure in the research area
Geomorphological Study of the Talumopatu Geothermal Area Gorontalo Regency Gorontalo Province
Full text linkGeomorphological research is urgently needed to be carried out in areas with geothermal potential such as in Talumopatu. Geomorphological analysis was chosen to complete the data in the early stages of the geothermal exploration of the study area. The purpose of this study was to determine the geomorphological characteristics of the study area. This study uses image interpretation methods and field excursions to observe the morphology of the study area. The stages of data processing use software applications based on Geographic Information Systems (GIS). The Geomorphological analysis consists of analysis of morphography, morphometry and morphogenesis. The analysis results are then compiled to produce a geomorphological map that refers to the van Zuidam classification. In accordance with the results of the analysis, it can be concluded that the geomorphological condition of the study area is divided into three parts, namely the Alluvial Plain Unit, Peneplains Unit, and Residual Hills Unit
Analisis Parameter Gempabumi Dengan Struktur Geologi Di Daerah Asparaga, Gorontalo
Full text linkGorontalo is an area located in the North Arm of Sulawesi which has a complex geological structure as a result of the submergence of the Sulawesi Sea and East Sangihe so that this area is considered an earthquake-prone area. The existence of the regional structure and the mapping of the earthquake point distribution is interesting to be studied more deeply because it affects seismic activity in the area. The purpose of this study is to analyze earthquakes in the Asparaga area based on their depth and magnitude and to relate them to the geological structures found in the study area. The earthquake data used were obtained from USGS. Satellite image data used is the SRTM satellite image. Earthquake data is mapped to produce depth maps, magnitude maps, and earthquake zoning maps. Lineament data were processed using a rosette diagram. Lineament can reflect the morphology observed on the earth's surface as a result of the activity of geological forces. The results showed that the Asparaga area had shallow earthquake depths and moderate to large magnitudes. The focus of the earthquake was right on the path traversed by the geological structure and its relatively northwest-southeast direction. The geological structure in the research location is the epicenter of the earthquake because it is crossed by regional geological structures
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
- …
