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All Journal Jurnal Pembangunan Wilayah dan Kota BERKALA FISIKA SAINS DAN MATEMATIKA YOUNGSTER PHYSICS JOURNAL Jurnal Sains dan Teknologi ECSOFiM (Economic and Social of Fisheries and Marine Journal) Jurnal Kelautan Tropis AGRIKAN Jurnal Ilmiah Agribisnis dan Perikanan Jurnal Penelitian Pendidikan IPA (JPPIPA) INDONESIAN JOURNAL OF APPLIED PHYSICS Albacore : Jurnal Penelitian Perikanan Laut Jurnal Perikanan Universitas Gadjah Mada Jurnal Akuatiklestari Journal of Physics and Its Applications Jurnal Kebijakan Perikanan Indonesia Buletin Ilmiah Marina : Sosial Ekonomi Kelautan dan Perikanan Habitus Aquatica : Journal of Aquatic Resources and Fisheries Management Jurnal Energi Baru dan Terbarukan Eksergi: Jurnal Teknik Energi Agrikan: Jurnal Agribisnis Perikanan Policy Brief Pertanian, Kelautan, dan Biosains Tropika Lempuk: Jurnal Ilmu Kelautan dan Perikanan
Gatot Yulianto
Departemen Fisika, Fakultas Sains Dan Matematika, Universitas Diponegoro
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Karakterisasi Daerah Rawan Gerakan Tanah di Lapangan Pandanmurti Desa Candigaron Kecamatan Sumowono Kabupaten Semarang dengan Metode Mikrotremor Sasongko, Dwi Purwantoro; Yulianto, Gatot; Arifin, Zaenal
Jurnal Pembangunan Wilayah dan Kota Vol 16, No 2 (2020): JPWK Vol 16. No. 2 June 2020
Publisher : Universitas Diponegoro, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/pwk.v16i2.26401

Abstract

Gerakan tanah di Lapangan Pandanmurti, Desa Candigaron, Kecamatan Sumowono, Kabupaten Semarang berupa tanah retak dan sebagian mengalami penurunan tanah. Untuk mengindentifikasi daerah Gerakan tanah di lokasi peenlitian ini dilakukan survei mikrotemor dengan metode HVSR. Berdasarkan pemodelan 2D daerah yang mengalami Gerakan tanah terkarakterisasi oleh lapisan tanah dengan nilai amplifikasi lebih besar daripada 1 dengan rentang amplifikasi 1-6,5. Frekusensi dominan lapisan tanah lokasi penelitian terkarakterisasi mempunyai nilai 0,02-0,06 Hz. Berdasarkan pemodelan #D separasi berkas amblesan dengan bagian yang belum ambles dicirikan dengan adanya dikontinuitas di bagian selatan-tenggara dengan isovalue nilai frekuensi 1,36 Hz dan daerah yang tidak mengalami deformasi lebih lanjut dicirikan dengan isovalue nilai amplifikasi lebih besar dari 0,79. Berdasarkan kontur lokasi penelitian Gerakan tanah di lokasi penelitian bersifat rayapan (creeping).
Karakterisasi Daerah Rawan Gerakan Tanah di Lapangan Pandanmurti Desa Candigaron Kecamatan Sumowono Kabupaten Semarang dengan Metode Mikrotremor Sasongko, Dwi Purwantoro; Yulianto, Gatot; Arifin, Zaenal
Jurnal Pembangunan Wilayah dan Kota Vol 16, No 2 (2020): JPWK Vol 16. No. 2 June 2020
Publisher : Universitas Diponegoro, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/pwk.v16i2.26401

Abstract

Gerakan tanah di Lapangan Pandanmurti, Desa Candigaron, Kecamatan Sumowono, Kabupaten Semarang berupa tanah retak dan sebagian mengalami penurunan tanah. Untuk mengindentifikasi daerah Gerakan tanah di lokasi peenlitian ini dilakukan survei mikrotemor dengan metode HVSR. Berdasarkan pemodelan 2D daerah yang mengalami Gerakan tanah terkarakterisasi oleh lapisan tanah dengan nilai amplifikasi lebih besar daripada 1 dengan rentang amplifikasi 1-6,5. Frekusensi dominan lapisan tanah lokasi penelitian terkarakterisasi mempunyai nilai 0,02-0,06 Hz. Berdasarkan pemodelan #D separasi berkas amblesan dengan bagian yang belum ambles dicirikan dengan adanya dikontinuitas di bagian selatan-tenggara dengan isovalue nilai frekuensi 1,36 Hz dan daerah yang tidak mengalami deformasi lebih lanjut dicirikan dengan isovalue nilai amplifikasi lebih besar dari 0,79. Berdasarkan kontur lokasi penelitian Gerakan tanah di lokasi penelitian bersifat rayapan (creeping).
Welfare Level of Fishermen’s Household Around the Mangrove Ecosystem in Khairiah Mandah Village Mandela, Hades; Fahrudin, Achmad; Yulianto, Gatot
ECSOFiM (Economic and Social of Fisheries and Marine Journal) Vol 8, No 1 (2020): ECSOFiM Oktober 2020
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.ecsofim.2020.008.01.08

Abstract

The majority of fishermen are the small-scale group who are depending on marine resources which utilization results are unsettled so that this group vulnerable to a low welfare state. On the other hand, the abundant marine resources in the mangrove ecosystem have not been able to be managed optimally to improve the welfare of fishermen's household. Therefore, the purpose of this study is to measure the welfare state of fishermen's household around the mangrove ecosystem. This research was conducted in the Khairiah Mandah Village from December 2019 to January 2020 using a survey method. The technique was determining respondents using purposive sampling with 39 fishermen consisting of 13 fishermen who catch fish, 13 fishermen who catch shrimp, and 13 fishermen who catch crabs. Data analysis uses analysis of the level of family welfare with indicators of a prosperous family according to BKKBN. The results showed that the fishermen around the mangrove ecosystem were mostly in the Prosperous Family I group with a percentage of 56%. Besides, fishermen families who are in the Prosperous Family II group are 31%, Prosperous Family III is 8%, Pre-Prosperous Family is 5%, and none are included in the Prosperous Family III Plus group.
STRUKTUR KOMUNITAS IKAN TERUMBU KARANG PADA DAERAH PERLINDUNGAN LAUT DI PULAU SEBESI LAMPUNG Yudha, Firsta Kusuma; Yulianda, Fredinan; Yulianto, Gatot
JST (Jurnal Sains dan Teknologi) Vol 10, No 2 (2021)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (324.847 KB) | DOI: 10.23887/jst-undiksha.v10i2.40211

Abstract

Daerah Perlindungan Laut (DPL) merupakan salah satu konsep pengelolaan ekosistem pesisir di Pulau Sebesi, yang dibentuk untuk menekan tingkat kerusakan terumbu karang di Pulau Sebesi. Salah satu indikasi kerusakan terumbu karang ialah kehadiran ikan terumbu karang yang memanfaatkan terumbu karang sebagai habitat untuk hidup. Penelitian ini bertujuan untuk mengidentifikasi struktur komunitas ikan terumbu karang pada Pulau Sebesi sebagai bahan pengelolaan DPL Pulau Sebesi. Secara keseluruhan ditemukan 493 individu ikan terumbu karang yang termasuk 12 famili ikan terumbu karang. Famili Pomacentridae merupakan famili dengan komposisi tertinggi pada seluruh lokasi studi. Kelimpahan ikan terumbu karang terbanyak dijumpai di Pulau Umang, sedangkan terendah dijumpai pada Gosong Sawo. Jumlah jenis ikan terumbu karang di lokasi studi berkisar antara 11-21 spesies. Indeks keanekaragaman tertinggi dijumpai pada Pulau Umang. Hal ini menandakan Pulau Umang memiliki kelimpahan dan jenis ikan terumbu karang yang lebih banyak dibandingkan lokasi lain.
Kelimpahan dan Keanekaragaman Siput Laut Opisthobranch di Bangsring Underwater dan Pulau Tabuhan, Banyuwangi Rosyid, Abdur; Krisanti, Majariana; Yulianto, Gatot
JST (Jurnal Sains dan Teknologi) Vol 11, No 1 (2022)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jst-undiksha.v11i1.45048

Abstract

Siput laut memiliki manfaat ekologi, ekonomi, dan menjadi objek penting dalam penelitian di berbagai disiplin ilmu. Sebagai bagian dari gastropod yang berasosiasi dengan organisme sesil, siput laut menjadi indikator yang baik untuk kesehatan habitat di perairan. Belum ada penelitian mengenai siput laut di Bangsring Underwater dan Pulau Tabuhan. Penelitian ini bertujuan untuk mengidentifikasi dan menganalisis kelimpahan dan keanekaragaman spesies siput laut (Opisthobranchia) di lokasi tersebut. Pengambilan data dilakukan di 9 lokasi penyelaman. Data siput laut diambil menggunakan belt transect dan fotografi bawah air di kedalaman 0 sampai 10 m (dikateogikan sebagai dangkal) dan >10 sampai 18 m (dikategorikan sebagai dalam). Identifikasi dilakukan melalui foto bawah air dengan melihat morfologi, warna, bentuk rhinophores, notum (punggung), kaki, dan insang. Waktu pengambilan data dimulai pada bulan November sampai dengan Desember 2020. Hasil penelitian menunjukkan bahwa ditemukan 85 spesies dalam 19 famili dan 3 ordo (Nudibranchia, Sacoglossa, dan Cephalaspidea). Famili paling beragam adalah Chromodorididae (29% dari total spesies) dan Phyllidiidae (19%) dari ordo Nudibranchia. Frekwensi temuan spesies terbanyak adalah spesies P. pustulosa dan P. briareum. Keanekaragaman tertinggi terdapat di Rumah Apung dangkal dengan nilai H’= 4,2  sedangkan keanekaragaman terendah terdapat di Tabuhan Selatan dengan nilai H’= 1,0. Kelimpahan tertinggi terdapat di Zona inti dangkal dengan nilai 23 ind/200 m2, sedangkan kelimpahan terendah terdapat di Tabuhan Selatan, Tabuhan Timur, dan Tabuhan Barat dengan nilai yang sama yaitu 1 ind/200 m2.
Distributian of Depth and Clay-Silt to Sand Ratio of Land Subsidence in Coastal Semarang City by Resistivity Methods Sugeng Widada; Muhammad Zainuri; Gatot Yulianto; Sidhi Saputra; Baskoro Rochaddi
Jurnal Kelautan Tropis Vol 22, No 1 (2019): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (641.6 KB) | DOI: 10.14710/jkt.v22i1.4463

Abstract

Semarang City is the capital of Central Java province, located in the northern coast of Java island, Indonesia which is geologically composed of alluvial deposits. The natural consolidation of young alluvial deposits has caused a land subsidence. On the other hand, load of buildings and constructions causes an increase in the pressure of land surface, and finally, leads to an increase in the rate of land subsidence. The drilling data indicated that not all layers of lithology are soft layers supporting the land subsidence. A research  on the depth of soft litology and its percentage of hard lithology has not been conducted ever before. On the other side, an analysis regarding this kind of  research can be conducted based on resistivity method. Sounding system method with Schlumberger electrode configuration was selected for field data collection. The goals of this research were to  determine  the  resitivity of  lithology so that it can be used to interpretate distribution of depth  and clay-silt  to sand ratio of land subsidence area. The results showed that the area with  the depth of the upper layer of clay-silt   less than  3  m and clay-silt  to sand ratio less than  4   were the high land subsidence area.
STUDI ALIRAN FLUIDA MANIFESTASI PANAS BUMI DESA DIWAK DAN DESA DEREKAN, KECAMATAN BERGAS, KABUPATEN SEMARANG MENGGUNAKAN METODE TAHANAN JENIS 3D. Hotlan Simbolon; Udi Harmoko; Gatot Yulianto; Sugeng Widada; Yusuf D. H.; Sahid Sahid
Youngster Physics Journal Vol 4, No 1 (2015): Youngster Physics Journal Januari 2015
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (634.137 KB)

Abstract

This research use geolistric method that aims to analize the system of manifestation of fluida distribution geothermal on Diwak, Derekan Central Java, based on measurement of geolistric 3-D with pole - pole configuration, has been done. Data processing is performed using software Res3dinv and surfer which results in a horizontal and vertical cross-section. The results of the interpretation of 2D processed by software rockwork to obtain 3-D cross-section. The results showed that the measurement point 1, the direction of the fluid flow toward the east. Measurement point 2, the direction of flow of the fluid toward the northwest, the fluid flow direction to both of the points towards Lutung river. Keywords : Fluida, pole-pole konfiguration, Diwak, Derakan
PENENTUAN STRUKTUR BAWAH PERMUKAAN DENGAN MENGGUNAKAN METODE SEISMIK REFRAKSI DI LAPANGAN PANAS BUMI DIWAK DAN DEREKAN, KECAMATAN BERGAS, KABUPATEN SEMARANG Saiful Nurul Hudha; Udi Harmoko; Sugeng Widada; Yusuf D.H; Gatot Yulianto; Sahid Sahid
Youngster Physics Journal Vol 3, No 3 (2014): Youngster Physics Journal Juli 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (228.375 KB)

Abstract

A research of refraction seismic methods in Diwak and Derekan village, Bergas district , Semarang regency , Central Java has been done on March 30, 2013 and August 27, 2013. This research in order to determination the subsurface structure of a geothermal field Diwak and Derekan with refraction method. In this aquisision data the travel time data was a distance function, with Geometrics Model ES-3000 seismic refraction instrument with 8 Geophones. Processing and interpretation data used Hagiwara method. Hagiwara method used value of delay time concept from travel time curve.This interpretation which resulted shows the subsurface lithology of the study area Diwak v1 obtained for the first layer of 297 – 412 m/s which we interpret as a layer of alluvium.  While v2 on both layers obtained a value of 471 – 697 m/s which we interpret as soil. This research is the penetration depth of 5.84 - 11.7 m . The results obtained in the field structure of the two bedding Derekan, v1 to the first layer of 546 - 1011 m/s which is interpreted as alluvium. While v2 on both layers obtained a value of 1081 - 1714 m/s are interpreted with clay .Penetration that can be recorded on the field at 0.75 – 9.16 m .Keywords: sub surface structure, seismic refraction, Hagiwara method, Diwak, Derekan
ANALISIS STRUKTUR BAWAH PERMUKAAN DAERAH HARJOSARI KABUPATEN SEMARANG MENGGUNAKAN METODE GEOMAGNET DENGAN PEMODELAN 2D DAN 3D Mars Widodo; Tony Yulianto; Udi Harmoko; Gatot Yulianto; Sugeng Widada; Yusuf Dewantoro
Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (653.619 KB)

Abstract

Research of analysis subsurface structure in Harjosari Semarang district using geomagnet methods with 2D and 3D modelling. In this study, magnetic data acquisition was carried out in 93 points by using a PPM (Proton Precession Magnetometer) geometrics type of GSM 19T and 2 units geotron magnetometer G5 models to get the values of the total magnetic field. The result of measurement data is processed by the daily variation correction and IGRF correction (International Geomagnetic Reference Field). The corrected data has been used to create total magnetic anomaly contour. The total magnetic anomaly contour has been used to process reduction to plan surface. The result of reduction to plan surface has been used to create a contour upward continuation and then made reduction to the poles. The result of research showed the total magnetic anomaly closure pair of positive and negative indicated a fault zone below the surface. Result of research an incision on the closure pair of positive and negative to determine the subsurface structure of the region by creating a model of 2-dimensional (2D) using software Mag2DC. In 2D modeling result shows that was a fault zone below the surface about 210 to 1000 meters depth. The existence of the fault structure below the surface was estimated as a result of rock shifting from the northeastern area of research. Result of a 3-dimensional (3D) modelling using UBCMag3D software to determine subsurface structures more clearly by including error values, parameter values susceptibility and density models. On the results of the 3D display of subsurface structures found any difference in stark contrast to the susceptibility value at a depth of 225 meters to 1200 meters. The susceptibility value differences suspected presence of fault structures below the surface.
PEMODELAN INVERSI ANOMALI MAGNETIK 3D DAERAH MATA AIR PANAS DIWAK DAN DEREKAN Siti Zulaikhah; Udi Harmoko; Tony Yulianto; Gatot Yulianto; Sugeng Widada; Yusuf Dewantoro
Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1382.831 KB)

Abstract

Research of magnetic methods that aim to interpretation the subsurface structure around the hot springs area Diwak and Derekan and to identification caused of hot springs Diwak and Derekan has been successfully carried out. In this research, measurements were taken at 97 points using a proton precession magnetometer (PPM) type of GSM model 19T geometrics and two Geotron Magnetometer G5 models to get the value of the total magnetic field. Measurement data is processed by the daily variation correction and correction IGRF (International Geomagnetic Reference Field) to get the value of the total magnetic field anomaly. Corrected data used to create contours of the total magnetic field anomaly. Contour total magnetic field anomaly is used for the reduction to plan surface process and upward continuation process. The results of the upward continuation get the contours of local anomaly and regional anomaly, the results of the local anomaly contour then reduced to the pole. Results of the research is a pair of positive and negative closure indicate a fault structure below the surface. There are two pairs of positive and negative closure which an incision is made to determine the subsurface structure by creating a 2D model using the software Mag2dc. 2D modeling results indicate the existence of a second incision fault structure in the form of down trending fault southwest-northeast. Meanwhile, to make 3D models using software Mag3D and 3D modeling results indicate the presence of fault structures below the surface. Fault zone results of 2D and 3D modeling is a media outlet fluid to the surface in the form of hot springs Diwak and Derekan.
Co-Authors . Sahid . Zairion Abdur Rosyid Achmad Fahrudin Achmad Syaifuddin Zuhri Achmad Widodo Agung Cahyono Agung, Gede Panji Akhmad Fauzi Akrima Amalia Ario Damar Arshad, Mazlan Asronj Bakkit Simanjuntak Baskoro Rochaddi Booth, Hollie Charles Parningotan Haratua Simanjuntak Dwi Purwantoro Sasongko Fauzan, Fatih Ahmad Fenti Listiyani Fery Kurniawan Firda, Hasdinar Fredinan Yulianda Hades Mandela, Hades Hotlan Simbolon Indah, Mega Natasha Irham Nurwidyanto Irma Akhrianti Johan Maulana Hadi Kurniawati, Dwi Shinta Luky Adrianto M. Nurdin W. P. Majariana Krisanti Mardyani, Yeyen Mars Widodo Mennofatria Boer Mohammad Mukhlis Kamal Muhammad Yusuf Muhammad Zainuri Naufalzuhdi, Achyar purnama, Fajar adi Putra, Aditya Handoyo R. Sapto Hendri Boedi Soesatyo Rachmawani, Dori Rahmat Kurnia Rakhmat Syaefullah Riza Eka Prabowo Rohmah, Lailia Nur Rr. Tony Yulianto Sadelie, Agus Sahid Sahid Saiful Nurul Hudha sapanli, kastana Sidhi Saputra Siti Khasanah Siti Zulaikhah Sri Wahyuningrum Sugeng Widada Sugeng Widada Sugeng, Santoso Suparyana, Suparyana Suryono Suryono Taufiq Yuana Teguh Suroso Tridoyo Kusumastanto Udi Harmoko Udi Harmoko Vithya Arintalofa Wafi, Hanif Yonvitner - Yudha, Firsta Kusuma Yusuf D. H. Yusuf D.H Yusuf Dewantoro Herlambang Zaenal Arifin