检索结果-内蒙古大学图书馆

2nd International Seminar on Science and Technology 2020, ISST-2 2020

作者： Badaruddin Abdullah Priambudi, M.D. Rusli, M. Labania, H.M.D. Rugayya, S. Asrafil Geophysics Engineering Study Program Tadulako University Indonesia Physics Study Program Tadulako University Indonesia Geology Study Program Tadulako University Indonesia

The research was conducted in Kabonena village, which aims to see the subsurface structure and the liquefaction potential. The research was conducted using the geoelectric resistivity method with the Wenner system. The parameters used are geological data, hydrogeology and formation values to obtain between the resistivity value and the lithology of the study area. Furthermore, by considering the geological, hydrogeological conditions and formation factor values, the specific resistance values for each layer are interpreted. The results obtained show that the layers with specific resistance values of 39.16 - 97.9 Ωm are dominated by water-saturated sand/gravel. The resistivity value above 97.9 - 200 Ωm is the layer of molasses and alluvium deposits/coastal deposits, and the resistance value above 200 Ωm is the layer of crushed granite and granodiorite. The existence of a subsurface structure like this, so that in Kelurahan Kabonena it is called a liquefaction event. The location has a layer of saturated air that points to the east with a depth of less than 24 meters. © Published under licence by IOP Publishing Ltd.

关键词： Hydrogeology

来源：评论

学校读者我要写书评

暂无评论

A comprehensive analysis of wind power integrated with solar and hydrogen storage systems: Case study of Java's Southern coast

引用

International Journal of Hydrogen Energy 2024年 138卷 1279-1292页

作者： Hesty, Nurry Widya Fauziah, Khotimatul Aminuddin Zaky, Toha Fithri, Silvy Rahmah Aman, Mohamad Aziz, Amiral Rostyono, Didik Wijayanto, Rudi Purwo Ifanda Research Center for Energy Conversion and Conservation National Research and Innovation Agency KST BJ Habibie Serpong Tangerang Selatan15343 Indonesia Research Center for Process and Manufacturing Industry Technology National Research and Innovation Agency Building 625 KST BJ Habibie Serpong Banten Tangerang Selatan15314 Indonesia Magister of Industrial Engineering University of Mercu Buana Jakarta11650 Indonesia Study Program of Advanced Climatology Department of Geophysics and Meteorology IPB University Bogor16680 Indonesia Survey and Testing Center for Electricity New Renewable Energy and Energy Conservation Technology Ministry of Energy and Mineral Resources Jakarta12230 Indonesia

Wind and solar energy are vital to the global transition toward sustainable energy systems, driven by the need to reduce fossil fuel dependence, mitigate climate change, and enhance energy security. This study aims to optimize system performance by integrating hydrogen technology and addressing capacity shortages and excess energy. First, a comprehensive analysis of wind characteristics in a strategically important area to meet unaccomplished Indonesia's 2023 wind energy targets, focusing on Java's southern coast using wind speed data from the System Advisor Model (SAM), was conducted. Four scenarios are then evaluated: wind turbine (WT)-battery energy storage system (BESS), WT-photovoltaic (PV)-BESS, WT-fuel cell (FC)-electrolyzer (EL)-hydrogen tank (H2T), and WT-PV–FC–EL-H2T. Key metrics analyzed include excess energy, Levelized Cost of Electricity (LCOE), Net Present Cost (NPC), capacity shortage (CS), and electrolyzer full-load hours (EFH). Results show that average wind speeds reach 4.2 m/s in Pandeglang, with the WT–FC–EL-H2T system being the most reliable, exhibiting a 5% capacity shortage and 68.5% excess electricity. The WT-PV–FC–EL scenario is the most cost-effective, with a COE of $0.508/kWh and an NPC of $2.6 million. These findings provide valuable insights for improving sustainable energy infrastructure in the region. © 2024 Hydrogen Energy Publications LLC

关键词： Clean energy

来源：评论

学校读者我要写书评

暂无评论

Unlocking development of green hydrogen production through techno-economic assessment of wind energy by considering wind resource variability: A case study

引用

International Journal of Hydrogen Energy 2024年 138卷 1249-1262页

作者： Hesty, Nurry Widya Aminuddin Supriatna, Nina Konitat Cendrawati, Dian Galuh Nurliyanti, Vetri Nurrohim, Agus Fithri, Silvy Rahmah Niode, Nona Al Irsyad, Muhammad Indra Research Center for Energy Conversion and Conservation National Research and Innovation Agency KST Habibie Serpong Tangerang Selatan153432 Indonesia Research Center for Process and Manufacturing Industry Technology National Research and Innovation Agency KST Habibie Serpong Banten Tangerang Selatan153143 Indonesia Magister of Industrial Engineering University of Mercu Buana Jakarta11650 Indonesia Departement of Mechanical Engineering Universitas Indonesia 16424 Indonesia Survey and Testing Center for Electricity New Renewable Energy and Energy Conservation Technology Ministry of Energy and Mineral Resources Jakarta12230 Indonesia Study Program of Advanced Climatology Departement of Geophysics and Meteorologi IPB University Bogor16680 Indonesia Research Center for Behavioral and Circular Economics Jl. Gatot Subroto No.10 Jakarta12710 Indonesia

Generating hydrogen from renewable energy sources is widely recognized as an effective strategy for addressing critical challenges in the energy sector while contributing to the reduction of greenhouse gas emissions. This study aims to assess the wind energy potential for electricity and hydrogen production in five locations on Sumba Island using 10 years (2011–2020) of data from the NASA's POWER Project. A wind variability assessment was performed on five wind turbines ranging from 500 kW to 1.5 MW and using electrolysis technology. The results indicated a hydrogen production potential of 25–57 tons per year. Economic analysis of hydrogen production for Haharu reveals an attractive internal rate of return (IRR) of 43% with a payback period (PBP) of 2.25 years and a net present value (NPV) of 1.3 MM USD, the levelized cost of electricity (LCOE) of 0.0241 USD/kWh, and the levelized cost of Hydrogen (LCOH) of 1.01 USD/kg. Sensitivity analysis underscores the critical influence of investment and revenue on project profitability, highlighting their substantial impact on determining a project's success or failure. These findings emphasize the potential of Sumba Island as a hub for sustainable energy production to meet the growing demand for clean and renewable energy sources. © 2024 Hydrogen Energy Publications LLC

关键词： Clean energy

来源：评论

学校读者我要写书评

暂无评论

Hypocenter dimension of 7.5 mw Palu earthquake using fractal approach 2

Hypocenter dimension of 7.5 mw Palu earthquake using fractal...

引用

2nd International Conference of Interdisciplinary Research on Green Environmental Approach for Sustainable Development, ICROEST 2020

作者： Rasimeng, Syamsurijal Alimuddin Rustadi Sinambela, Rudy Z. Mandang, Idris Bakri, Samsul Zaenudin, Ahmad Department of Geophysical Engineering Faculty of Engineering University of Lampung Indonesia Disaster and Mitigation Center Faculty of Engineering University of Lampung Indonesia Study Program of Geophysics Faculty of Mathematics and Natural Science Mulawarman University Indonesia Department of Forestry Graduate Program of Environmental Sciences University of Lampung Indonesia

Research on the Palu earthquake in the period of August to October 2018 has been carried out in the Palu Koro Fault (PKF) zone with a hypocenter of 5-20 km. This study aims to determine the fractal dimensions of these earthquakes based on the relationship between logarithmic frequency and earthquake magnitude correlation introduced by Gutenberg-Richter. Statistical correlation between logarithmic frequency and earthquake magnitude was calculated using the inversion approach. Based on the calculation results obtained fractal dimension value of 1.0378, which describes the seismicity pattern at a depth of 5-20 km. It indicates that the earthquakes triggered by the movement in rupture segments which seen as points along the PKF zone. © Published under licence by IOP Publishing Ltd.

关键词： Earthquakes

来源：评论

学校读者我要写书评

暂无评论

Implications for fault locking south of Jakarta from an investigation of seismic activity along the Baribis fault, northwestern Java, Indonesia

引用

SCIENTIFIC REPORTS 2022年第1期12卷 1-10页

作者： Widiyantoro, S. Supendi, P. Ardianto, A. Baskara, A. W. Bacon, C. A. Damanik, R. Rawlinson, N. Gunawan, E. Sahara, D. P. Zulfakriza, Z. Husni, Y. M. Lesmana, A. Global Geophysics Research Group Faculty of Mining and Petroleum Engineering Institut Teknologi Bandung Bandung 40132 Indonesia Faculty of Engineering Maranatha Christian University Bandung 40164 Indonesia Agency for Meteorology Climatology and Geophysics (BMKG) Jakarta 10720 Indonesia Department of Earth Sciences Bullard Labs University of Cambridge Cambridge CB3 0EZ UK Geophysical Engineering Study Program Faculty of Mining and Petroleum Engineering Institut Teknologi Bandung Bandung 40132 Indonesia PT. Reasuransi Maipark Multivision Tower Menteng Atas Jakarta 12960 Indonesia

Recent borehole seismic deployments conducted along the Baribis Fault in northwestern Java reveal that it may be active. In this study, we exploit these data to locate proximal earthquakes using a relative relocation technique, estimate their moment magnitudes using a spectral fitting method and compute their focal mechanisms via waveform inversion. We observe that seismicity in the eastern part of the fault is significantly higher than in the west, where a previous GPS study of the region south of Jakarta demonstrated the existence of high compression rates. These observations imply that the western Baribis Fault is locked, and that neighbouring areas, including southern Jakarta and its surroundings, may be highly vulnerable to future sizeable earthquakes when accumulated elastic strain energy is eventually released during fault rupture. Significantly, the current generation of Indonesia's national hazard maps have not considered seismicity along the Baribis Fault. Our new results therefore call for an urgent reappraisal of the seismic hazard in northwestern Java that carefully takes into account the Baribis Fault and its earthquake potential, particularly in light of its proximity to Jakarta, a megacity that lies at the heart of one of the most densely populated islands in the world.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Analysis and evaluation of stability for the reactivated road landslide using electrical resistivity and induced polarization in Muara Badak district, East Kalimantan, Indonesia

引用

AIP Conference Proceedings 2024年第1期3095卷

作者： Wahidah Wahidah Piter Lepong Andi Alamsyah Djayus Djayus Supriyanto Supriyanto Qori Fajar Hermawan Amir Amir Geophysics Laboratory Faculty of Mathematics and Natural Sciences Mulawarman University Samarinda East Kalimantan Indonesia Civil Engineering Study Program Faculty of Engineering Universitas 17 Agustus 1945 Samarinda East Kalimantan Indonesia

Muara Badak is one of the districts that prone to the road landslide in Kutai Kertanegara Regency of East Kalimantan province in Indonesia. Reactivated landslides have been identified in several locations in the road access to Muara Badak district, for instance the Simpang-3 Sambera. Geophysical study has been carried out using Wenner Alpha of Electrical Resistivity Tomography (ERT) and Time Domain of Induced Polarization (IP) methods. Assessment and measurement conducted in three lines parallel to the road using MAE Unit-48 electrodes with three meters interval. Resistivity inversion shows the area predominantly composed of clay, sandy clay and coal, with resistivity value within 1-80 ohm.m, 81-200 ohm.m and >200 ohm.m respectively. Slip surface has been interpreted about 6 meter depth, occurring between the contacts of less-consolidated sandy clay and consolidated clay with translation pattern and thicker to the toe of the landslide. The IP data using to interpret the groundwater table at the depth of 3-4 meter based on the pattern of chargeability that closed to the surface. Furthermore and correlated to the Standard Penetration Test (SPT) data, the contact between the weak zone and the hard zone is interpreted to be at the depth of 6 meters. It is concluded that the trigger of the reactivated landslide in Simpang-3 Muara Badak were triggered by several factor including, rainfall and run of water, groundwater and steeply slope.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Identification of hydrothermal deposit mineralized zones using the induced polarization method in Kasihan Area, Pacitan, East Java 1

Identification of hydrothermal deposit mineralized zones usi...

引用

1st International Seminar on Science and Technology 2018, ISST 2018

作者： Asrafil Suyanto, I. Rugayya, S. Geological Engineering Study Program Tadulako University Indonesia Geophysics Study Program Universitas Gadjah Mada Indonesia Department of Physics Tadulako University Indonesia

The research area is one of the areas that have potential of hydrothermal deposit mineralization in Pacitan regency. This research aims to identify the presence of hydrothermal deposit mineralized zones through geophysical exploration by using induced polarization method in the study area. The induced polarization method is used to obtain anomalies in the form of contrast of resistivity and chargeability values in the study area. The results showed that the mineralized zones of hydrothermal deposit in the study area were characterized by significant anomaly contrast with the intensity of medium-high (> 100 Ωm) resistivity values associated with medium-value chargeability (20-50 ms). The association of resistivity and other chargeability values shows an intense alteration zone around the metal mineral deposits zone in the subsurface. © 2019 IOP Publishing Ltd. All rights reserved.

关键词： Deposits

来源：评论

学校读者我要写书评

暂无评论

Identification of potential liquefaction in Kabonena

引用

Journal of Physics: Conference Series 2021年第1期1763卷

作者： Badaruddin Abdullah M D Priambudi M Rusli H M D Labania S Rugayya Asrafil Geophysics Engineering Study Program Tadulako University Indonesia Physics Study Program Tadulako University Indonesia Geology Study Program Tadulako University Indonesia

关键词：

来源：评论

学校读者我要写书评

暂无评论

Adaptive irregular grid of seismic tomography: A synthetic test

引用

AIP Conference Proceedings 2024年第1期3019卷

作者： I. Putu Raditya Ambara Putra David P. Sahara Wahyu Hidayat Sri Widiyantoro Suharsono Geophysical Engineering Study Program Faculty of Technology Mineral UPN Veteran Yogyakarta Special Region of Yogyakarta Indonesia Global Geophysics Research Group Faculty of Mining and Petroleum Engineering Institut Teknologi Bandung Bandung West Java Indonesia Faculty of Engineering Maranatha Christian University Bandung West Java Indonesia

Seismic tomography is a method that is widely applied to obtain seismic velocity structures below the surface. This method is applied to various cases, from global to regional scales, as well as local scales such as in the case of volcanoes, geothermal areas and underground mining. Until now, the grid form that is still widely used is the regular grid form. With a very rigid grid shape, it will be more difficult and inflexible to model the geometry of certain geological models that are very varied, even though mathematically there is no reason to avoid certain grid shapes and sizes. In order to minimize the uncertainty of the subsurface geological model grid, we developed a script to perform seismic tomography where the shape and size of the grid can be made irregular based on the Voronoi diagram. The number of grids in the inversion process can also adaptively increase or decrease based on the number of the raypath data. We then applied it to the synthetic crosshole tomography data and compared the results with the regular grid. With the irregular shape and size of the grid, better inversion results are obtained and are more suitable with the synthetic model.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Reconstructing past landslide models based on subsurface resistivity profiles: Case study from Majene West Sulawesi 1

Reconstructing past landslide models based on subsurface res...

引用

1st International Conference on Geoscience, ICoGeS 2018

作者： Arsyad, Ardy Aswad, Sabrianto Syamsuddin, Erfan Department of Civil Engineering Faculty of Engineering Hasanuddin University Makassar Indonesia Study Program of Geophysics Faculty of Mathematics and Natural Science Hasanuddin University Makassar Indonesia

This paper presents a case study of reconstructing past landslide failure models in a napal geological formation by undertaking a series of geoelectrical tomographies and geotechnical bor-SPT surveys. study area is located in the National Artery Road 135 Kilometres, Majene-Mamuju, West Sulawesi. Geological formation found in the area is Napal Pambauang Formation. Massive ground movement is obviously detected in the area, and several landslide events have been occured in the last 10 years. In order to derive an effective technnique of mitigating the landslide in the area, past landslide failure models are needed to reconstruct. Therefore, 2D geoelectric tomographies survey combined several geotechnical bors were undertaken. A Framework of geophysics and geotechnical investigations was developed and implemented. The results show that slope failure models can be mapped, following unique patterns in the subsurface resistivity models. The finding slope failure models are well agreement with successive scarp patterns founded in the slope area. Past and recent landslides and future landslide are derived and this can be employed to design effective landslide mitigation strategies. © 2019 Published under licence by IOP Publishing Ltd.

关键词： Landslides

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：