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Calamity: A Journal of Disaster Technology and Engineering
Published by Institute for Advanced Science, Social, and Sustainable Future
ISSN : -     EISSN : 30254140     DOI : -
Core Subject : Science, Engineering,
Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering
Calamity: A Journal of Disaster Technology and Engineering focuses on unique research on all facets of natural hazards, such as the prediction of catastrophic events, risk management, and the nature of natural and manmade hazard precursors. The effects on the environment are equally disastrous even if risks might come from a variety of sources and systems, including atmospheric, hydrologic, oceanographic, volcanologic, seismic, and neotectonic. This calls for tight collaboration between many scientific and operational disciplines in order to improve risk reduction. Risk assessment is included in the coverage of hazards in the atmospheric, climatological, oceanographic, storm surge, tsunami, flood, snow, avalanche, landslide, erosion, volcanic, man-made, and technology categories.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 33 Documents
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Failure analysis of pulverizer pipe elbow in PLTU boiler Hendri Chandra; Rizki Zulkarnain; Muhammad Rafli Fazal
Calamity: A Journal of Disaster Technology and Engineering Vol. 1 No. 1 (2023): Calamity: A Journal of Disaster Technology and Engineering
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v1i1.2023.44

Abstract

Erosion occurs due to several different mechanisms, depending on the composition, size, shape of the eroding particles, speed, angle of impact, and surface composition of the eroded components. The pulverizer pipe elbow has become worn out due to the pulverized coal fluid abrasion flowing on the pipe, which the type is AISI Grade 1026. This study was carried out on the causes of this damage case. Damage to the elbow in the boiler needs to be analyzed for the failure of the elbow so that the damage's cause is known and it becomes a lesson so that the same damage does not occur again. The research aims to: 1. Find out the cause of damage to the pulverizer elbow on the boiler; 2. Know the correct maintenance strategy to increase the reliability of pulverizer pipes in boilers; 3. Simulate erosion due to coal particles in the pulverizer pipe using the Autodesk Simulation Computational Fluid Dynamics software program; 4. Analytical calculations of the erosion rate that occurs at the bend of the pulverizer pipe (elbow) in the boiler. The analysis was done by visual observation, hardness testing, metallographic observation, simulation of the ANSYS CFD program, and analytical calculation. The result of the ANSYS simulation showed that the main factor causing the leakage was erosion-corrosion. In the leaking area, the corrosion concentration was higher than in other areas, indicated by the red color in that area. From the calculation results, it was concluded that the largest erosion rate occurs at the angle of 200 with the value is 4.9548 x 10- 11 m3 / s, the smaller the pulverized coal’s angle of impact crashed the pulverizer pipe elbow, the greater the erosion.
Landslide disaster risk analysis in Pacet District, Mojokerto Regency, East Java Chusnaini Widiastutik; Devi Indah Permatasari; Afdilla Masniarahma; Aldy Firdiyansah; M Iqbal Nashrullah
Calamity: A Journal of Disaster Technology and Engineering Vol. 1 No. 1 (2023): Calamity: A Journal of Disaster Technology and Engineering
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v1i1.2023.113

Abstract

Pacet District, Mojokerto Regency, East Java is one of the areas prone to landslides. Landslides in the area that occur can threaten lives and cause environmental damage and financial losses. This study aims to analyze the risk of landslides in Pacet District, Mojokerto Regency, East Java, and apply Early Warning System (EWS) technology based on the Internet of Things (IoT). This type of research is both qualitative and quantitative, the results of the study are based on the level of threat of landslides. Designing a landslide early warning tool is not easy to do because it has to be adapted to local situations and conditions. This program will be directed at technology transfer by implementing an Internet of Things (IoT)-based Early Warning System (EWS).
Handling of area impact of land exploitation in the Kendeng Mountain, Pati District, Central Java Fathur Rozy; Mohamad Aliyudin; Sufi Mirna; Risa Ayu
Calamity: A Journal of Disaster Technology and Engineering Vol. 1 No. 1 (2023): Calamity: A Journal of Disaster Technology and Engineering
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v1i1.2023.132

Abstract

The Kendeng Mountains are the largest limestone producer on the island of Java, so mining or over-exploitation is often carried out in several locations. Pati Regency is a city affected by the exploitation of the Kendeng Mountains, in addition to Rembang Regency. The northern Kendeng area, which is in southern Pati, has experienced more than 60% deforestation. The impacts of this exploitation are floods, droughts, and landslides in the South Pati region. Since 2019 the southern Pati region has experienced quite large flash floods approximately 5 times. To deal with the impact of exploitation this research uses analysis and synthesis methods. The clearing of forest land use as an agricultural and mining area in this location continued to occur from 1996 to 2016, and the rainfall that experienced the La Nina phenomenon in 2020/2021 caused flooding in the Tambakromo, Kayen, Sukolilo, and Winong areas. and drought in 30 villages, in the Pati region, Central Java. To maintain the impact of exploitation, reforestation must be carried out, construction of drainage canals, and construction of springs
Burned area mapping in Dendang District, Tanjung Jabung Timur Regency using sentinel-2 Galih Citra Yogyanti
Calamity: A Journal of Disaster Technology and Engineering Vol. 1 No. 1 (2023): Calamity: A Journal of Disaster Technology and Engineering
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v1i1.2023.150

Abstract

Remote Sensing is a way to provide information efficiently both in terms of cost and time. In addition, the use of remote sensing in mapping the burned area can be carried out on a large scale but with a fast time for the prevention of land fires. Monitoring of forest fires is carried out to see locations that often become fire hotspots every year and to prevent frequent land and forest fires.The method used in this study is to map the burned area using multi-temporal data using the Normalized burning Ratio and Normalized burning Ratio 2 indices from Sentinel-2 images in May and September 2019. The trend data can be used to evaluate the moratorium on forest business permits or a peatland. Sentinel 2 has a higher spatial resolution of 20 meters compared to other multispectral images that can be accessed easily and free of charge, so it is suitable to be applied in areas that are not too large and minimizes the value of estimation errors, using Sentinel 2 imagery which has 13 channels will Selected several channels that can be used for index transformation, namely the NBR (Normalized Burn Ratio) and NBR2 (Normalized Burn Ratio2) indexes, both indices utilize Near Infrared, SWIR1, and SWIR2 channels which can provide information about the area after land fires,The research results obtained that burned areas are often identified as barren land, such as peat canals or vacant land. This is because the spectral reflection characteristics of objects in burnt areas are the same as those in non-vegetated land areas when the NBR index is transformed using the NIR, SWIR1 and SWIR2 channels. Keywords: Forest and land fires, NBR Indices, Sentinel-2.
Visualizing 2018 lombok earthquake in Indonesia using crowdsouring data: How people experience it Abghy Aunurrahim; Noorhadi Rahardjo
Calamity: A Journal of Disaster Technology and Engineering Vol. 1 No. 1 (2023): Calamity: A Journal of Disaster Technology and Engineering
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v1i1.2023.159

Abstract

Along with the development of science and technology, using big data, map makers can take advantage of crowdsourcing social media data on Twitter to obtain user location when uploading tweets, which can be called geolocated tweets. Earthquakes that occur very often in Indonesia often grab people's attention, especially netizens who use social media like Twitter. One of the major earthquakes that occurred in Indonesia in 2018 was the Lombok earthquake, which occurred twice in a row from July to August 2018. Using Twitter data, information and social responses related to the 2018 Lombok earthquake can be obtained, which can be used as evaluation material for public handling and responding. The information is then visualized in various forms, and one of the best visualization methods is selected.This study uses Twint package in Python as a way of obtaining location data from Twitter. The method used to collect Twitter data is a case study on the social impact of the Lombok earthquake in Indonesia in 2018. The data observation method used is a simulation of several types of map visualization and survey methods in selecting the best type of visualization. The method of analysis used is by mapping the data on the number of tweets as the main object using various types of maps, as well as calculating survey results by scoring each group of questions.The results of spatial data extraction from Twitter in this study obtained 2032 tweets that had been selected and cleaned from 11,584 tweets. Map visualization with the theme of the social impact of the Lombok earthquake in 2018 was compiled using five types of visualization, namely choropleth maps, proportional symbol maps, dot maps, hexagonal tessellation maps, and heat maps. Based on the results of the survey on selecting the best visualization, it was found that the choropleth map is the best visualization method according to respondents with a cartography background and respondents who are unfamiliar with cartography because the information displayed is easier to read and understand.
A review of disaster mitigation analysis in learning Tranggono, Mochamad Irvan; Sulindra, Gusti
Calamity: A Journal of Disaster Technology and Engineering Vol. 1 No. 2: January (2024)
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v1i2.2024.232

Abstract

Education has a role in building character and community disaster response through learning in schools. Learning that is integrated with disaster mitigation is one of the efforts to develop the soul (character) to have disaster preparedness. This is important to reduce the impact of the disaster. This study aims to present information related to disaster mitigation techniques on the lessons that have been carried out. through a literature review of 7 articles on the Google Scholar database with limitations for 2019-2023. The article search method begins with Harzing's publish or perish software. The results of the research based on the 7 articles that have been reviewed show that the integration of disaster preparedness learning towards disaster preparedness with various levels of education integrated into learning materials using a structured learning model and updates according to the year the journal was published.
Potential forest fire during the long dry season Province Riau & Jambi Hawam, Mochamad Emil; Aulady, Mohamad Ferdaus Noor
Calamity: A Journal of Disaster Technology and Engineering Vol. 2 No. 1: (July) 2024
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v2i1.2024.241

Abstract

Background: Air pollution is a very serious problem nowadays. Air pollution can be caused by the problem of haze from forest fires that occurred in 2015 & 2019 in Province Riau & Jambi. The worst conditions occurred in the period 1997-1998 and in 2006-2007. In 2015 & 2019 the haze conditions returned to the 1997 period. Province Riau & Jambi contributed to the largest hotspots in forest fires compared to North Sumatra or Kalimantan. The increase in the haze that has continued for the past three months is very worrying because the haze is getting worse and thicker, making the visibility of the affected areas even smaller. The purpose of this research to know the capabilities being run the Riau provincial government has been in control of who impressed off guard because repeated continuously, and whether factors constr ai nts and defienc e i nflu enci ng th e c apab i li ti es of th e Province Riau & Jambi government. Method: Descriptive research is research that aims to describe, describe and analyze existing events and aims to obtain information about the impact of the haze in Province Riau & Jambi with existing theories so that it can be used in mitigation in different places. Findings: The urgency in this study to see why the Province Riau & Jambi government off guard so persistent, because the capabilities of the system and the process will involve considering the fire that occurred not once or twice only. Conclusion: The main causes of forest and peatland fires in Riau are human activities, such as the use of fire for land clearing and agricultural practices, combined with natural conditions like dry land and extreme hot weather. These fires significantly impact human health, social interactions, and the environment, necessitating critical awareness among farmers to act responsibly and monitor fire spread to prevent future losses. Novelty/Originality of this article: By analyzing the inhibiting factors and definitions that influence local government capacity, this study opens new insights into the complexity of environmental disaster management involving interactions between human activities, natural conditions, and institutional capacity.
Analysis of human resources readiness in facing natural disasters study case: Lapindo Sidoarjo mud disaster Hussain, Adnan; Deviansari, Naza; Alamsyah , Rizal; Disrey, Inggrid; Ansori, Moch Fadil; Dhani , Ramdhani Amrullah
Calamity: A Journal of Disaster Technology and Engineering Vol. 1 No. 2: January (2024)
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v1i2.2024.271

Abstract

The Lapindo Mud Disaster is a phenomenon that occurs due to the overflow of mudflows emit from the malfunction of exploration by company, named PT. Minarak Lapindo Jaya, that occurred in Sidoarjo, East Java, Indonesia. So far, the efforts of the government and Lapindo have shown no success in stopping the flow or managing the social and environmental impacts of the overflowing mud. Until now, no less than 60.000 residents in the Tanggulangin, Porong, and Jabon sub- districts have been uprooted from the roots of their homeland. Sidoarjo, which is located between Surabaya and Gempol, is the main of East Java’s Transportation, which has an impact on economic losses in the macro and micro sectors. This study uses a descriptive research strategy, conduct by questioner to the refuges and analyze with Multiple Linear Regression Analysis. To determined which factors are significantly affect their livelihoods. But this is not necessarily felt by all residents, there are also those who are greatly disadvantaged because the main livelihood activities in the village/residence environment are disrupted.
Analysis of the risk of landslids in Kebomas, Gresik district Setiawan, Romy; Aji, Priatmojo; Arifin, Syahdan; Irmansyah, Rizal; Kinyua, James Gitonga
Calamity: A Journal of Disaster Technology and Engineering Vol. 1 No. 2: January (2024)
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v1i2.2024.278

Abstract

Landslides occurred during the rainy season in Kebomas District, Gresik Regency, which has topography in the form of hills left over from limestone mining in 1960-1990. Field surveys conducted from December 2021 to March 2022 stated that landslides occurred during the rainy season in Kebomas District and caused damage to surrounding settlements. Slope, rainfall, rock type, soil type, and land use are factors that influence the occurrence of landslides. The purpose of this study was to map the level of landslide vulnerability in Kebomas District using a Geographic Information System. The methodologies used in this study include the application of GIS for geospatial data analysis, assessment of landslide hazard potential through secondary data and field surveys, and vulnerability analysis of physical data. Additionally, a qualitative analysis of landslide disaster risk was conducted, combining hazard and vulnerability factors. These methods aim to identify and prioritize landslide-prone areas in Gresik Regency for better disaster risk management. The results showed that there were three levels of landslide vulnerability in Kebomas District, namely low, medium and high. The low vulnerability class is found in all villages in the Kebomas District, most of which are in the six villages or sub-districts in the south, west and north, namely; Dahanrejo, Kedanyang, Prambang, Kembangan, Randuagung, and Segoromadu. The moderate vulnerability class is found in all villages in the Kebomas District, most of which are in the six villages in the southeast, northwest and north, namely; Randuagung, Prambang, Dahanrejo, Kembangan, Sidomoro, and Ngargosari. Areas with a high vulnerability class are located in the central part of the sub-district which includes 15 villages or sub-districts, most of which are in four villages, namely; Klangonan, Kawisanyar, Randuagung, and Sidomoro. This study shows that mapping the level of landslide vulnerability in the Kebomas District can help plan and manage disaster risks more effectively, especially in areas with high vulnerability. The results of this study provide a basis for creating more targeted landslide mitigation and handling strategies, as well as the need for special attention in areas with moderate to high vulnerability.
Green open space plan for coal mine reclamation area PT Angsana Jaya Energi, Angsana, Tanah Bumbu, South Kalimantan Febrianti, Aulia Nur; Mardiyanto, Agus; Susiloningtyas, Arianik; Made, Dewa; Darmastuti, Dwi Reping; Sugih, Yuvita
Calamity: A Journal of Disaster Technology and Engineering Vol. 1 No. 2: January (2024)
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v1i2.2024.312

Abstract

Mining activities can have a significant negative impact on the environment, leading to degradation. Converting land into a mining area requires mandatory post-mining reclamation activities. PT Angsana Jaya Energi, one of the coal mining companies in South Kalimantan, especially in Tanah Bumbu Regency, is participating in the implementation of reclamation activities. These activities will develop urban forests on mining land sold, covering an area of 29.75 hectares based on field surveys and data synthesis. To prepare a zoning plan for an urban forest area, several analyses are necessary, including spatial requirements, activities, user characteristics, forest organization, and regional footprint. The development of an urban forest will serve different functions in each area.

Page 1 of 4 | Total Record : 33

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