EDUKASI BENCANA KEKERINGAN DAN KESIAPSIAGAAN WARGA MASYARAKAT DALAM MENANGGULANGI BENCANA KEKERINGAN DI KABUPATEN LOMBOK TENGAH PROVINSI NUSA TENGGARA BARAT

2021 ◽  
pp. 28-44
Author(s):  
Ida Surya Surya ◽  
I Gusti Ngurah Suwetha
Keyword(s):  
Qualitative Research ◽  
Eurasian Plate ◽  
Cropping Patterns ◽  
Field School ◽  
Australian Plate ◽  
The Pacific ◽  
Weather And Climate ◽  
Disaster Education ◽  
Field Schools ◽  
Planting Season

Geologically, Indonesia is located at the confluence of three of the world's main plates, namely the Indo-Australian Plate, the Eurasian Plate, and the Pacific Plate, which often cause disasters, for example drought. Central Lombok Regency is one of the regencies in West Nusa Tenggara, with these two seasons, most often hit by drought disasters, considering that the rainfall in Central Lombok is very small. So that disaster education and preparedness are needed for residents. This article uses qualitative research methods. The results of the study show that climate field schools have an important role in disaster education. Climate field school is a form of education for farmers that is very useful especially in understanding the weather and climate combined with new agricultural techniques that will allow farmers to plant different crops at different times of the year. Meanwhile, for preparedness, it is carried out through several programs in the form of urging and asking farmers to be disciplined in carrying out cropping patterns according to the zoning in which they are located (rice-padi-palawija or padi-palawija-palawija), mapping of land related to cropping patterns, planting rice parity that requires little water, namely the Situpagendit variety, and urges farmers to insure their rice plants, which is Rp. 36.000/ Ha for one planting season at PT. JASINDI.   Keywords: Indonesia's geological location, disaster, disaster education.

EDUKASI DAN MITIGASI GEMPA PADA BANGUNAN

2021 ◽  
pp. 417
Author(s):  
Daniel Christianto ◽  
Sunarjo Leman ◽  
Alvira Nathania Tanika ◽  
Maria Kevinia Sutanto ◽  
Vryscilia Marcella
Keyword(s):  
General Information ◽  
Physical Contact ◽  
Eurasian Plate ◽  
Earthquake Mitigation ◽  
Natural Event ◽  
Australian Plate ◽  
The Pacific ◽  
Prone Area ◽  
Tectonic Earthquakes ◽  
The Impact

A natural disaster is a natural event that has a major impact on the human population. One of the natural events that became the focus of this PKM activity was an earthquake. Earthquakes are natural events in the form of vibrations or wavy movements on the earth's crust caused by internal forces. Earthquakes caused by shifting of the ground are called tectonic earthquakes and earthquakes caused by volcanoes are called volcanic earthquakes. Indonesia is an earthquake-prone area because it is located on three plates, namely the Eurasian Plate, the Pacific Plate, and the Indo-Australian Plate. Only in western, central and southern Kalimantan, the source of the earthquake was not found. To reduce the impact of risk during an earthquake, it is necessary to carry out an earthquake mitigation to the community in areas prone to earthquakes. Earthquake mitigation that will be carried out in this PKM activity is in the form of counseling through online webinars to prevent physical contact or crowds, related to the Covid19 pandemic. As a result, from the questions asked by participants, there is still a lack of understanding of the dangers of changing the function of the building or the building's use limit based on the design load and the condition of the building after the earthquake. So for the next PKM, it is recommended to make general information guidelines such as examples of photos or pictures about the condition of buildings that need to be reviewed for repairs or are no longer suitable for use after being hit by an earthquake.Bencana alam adalah suatu peristiwa alam yang mengakibatkan dampak besar bagi populasi manusia. Salah satu peristiwa alam yang menjadi fokus dalam kegiatan PKM ini adalah gempa bumi. Gempa bumi merupakan fenomena alam berupa getaran atau gerakan bergelombang pada lempeng bumi yang disebabkan oleh tenaga yang berasaldari dalam bumi. Gempa yang disebabkan oleh pergeseran tanah dinamakan gempa tektonik dan gempa yang disebabkan oleh gunung berapi dinamakan gempa vulkanik. Indonesia merupakan daerah rawan gempa karena terletak di atas tiga lempeng yakni Lempeng Eurasia, Lempeng Pasifik, dan Lempeng Indo-Australia. Hanya di Kalimantan bagian barat, tengah, dan selatan, sumber gempa bumi tidak ditemukan. Untuk mengurangi dampak resiko pada saat gempa perlu dilakukan suatu mitigasi gempa kepada masyarakat di daerah yang rawan terjadi gempa bumi. Mitigasi gempa yang akan dilakukan dalam kegiatan PKM ini berupa penyuluhan melalui webinar secara online untuk mencegah kontak fisik atau kerumunan, berhubungan dengan pandemi Covid19. Hasilnya, dari pertanyaan yang diajukan peserta, masih kurang pemahaman bahaya dari mengubah fungsi guna bangunan atau batas guna bangunan berdasarkan beban desain dan kondisi bangunan setelah gempa. Maka untuk PKM selanjutnya, disarankan membuat panduan informasi secara umum seperti contoh foto atau gambar tentang kondisi bangunan yang perlu ditinjau untuk perbaikan atau tidak layak guna lagi setelah terkena gempa.

scholarly journals PENGELOMPOKAN KEJADIAN GEMPA BUMI MENGGUNAKAN FUZZY C-MEANS CLUSTERING

2019 ◽  
Vol 4 (2) ◽  
pp. 103-110
Author(s):  
Ryan Rifqi Arista ◽  
Rosa Andrie Asmara ◽  
Dwi Puspitasari
Keyword(s):  
Eurasian Plate ◽  
Tectonic Plates ◽  
Fuzzy C Means ◽  
Australian Plate ◽  
The Pacific ◽  
Earthquake Vulnerability ◽  
Fuzzy C Means Clustering ◽  
Grouping Systems ◽  
Two Parameters ◽  
High Level

The Indonesian region has a high level of earthquake vulnerability when compared to other countries. This is because Indonesia's position is at the confluence of three large tectonic plates namely the Eurasian plate, the Indo-Australian plate, and the Pacific plate. The high level of earthquake susceptibility is evidenced by significant earthquake data from 2005 to 2009, which recorded 26 significant earthquakes over a period of 4.8 to 8.6 on the Richter scale. The earthquake also caused impacts including casualties, injuries, damage to houses and destruction of houses.The earthquake event grouping system is a system that functions to classify earthquake events based on two main parameters, namely earthquake strength parameters and earthquake impact parameters. The two parameters are grouped separately, so that the grouping process produces two kinds of grouping results. The stages of this system start from preprocessing data to eliminate noise, then take grouping parameters from the user in the form of the number of clusters, minimum error values, and the maximum iteration limit. Grouping is done using fuzzy c-means method. The grouping results are then displayed in table form and in the form of coordinates in Google Maps.The grouping of earthquake events has been tested by comparing the results of grouping systems with the results of manual grouping. Testing is done by inputting a number of different maximum iterations. Based on the test results it was found that the greater the maximum iteration value will affect the accuracy of grouping.

Information System for Determining Earthquake and Tsunami Evacuation Paths in Bengkulu City Based on Android

2019 ◽  
Vol 16 (12) ◽  
pp. 5180-5185
Author(s):  
Yulia Darmi ◽  
Busono Soerowirdjo ◽  
Ery Prasetyo Wibowo ◽  
Ernastuti
Keyword(s):  
Information System ◽  
Disaster Preparedness ◽  
Eurasian Plate ◽  
Tectonic Plates ◽  
Tsunami Disaster ◽  
Indonesian Archipelago ◽  
Australian Plate ◽  
The Pacific ◽  
Evacuation Route ◽  
The City

Facility of directions to the evacuation places in the city of Bengkulu is very minimal, so that people are very difficult to find an efficient route to the evacuation places. The problem is how to determine the evacuation route/gathering point. Indonesia is prone to earthquakes because logically, the Indonesian archipelago is at the confluence of three tectonic plates: the Eurasian plate, the Australian plate and the Pacific plate. In the event of an earthquake and tsunami disaster, if disaster preparedness is not prepared, it will cause damage to buildings, offices and can result in fatalities such as the events in Nangro Aceh Darussalam. Therefore, we need a system that can help overcome this disaster management. The system that can be made is the Information System for Determining Earthquake and Tsunami Evacuation Paths in the city of Bengkulu Using Android. By using Android, it will be easier for people to imitate an evacuation route or place during an earthquake and tsunami.

scholarly journals Perilaku Gedung Dengan Perbedaan Kekakuan Antar Lantai

2019 ◽  
Vol 8 (1) ◽  
pp. 1-9
Author(s):  
Tommy Iduwin ◽  
Dicki Dian Purnama
Keyword(s):  
Eurasian Plate ◽  
Soft Storey ◽  
Soft Story ◽  
Building Models ◽  
Australian Plate ◽  
Richter Scale ◽  
Response Dynamic ◽  
The Pacific ◽  
High Level ◽  
Spectrum Response

Abstract Earthquake is one of the most frequent disasters in Indonesia. This is due to the location of Indonesia which is located between 3 active plates, namely the Pacific Plate, the Indo-Australian Plate and the Eurasian Plate. While from 2018 to date the biggest and worst earthquake in the Lombok Earthquake that occurred with magnitude reached 7 on the Richter Scale and hammer earthquakes with magnitude 7.4 on the Richter Scale. One of the frequent failures caused by the earthquake is the soft store. Soft story mainly occurs in office buildings, hotels or apartments which generally have a lobby or area that is intentionally made without walls / dividers, either on the ground floor or the upper floors so that inter-floor fuss will be different. In designing and modeling structures, buildings are generally designed with open frame type port without walls. The height of the column can also cause a difference between different floors. This study will compare between the wallless portal model with a higher level at the bottom of the building, the middle of the building and the top of the building, where a high level with smaller stiffness has the potential to be soft (soft story). In this study using ETABS 9.7.2 program with spectrum response dynamic load based on the 2017 earthquake map. Results The structure period of the results of the analysis with the program in the crack cross section condition was obtained at 2.01 seconds. The shape mode for the three PPKBB, PKBT and PKBA building types has met the requirements where in shape 1 and 2 building models are translating towards the x or y axis while in shape 3 mode they are twisted. The required mass participation ratio value is reached at the 90% percentage reached at the 8th shape mode for the PKBB and PKBT buildings. While for PKBA it is reached in the 5th shape mode. Deviation values ​​for the three types of building PKBB, PKBT and PKBA are still within the permit limit. Keywords: earthquake, soft storey, spectrum response

scholarly journals Pemakaian Bracing Pada Bangunan Tahan Gempa dengan Analisis Pushover (The Usage of Bracing on Earthquake Resistant Buildings with Pushover Analysis)

2016 ◽  
Vol 1 (01) ◽  
pp. 84
Author(s):  
Dwi Wahyu Anggraeni ◽  
Erno Widayanto ◽  
Dwi Nurtanto
Keyword(s):  
Collision Energy ◽  
Pushover Analysis ◽  
Pacific Plate ◽  
Earthquake Response ◽  
Eurasian Plate ◽  
High Rise ◽  
Australian Plate ◽  
The Pacific ◽  
Earthquake Resistant ◽  
The Difference

AbstractMost of Indonesia area is an earthquake- prone region. This is caused by the confluence of three major plates world that are subduction. Indo-Australian Plate colliding with the Eurasian plate off the coast of Sumatra, Java and Nusa Tenggara, while the Pacific plate in northern Guinea and North Maluku. In the vicinity of the meeting location this plate collision energy accumulated in the form of earthquake. The quake destroyed much of the multi-storey buildings that do not have adequate strength. Therefore , the higher the building, the greater the effects of the earthquake were received by the building. One way to acquire resistance to earthquake response was to add rigidity to a building. How to obtain the stiffness of a building is to install bracing for high-rise buildings. The purpose of this analysis was conducted to determine usage behavior particularly bracing displacement. The Results of this analysis showed a reduction in horizontal deviation of the building due to the addition of frame bracing. The difference in the percentage of horizontal deviation without bresing building and building using bresing X is 82.519%. While the difference in the percentage of horizontal deviation without order bresing building and building using bresing V is 64.904%.Keywords: pushover analysis , bracing, displacement,earthquake AbstrakSebagian besar wilayah Indonesia merupakan wilayah rawan gempa. Hal ini disebabkan oleh pertemuan tiga lempeng utama dunia yang bersifat subdaksi. Lempeng Indo- Australia bertabrakan dengan lempeng Eurasia di lepas pantai Sumatra, Jawa dan Nusa Tenggara, sedangkan lempeng Pasific di utara Irian dan Maluku Utara. Di sekitar lokasi pertemuan lempeng ini akumulasi energi tabrakan terkumpul sehingga lepas berupa gempa bumi. Gempa banyak menghancurkan bangunan- bangunan bertingkat yang tidak mempunyai kekuatan yang memadai. Oleh karena itu, semakin tinggi bangunan maka semakin besar pula efek gempa yang diterima oleh bangunan tersebut. Salah satu cara untuk memperoleh ketahanan terhadap respon gempa adalah menambah kekakuan pada suatu bangunan. Cara memperoleh kekakuan suatu bangunan adalah dengan memasang pengekang (bracing) untuk bangunan tinggi. Tujuan dari analisa ini dilakukan untuk mengetahui perilaku pemakaian bracing khususnya displacement. Hasil dari analisa ini menunjukkan terjadinya pengurangan simpangan horizontal gedung karena adanya penambahan rangka bracing. Selisih presentase simpangan horizontal gedung tanpa bresing dan gedung dengan menggunakan bresing X adalah 82,519%. Sedangkan selisih presentase simpangan horizontal gedung tanpa rangka bresing dan gedung dengan menggunakan bresing V adalah 64,904%.Kata kunci: analisa pushover , bracing, displacement, gempa

scholarly journals Studi Literatur Penggunaan Sensor untuk Sistem Deteksi Gempa

2021 ◽  
Vol 1 ◽  
pp. 1-7
Author(s):  
Rizki Kurniawati ◽  
Muhammad Ary Murti
Keyword(s):  
Warning Systems ◽  
Eurasian Plate ◽  
Literature Study ◽  
Detection Systems ◽  
Earthquake Detection ◽  
Australian Plate ◽  
The Pacific ◽  
Prone Area ◽  
Earthquake Vibration ◽  
Selection Of

As a country located among three major tectonic plate confluences, namely the Eurasian Plate, the Indo-Australian Plate, and the Pacific Plate, Indonesia is an earthquake-prone area. Information about the earthquake occurrences is distributed by the BMKG through social media, websites and television. However, it is undeniable that there are still people who do not have televisions or smartphones. Therefore, earthquake warning systems began to be widely developed. Furthermore, sensors for earthquake vibration detection have an important role in earthquake warning systems. So in this article, the author has conducted a literature study and analysis of the sensors commonly used in earthquake detection systems. This study aimed to present sensor recommendations to be used as earthquake sensors. The result of the literature study, that the author had done, is the selection of sensors is customized to the needs and budget of the project. A description of the sensor recommendations for each project has also been included in this article.

scholarly journals ANALISIS PERGESERAN LEMPENG BUMI YANG MENINGKATKAN POTENSI TERJADINYA GEMPA BUMI DI PULAU LOMBOK

2020 ◽  
Vol 4 (2) ◽  
pp. 139-146
Author(s):  
Yanita Syafitri ◽  
Bahtiar Bahtiar ◽  
Lalu A. Didik
Keyword(s):  
Qualitative Research ◽  
Active Tectonics ◽  
Qualitative Approach ◽  
Eurasian Plate ◽  
Tectonic Plates ◽  
Australian Plate ◽  
Active Tectonic ◽  
The World ◽  
Lombok Island

This research is a qualitative research. Where the purpose of this research is to find out how the shifts of the earth’s plates around Lombok Island can increase the frequency of potential earthquakes on Lombok Island. This study uses a qualitative approach by paying attention to the theory of earth’s plates and the movements of the earh’s plates that have been described previously. The results of this study indicate a link between earth plate shifts and the frequency of earthquakes on Lombok Island. The world’s active tectonic plates in which the movements of two of them (the Indo-Australian Plate and the Eurasian Plate) greatly affect the frequency of earthquakes due to passing through Lombok Island. In addition to the two active tectonics plates  of the world, there is also one Fault namely the Flores Up Fault which stretches from Flores to Lombok Island which forms a trough amd is very active.

scholarly journals TINGKAT KESIAPSIAGAAN KEPALA KELUARGA DALAM MENGHADAPI BENCANA GEMPA BUMI DI KECAMATAN PLERET DAN PIYUNGAN KABUPATEN BANTULTINGKAT KESIAPSIAGAAN KEPALA KELUARGA DALAM MENGHADAPI BENCANA GEMPA BUMI DI KECAMATAN PLERET DAN PIYUNGAN KABUPATEN BANTUL

2020 ◽  
Vol 13 (1) ◽  
pp. 84-92
Author(s):  
Niken ◽  
Andri Setyorini
Keyword(s):  
Disaster Preparedness ◽  
Eurasian Plate ◽  
The Public ◽  
Australian Plate ◽  
The Pacific ◽  
The Family ◽  
Male Head ◽  
Property Losses ◽  
The Government ◽  
Quantitative Descriptive

  Indonesia is one of the countries in the world that is vulnerable to various natural disasters. Indonesia is located at the confluence of three main plates of the earth, the Eurasian Plate, the Indo-Australian Plate and the Pacific Plate. One of the disasters that occurred in Indonesia was an earthquake, Yogyakarta is an area prone to experiencing earthquakes more precisely in Bantul district. In 2006 the earthquake in Yogyakarta claimed more than 6500 lives and property losses. The main factor in the emergence of many victims due to disasters is due to lack of knowledge about the disaster and lack of preparedness in anticipating the disaster. The purpose of this study was to measure the preparedness of the head of the family for earthquake disasters in the Piyungan and Pleret sub-districts of Bantul Regency. This type of research is in the form of quantitative descriptive by describing data that has been collected without intending to make conclusions that do not apply to the public. The number of samples is 192 head of family. Sampling of research using acidental sampling for the selection of male head of family respondents. The instruments used were LIPI and UNESCO in 2006. The results of research on the level of disaster preparedness in the majority Piyungan sub-district in the ready category (65-79) were 94 respondents (97.9%), while the Pleret sub-district included in the ready category (65-79) 90 respondents (93.8%). Suggestions from this research are to improve disaster preparedness by conducting training and simulations from the government, BPBD or involving health education institutions.

Dynamics of the extension in the Fonualei Rift in the northern Lau Basin at 16 °S

2021 ◽  
Author(s):  
Anna Jegen ◽  
Anke Dannowski ◽  
Heidrun Kopp ◽  
Udo Barckhausen ◽  
Ingo Heyde ◽  
...  
Keyword(s):  
Velocity Gradient ◽  
Lower Crust ◽  
Pacific Plate ◽  
P Wave ◽  
Upper Crust ◽  
Lau Basin ◽  
Australian Plate ◽  
The Pacific ◽  
Refraction Seismic ◽  
Roll Back

<p>The Lau Basin is a young back-arc basin steadily forming at the Indo-Australian-Pacific plate boundary, where the Pacific plate is subducting underneath the Australian plate along the Tonga-Kermadec island arc. Roughly 25 Ma ago, roll-back of the Kermadec-Tonga subduction zone commenced, which lead to break up of the overriding plate and thus the formation of the western Lau Ridge and the eastern Tonga Ridge separated by the emerging Lau Basin.</p><p>As an analogue to the asymmetric roll back of the Pacific plate, the divergence rates decline southwards hence dictating an asymmetric, V-shaped basin opening. Further, the decentralisation of the extensional motion over 11 distinct spreading centres and zones of active rifting has led to the formation of a composite crust formed of a microplate mosaic. A simplified three plate model of the Lau Basin comprises the Tonga plate, the Australian plate and the Niuafo'ou microplate. The northeastern boundary of the Niuafo'ou microplate is given by two overlapping spreading centres (OLSC), the southern tip of the eastern axis of the Mangatolu Triple Junction (MTJ-S) and the northern tip of the Fonualei Rift spreading centre (FRSC) on the eastern side. Slow to ultraslow divergence rates were identified along the FRSC (8-32 mm/a) and slow divergence at the MTJ (27-32 mm/a), both decreasing southwards. However, the manner of divergence has not yet been identified. Additional regional geophysical data are necessary to overcome this gap of knowledge.</p><p>Research vessel RV Sonne (cruise SO267) set out to conduct seismic refraction and wide-angle reflection data along a 185 km long transect crossing the Lau Basin at ~16 °S from the Tonga arc in the east, the overlapping spreading centres, FRSC1 and MTJ-S2, and extending as far as a volcanic ridge in the west. The refraction seismic profile consisted of 30 ocean bottom seismometers. Additionally, 2D MCS reflection seismic data as well as magnetic and gravimetric data were acquired.</p><p>The results of our P-wave traveltime tomography show a crust that varies between 4.5-6 km in thickness. Underneath the OLSC the upper crust is 2-2.5 km thick and the lower crust 2-2.5 km thick. The velocity gradients of the upper and lower crust differ significantly from tomographic models of magmatically dominated oceanic ridges. Compared to such magmatically dominated ridges, our final P-wave velocity model displays a decreased velocity gradient in the upper crust and an increased velocity gradient in the lower crust more comparable to tectonically dominated rifts with a sparse magmatic budget.</p><p>The dominance of crustal stretching in the regional rifting process leads to a tectonical stretching, thus thinning of the crust under the OLSC and therefore increasing the lower crust’s velocity gradient. Due to the limited magmatic budget of the area, neither the magnetic anomaly nor the gravity data indicate a magmatically dominated spreading centre. We conclude that extension in the Lau Basin at the OLSC at 16 °S is dominated by extensional processes with little magmatism, which is supported by the distribution of seismic events concentrated at the northern tip of the FRSC.</p>

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