scholarly journals Determination of tsunami run-up and golden time in the megathrust subduction zone of the sunda strait segment

2021 ◽  
Vol 331 ◽  
pp. 07007
Author(s):  
Iko Sarikanti Ponangsera ◽  
Anwar Kurniadi ◽  
Deffi Ayu Puspitosari ◽  
Dedy Hartono
Keyword(s):  
Subduction Zone ◽  
Seismic Activity ◽  
Warning System ◽  
Primary Data ◽  
Tsunami Warning System ◽  
Loss Of Life ◽  
Disaster Data ◽  
Run Up ◽  
Tsunami Run Up

The Indonesian Disaster Data and Information Management Database state that the tsunami in the Megathrust Subduction Zone of the Sunda Strait Segment is a disaster threat with high impact and loss of life every time it occurs. Therefore, determining the run-up and golden time of the tsunami in the Megathrust Subduction Zone of the Sunda Strait Segment is necessary as part of the mitigation of seismic activity that has the potential for a tsunami. The design of this study is qualitative research with primary data to determine the run-up and golden time of the tsunami in the Megathrust Subduction Zone of the Sunda Strait Segment obtained from the Indonesia Tsunami Warning System (InaTEWS) at BMKG. The results of the study inform that seismic activity in the Megathrust Subduction Zone of the Sunda Strait Segment can cause a tsunami with a run-up of 5.99 meters and a golden time of 40 minutes 19 seconds in Banten and South Lampung, the run-up of 3.83 meters, and a golden time of 1 hour 1 minute 10 seconds in Pacitan, East Java, run up 3.28 meters and golden time 33 minutes 15 seconds in Pangandaran, West Java.

scholarly journals Estimasi Ancaman Gempabumi dan Tsunami di Kabupaten Pidie Jaya Aceh untuk Mendukung Keamanan Nasional

2021 ◽  
Vol 6 (1) ◽  
pp. 1-7
Author(s):  
Rio Khoirudin Apriyadi ◽  
Wahyu Kurniawan ◽  
Sugeng Yulianto ◽  
Syamsunasir Syamsunasir ◽  
I Dewa Ketut Kerta Widana ◽  
...  
Keyword(s):  
National Security ◽  
Warning System ◽  
Tsunami Warning ◽  
Tsunami Warning System ◽  
Run Up

[Estimation of The Threat of Earthquake and Tsunami in Pidie Jaya Regency to Support National Security]. Bencana merupakan suatu ancaman non-militer dan nyata yang dihadapi dunia saat ini. Bencana mengancam keselamatan masyarakat yang pada akhirnya mengancam keamanan nasional suatu negara, termasuk Indonesia. Ancaman nyata yang saat ini dirasakan oleh masyarakat Indonesia adalah peningkatan kejadian bencana yang dirasakan hampir diseluruh wilayah Indonesia. Kabupaten Pidie Jaya yang merupakan bagian dari Provinsi Aceh juga memiliki ancaman multi bencana seperti gempabumi dan tsunami. Gempabumi yang terjadi di Pidie Jaya disebabkan oleh aktivitas Sesar Pidie dengan arah bidang patahan mendatar atau strike-slipe. Selain itu, terdapat Zona Megathrust Sumatera dan Sesar Besar Sumatera yang berada di Provinsi Aceh dengan aktivitas kegempaan yang dapat berpotensi tsunami. Dalam penelitian ini dilakukan suatu simulasi tsunami dengan output wilayah-wilayah yang berpotensi tsunami berserta run up atau ketinggian air tsunami akibat gempa di Zona Megathrust Aceh-Andaman. Penelitian ini menggunakan metode kualitatif (deskriptif analisis) sebagai desain penelitian. Penelitian dilakukan pada 18 Maret 2021 di ruang operasional InaTEWS (Indonesia Tsunami Warning System) Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) menggunakan bantuan software TOAST (Tsunami Observation and Simulation Terminal).  Dari seluruh rangkaian pengolahan dan analisis data didapatkan hasil bahwa Zona Megathrust Aceh-Andaman berpotensi tsunami dengan run up (ketinggian air tsunami) yang paling tertinggi sebesar 10,5 meter di Meulaboh, Kab. Aceh Barat, 5,5 meter di Kota Sabang, dan 3 meter di Kabupaten Pidie Jaya dengan waktu tiba tsunami (golden time) sekitar 24 menit 55 detik. Kajian atas estimasi gempabumi dan tsunami ini dapat dijadikan sebagai sumber informasi dalam penentuan kebijakan BPBD Pidie Jaya dalam upaya mitigasi bencana untuk melindungi masyarakat Pidie Jaya dan mewujudkan keamanan nasional.

The Case of the Disappearing Lighthouse

Tsunami ◽  
2021 ◽  
pp. 5-16
Author(s):  
James Goff ◽  
Walter Dudley
Keyword(s):  
Atomic Bomb ◽  
Hawaiian Islands ◽  
Warning System ◽  
Coast Guard ◽  
Tsunami Warning ◽  
Tsunami Warning System ◽  
Loss Of Life ◽  
English Speaking ◽  
English Speaking World ◽  
The Waves

This chapter follows the course of the waves caused by the 1946 Aleutian earthquake, which ultimately resulted in the creation of the first official tsunami warning system, from their source in Alaska as they demolished a Coast Guard lighthouse, caused massive destruction and loss of life in Hawaii, and ultimately reached the shores of Antarctica. The chapter presents observations by mariners at sea off Alaska, Navy pilots flying over Hawaii, and a marine geologist in the Hawaiian Islands for the Bikini atomic bomb tests and firsthand accounts of amazing survival and tragic loss in Hawaii. In addition to the devastating tsunami, 1946 marked the year when scientists in Japan and the English-speaking world finally adopted the name “tsunami” for these events.

Determination of mangrove forest performance in reducing tsunami run-up using physical models

2012 ◽  
Vol 63 (2) ◽  
pp. 939-963 ◽  
Author(s):  
H. Ismail ◽  
A. K. Abd Wahab ◽  
N. E. Alias
Keyword(s):  
Mangrove Forest ◽  
Physical Models ◽  
Run Up ◽  
Tsunami Run Up

PERANAN INSPEKTORAT KABUPATENSUMENEP DALAM MENCEGAH DAN MENDETEKSI FRAUD DI DINAS PENDIDIKAN SUMENEP

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Astri Furqani ◽  
Hafidhah .
Keyword(s):  
Local Government ◽  
Qualitative Study ◽  
Asset Management ◽  
Sampling Technique ◽  
Research Data ◽  
Qualitative Approach ◽  
Primary Data ◽  
The Government

In this era, a lot of activities that can not be separated from the practice of cheating or fraud , no exception In the government . Inspektorat Sumenep is the leading institution of internal Local Government in preventing and detecting fraud in the Local Government appropiate Perbup Sumenep No. 29 of 2008 . Dinas Pendidikan Sumenep need attention on the issue . This is due to Dinas Pendidikan Sumenep an agency with the largest number of assets and managing large budgets . These conditions led to the formulation of the problem is How Inspektorat Sumenep role in preventing and detecting fraud in Dinas Pendidikan Sumenep. This study used a qualitative approach in which the focus of this study is Inspektorat role in preventing and detecting fraud at Dinas Pendidikan Sumenep . Primary data obtained by direct interviews with the parties directly related to the determination of the source of research data in a qualitative study using nonprobability sampling . The sampling technique used was purposive sampling . The conclusion of this study, role of the Inspektorat Sumenep in the prevention of fraud in Dinas Pendidikan Sumenep still not maximal . This is due to Inspektorat Sumenep not supervise from the planning / budgeting and not optimal in overseeing and assisting the implementation of the SPIP as an instrument of fraud prevention in Dinas Pendidikan Sumenep . The role of Inspektorat Sumenep in the detection of fraud in Dinas Pendidikan Sumenep done by conducting an audit of financial and asset management in each financial year.Keywords: fraud, government, inspektorat.

PROFITABILITY ANALYSIS OF TERUBUK FARMING (SACCHARUM EDULE HASSKARL) IN SUBDISTRICT TOSA DISTRICT OF EAST TIDORE OF TIDORE ISLAND

2018 ◽  
Author(s):  
Suwandi S. Sangadji
Keyword(s):  
Data Collection ◽  
Research Method ◽  
Quantitative Method ◽  
Secondary Data ◽  
Primary Data ◽  
Profitability Analysis ◽  
Sample Method ◽  
Document Review ◽  
Revenue Production

The purpose of this researchment is to ascertain how wide the farming of species Saccharun Edule Hasskarl (terubuk) in sub district Tosa, district of East Tidore of Tidore Island through the indicator of the value revenue, production and selling prices so that the farmers will achieve The Break Event Point (BEP). The research method was used a quantitative method with the number of samples of 30 people. The determination of the sample method is using the census method or involving all members of the population into a sample of researchment. The secondary data collection was done by using library literature in the form of document review and relevant references to research object while primary data collection was done by using questionnaire. The data is using equation R /C Ratio, BEP Revenue, BEP Price, and BEP Production. Therefore from the results of the researchment it can be explained that the two of the thirty farmers come through the break event point, while the other twenty-eight farmers declared having a business that worth to be develop or experiencing profit, because the R/C ratio is above 1.0 with average profit reach Rp. 989.000, - per production / farmer.

scholarly journals Potential deployment of offshore bottom pressure gauges and adoption of data assimilation for tsunami warning system in the western Mediterranean Sea

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Mohammad Heidarzadeh ◽  
Yuchen Wang ◽  
Kenji Satake ◽  
Iyan E. Mulia
Keyword(s):  
Data Assimilation ◽  
Warning System ◽  
Western Mediterranean ◽  
Tsunami Warning ◽  
Sensitivity Analyses ◽  
Bottom Pressure ◽  
Tsunami Warning System ◽  
Earthquake Scenarios ◽  
The North ◽  
Western Mediterranean Basin

AbstractWestern Mediterranean Basin (WMB) is among tsunamigenic zones with numerous historical records of tsunami damage and deaths. Most recently, a moderate tsunami on 21 May 2003 offshore Algeria, North Africa, was a fresh call for strengthening tsunami warning capabilities in this enclosed water basin. Here, we propose to deploy offshore bottom pressure gauges (OBPGs) and to adopt the framework of a tsunami data assimilation (TDA) approach for providing timely tsunami forecasts. We demonstrate the potential enhancement of the tsunami warning system through the case study of the 2003 Algeria tsunami. Four scenarios of OBPG arrangements involving 10, 5, 3 and 2 gauges are considered. The offshore gauges are located at distances of 120–300 km from the North African coast. The warning lead times are 20, 30, 48 and 55 min for four points of interest considered in this study: Ibiza, Palma, Sant Antoni and Barcelona, respectively. The forecast accuracies are in the range of 69–85% for the four OBPG scenarios revealing acceptable accuracies for tsunami warnings. We conclude that installation of OBPGs in the WMB can be helpful for providing successful and timely tsunami forecasts. We note that the OBPG scenarios proposed in this study are applicable only for the case of the 2003 Algeria tsunami. Further studies including sensitivity analyses (e.g., number of OBPG stations; earthquake magnitude, strike, epicenter) are required in order to determine OBPG arrangements that could be useful for various earthquake scenarios in the WMB.

scholarly journals Tsunami risk management for crustal earthquakes and non-seismic sources in Italy

2021 ◽  
Author(s):  
J. Selva ◽  
A. Amato ◽  
A. Armigliato ◽  
R. Basili ◽  
F. Bernardi ◽  
...  
Keyword(s):  
Warning System ◽  
Physical Modelling ◽  
Tsunami Hazard ◽  
Tsunami Warning ◽  
Current Status ◽  
Seismic Sources ◽  
Warning Systems ◽  
Tsunami Warning System ◽  
Crustal Earthquakes ◽  
The Mediterranean

AbstractDestructive tsunamis are most often generated by large earthquakes occurring at subduction interfaces, but also other “atypical” sources—defined as crustal earthquakes and non-seismic sources altogether—may cause significant tsunami threats. Tsunamis may indeed be generated by different sources, such as earthquakes, submarine or coastal landslides, volcano-related phenomena, and atmospheric perturbations. The consideration of atypical sources is important worldwide, but it is especially prominent in complex tectonic settings such as the Mediterranean, the Caribbean, or the Indonesian archipelago. The recent disasters in Indonesia in 2018, caused by the Palu-Sulawesi magnitude Mw 7.5 crustal earthquake and by the collapse of the Anak-Krakatau volcano, recall the importance of such sources. Dealing with atypical sources represents a scientific, technical, and computational challenge, which depends on the capability of quantifying and managing uncertainty efficiently and of reducing it with accurate physical modelling. Here, we first introduce the general framework in which tsunami threats are treated, and then we review the current status and the expected future development of tsunami hazard quantifications and of the tsunami warning systems in Italy, with a specific focus on the treatment of atypical sources. In Italy, where the memory of historical atypical events like the 1908 Messina earthquake or the relatively recent 2002 Stromboli tsunami is still vivid, specific attention has been indeed dedicated to the progressive development of innovative strategies to deal with such atypical sources. More specifically, we review the (national) hazard analyses and their application for coastal planning, as well as the two operating tsunami warning systems: the national warning system for seismically generated tsunamis (SiAM), whose upstream component—the CAT-INGV—is also a Tsunami Service Provider of the North-eastern Atlantic, the Mediterranean and connected seas Tsunami Warning System (NEAMTWS) coordinated by the Intergovernmental Coordination Group established by the Intergovernmental Oceanographic Commission (IOC) of UNESCO, and the local warning system for tsunamis generated by volcanic slides along the Sciara del Fuoco of Stromboli volcano. Finally, we review the state of knowledge about other potential tsunami sources that may generate significant tsunamis for the Italian coasts, but that are not presently considered in existing tsunami warning systems. This may be considered the first step towards their inclusion in the national tsunami hazard and warning programs.

scholarly journals Shoreline Changes along Northern Ibaraki Coast after the Great East Japan Earthquake of 2011

2021 ◽  
Vol 13 (7) ◽  
pp. 1399
Author(s):  
Quang Nguyen Hao ◽  
Satoshi Takewaka
Keyword(s):  
Near Infrared ◽  
Thermal Emission ◽  
Sandy Beaches ◽  
Great East Japan Earthquake ◽  
Shoreline Changes ◽  
Run Up ◽  
Tsunami Run Up ◽  
Sentinel 2 ◽  
Infrared Radiometer

In this study, we analyze the influence of the Great East Japan Earthquake, which occurred on 11 March 2011, on the shoreline of the northern Ibaraki Coast. After the earthquake, the area experienced subsidence of approximately 0.4 m. Shoreline changes at eight sandy beaches along the coast are estimated using various satellite images, including the ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer), ALOS AVNIR-2 (Advanced Land Observing Satellite, Advanced Visible and Near-infrared Radiometer type 2), and Sentinel-2 (a multispectral sensor). Before the earthquake (for the period March 2001–January 2011), even though fluctuations in the shoreline position were observed, shorelines were quite stable, with the averaged change rates in the range of ±1.5 m/year. The shoreline suddenly retreated due to the earthquake by 20–40 m. Generally, the amount of retreat shows a strong correlation with the amount of land subsidence caused by the earthquake, and a moderate correlation with tsunami run-up height. The ground started to uplift gradually after the sudden subsidence, and shoreline positions advanced accordingly. The recovery speed of the beaches varied from +2.6 m/year to +6.6 m/year, depending on the beach conditions.

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