Satellite Application for Felt Earthquake Events in Sabah, Malaysia

Sali, Aduwati; Zainal, D; Ahmad, Noordin; Omar, M F

doi:10.18178/ijesd.2017.8.2.938

Cited by 3 publications

(4 citation statements)

References 3 publications

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“…Aside from above, previously, on July 26, 1976, a severe earthquake centered in Lahad Datu, Sabah, with a moment magnitude of Mw 5.8 struck east Malaysia [46]. In addition, recently an earthquake that happened in Ranau, Sabah on 5th June 2015 with a moment magnitude of Mw 6.0 has shocked the Southeast Asian public because it was unexpected.…”

Section: Seismicitymentioning

confidence: 91%

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A Framework of Systematic Land Use Vulnerability Modeling Based on Seismic Microzonation: A Case Study of Miri District of Sarawak, Malaysia

Najar¹,

Ahmadi²,

Khalik³

et al. 2022

IJDNE

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The objective of this research is to develop the framework for sustainable land-use planning on the basis of seismic microzonation to reduce the devastating effects of future earthquakes by utilizing the software geographical information system (ArcGIS). Miri district of Sarawak in Malaysia has been chosen as the study area because of having the highest peak ground acceleration which is 0.09g in terms of the 10% probability of exceedance in 50 years. In addition, the frequency of an earthquake with a magnitude up to 5.3 is approximately every 5-7 years. Therefore, it is vital to introduce land use planning in order to diminish the adverse effects of earthquakes in the future. For this purpose, Google Earth Pro was used for the collection of satellite image data for land use planning purposes. From the results, it was found that the seismic hazard in the Miri district varies from low to high corresponding to 2475 years of return period with low to moderate as predominant over the Miri district. Only a few areas are under high hazard. Also, the land use planning map was compared with the current land use map acquired from satellite imagery and it was found that all built-up is in the low hazard area. It is envisaged that the findings from this research will contribute immensely to the literature that will serve as background information and a guide for analysts, disaster management, engineering designers and seismologists in Malaysia and the world as a whole.

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Section: Seismicitymentioning

confidence: 91%

“…A significant number of specialists were also taken aback by the damage it caused. This occurrence of earthquake is regarded as Malaysia's largest recorded earthquake, and 18 people were killed as a result of it [46,47].…”

Section: Seismicitymentioning

confidence: 99%

A Framework of Systematic Land Use Vulnerability Modeling Based on Seismic Microzonation: A Case Study of Miri District of Sarawak, Malaysia

Najar¹,

Ahmadi²,

Khalik³

et al. 2022

IJDNE

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“…W j = I j p ij (8) where P ij (1) is the frequency ratio; a and b are the domain (percentage of the total area covered by each class) and past seismic activities' percentages respectively; (P ij ) (4) is the probability density; H j (5) and H jmax (6) represent entropy values with j = 1, . .…”

Section: Implementation Of Index Of Entropy (Ioe)mentioning

confidence: 99%

“…Evidence data from the Minerals and Geoscience Department (JMG) reported that Ranau has strong topographic relief and even moderate magnitude earthquakes would generate large-scale mass movements of land; landslides and mud-floods [8]. These issues created urgent needs for the general population especially for the people living in the affected zone and required immediate solutions towards disaster recovery and preparedness; prompting research-based outputs [4].…”

Section: Introductionmentioning

confidence: 99%

Seismic Vulnerability Assessment in Ranau, Sabah, Using Two Different Models

Razak¹,

Rambat²,

Ros³

et al. 2021

IJGI

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Sabah is prone to seismic activities due to its location, being geographically located near the boundaries of three major active tectonic plates; the Eurasian, India-Australia, and Philippine-Pacific plates. The 6.0 Mw earthquake that occurred in Ranau, Sabah, on 15 June 2015 which caused 18 casualties, all of them climbers of Mount Kinabalu, raised many issues, primarily the requirements for seismic vulnerability assessment for this region. This study employed frequency ratio (FR)–index of entropy (IoE) and a combination of (FR-IoE) with an analytical hierarchy process (AHP) to map seismic vulnerability for Ranau, Sabah. The results showed that the success rate and prediction rate for the areas under the relative operating characteristic (ROC) curves were 0.853; 0.856 for the FR-IoE model and 0.863; 0.906 for (FR-IoE) AHP, respectively, with the highest performance achieved using the (FR-IoE) AHP model. The vulnerability maps produced were classified into five classes; very low, low, moderate, high, and very high seismic vulnerability. Seismic activities density ratio analysis performed on the final seismic vulnerability maps showed that high seismic activity density ratios were observed for high vulnerability zones with the values of 9.119 and 8.687 for FR-IoE and (FR-IoE) AHP models, respectively.

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