Tectonics earthquake distribution pattern analysis based focal mechanisms (Case study Sulawesi Island, 1993–2012)

M., Muh. Fawzy Ismullah; Lantu,; Aswad, Sabrianto; Massinai, Muh. Altin

doi:10.1063/1.4915021

Cited by 3 publications

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“…Sulawesi and its surrounding areas have a tectonic order pattern that is composed of local geological structures. The geological structure is the Walanae Fault (South Sulawesi Arm), Lawanopo Fault (Sulawesi Southeast Arm), Matano Fault (Central Sulawesi), Palu-Koro Fault (Central Sulawesi), Batui Fault (Maluku Sea and Tomini Bay) and Double Subduction Maluku Sea (Sangihe Talaud Islands and Maluku Sea) (Ismullah et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Gravity anomaly to identify Walanae fault using second vertical derivative method

Justia¹,

Hiola²,

S³

2018

J. Phys.: Theor. Appl.

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<p class="Abstract">Research has been conducted to identify the Walanae Fault, coordinates 4–6 S and 118-120 E using anomalous gravity data. This research uses data measurement of Topography and the Free Air Anomaly from the TOPEX/Poseidon satellite. Then the authors processed to obtain the bouguer anomalies and made modeling by using the Surfer 10. The authors used the Second Vertical Derivative (SVD) with filter Elkins of Moving Average then analyze the graph of the SVD. The results shows the value of the residual anomaly in the north of fault is 25.21 mGal, in the middle occur range 17.67 mGal to 24.98 mGal and 30,376 mGal in the south of fault. The authors indicates the existence of a difference between the gravity between the Walanae Fault with surrounding geologic. From these results also show that Walanae Fault has a reverse fault mechanism in the northern part and the normal fault mechanism in the middle to the south, the authors conclude that the Walanae Fault is divided into two segments, that is the northern and the southern segment.</p>

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Section: Introductionmentioning

confidence: 99%

Gravity anomaly to identify Walanae fault using second vertical derivative method

Justia¹,

Hiola²,

S³

2018

J. Phys.: Theor. Appl.

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Mapping of earthquakes vulnerability area in Papua

Ismullah¹,

Massinai²

2016

AIP Conference Proceedings

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A new form of steel base isolation system for seismic high-rise building

Rochman

Rasidi

Sumardi

et al. 2020

IOP Conf. Ser.: Mater. Sci. Eng.

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The higher story of a building then it will be more vulnerable to its earthquake or seismic responses. The use of seismic devices will reduce earthquake force. In this study, the steel base isolation material has been proposed. This paper aims to design a new steel base isolation system that have good resistance in both of seismic vibration and axial pull out. The building data are 3D mini three-story, six-story, nine-story steel frame structures. The shaking table is used to test with two types of vibration, medium and maximum. FEM analysis was implemented to find the seismic responses. From the calculation results, a reduced response was obtained in conditions of moderate damage to a three-story frame with an average acceleration of 88% reduction, a maximum acceleration of 22% reduction and a six-story frame in heavy damage with an average acceleration of 73%, the maximum acceleration is reduced into 43%.

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Tectonics earthquake distribution pattern analysis based focal mechanisms (Case study Sulawesi Island, 1993–2012)

Cited by 3 publications

References 0 publications

Gravity anomaly to identify Walanae fault using second vertical derivative method

Gravity anomaly to identify Walanae fault using second vertical derivative method

Mapping of earthquakes vulnerability area in Papua

A new form of steel base isolation system for seismic high-rise building

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