River Morphology

Kuiper, Edward

doi:10.1007/978-1-4899-6281-2_4

Cited by 1 publication

(1 citation statement)

References 20 publications

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“…It is the Sadang River valley area, and the CBA results can be found in the supplementary data. A river valley is characterized by at least two parameters, namely, the low lying areas of land between hills or mountains and alluvial sediments deposited along the watershed [20]. These two parameters cause the gravity anomaly to be low.…”

Section: Gravity Resultsmentioning

confidence: 99%

Characterization of the Mamasa Earthquake Source Based on Hypocenter Relocation and Gravity Derivative Data Analysis

Rosid¹

2022

GEOMATE

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Mamasa, located in West Sulawesi, Indonesia, is a populous dense area with a low seismic hazard. In this area, the question of fault reactivation was raised due to the 804 reported earthquakes from November 2018 to February 2019. This series does not show an apparently major earthquake or behaviors, such as swarms. One month earlier, on 28 September 2018, the 7.6 Mw Palu earthquake occurred at a distance of approximately 230 km north of Mamasa. It affected the occurrence of this swarm since Mamasa has many hydrothermal manifestations, which have been linked with seismic activity. To investigate the roles of these two factors, the series of earthquakes and their possible linked faults must be characterized. Specifically, the double-difference hypocenter relocation method was used to relocate the earthquakes and conduct a spatiotemporal analysis of this swarm. Furthermore, the FHD (first horizontal derivative) gravity data were used to illuminate the possible linked fault. To assess the impact of the Palu earthquake, the Coulomb stress was calculated, and it was reported that it was very small. Therefore, it played an insignificant role in triggering the swarm. In contrast, the relocated earthquakes are concentrated in an area surrounded by surface hydrothermal manifestations, and the swarm feature is consistent with the interpretation of associated seismicity. Therefore, hydrothermal activities play a critical role in triggering the swarm.

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Section: Gravity Resultsmentioning

confidence: 99%

Characterization of the Mamasa Earthquake Source Based on Hypocenter Relocation and Gravity Derivative Data Analysis

Rosid¹

2022

GEOMATE

View full text Add to dashboard Cite

show abstract

River Morphology

Cited by 1 publication

References 20 publications

Characterization of the Mamasa Earthquake Source Based on Hypocenter Relocation and Gravity Derivative Data Analysis

Characterization of the Mamasa Earthquake Source Based on Hypocenter Relocation and Gravity Derivative Data Analysis

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