Preprints
https://doi.org/10.5194/nhess-2019-215
https://doi.org/10.5194/nhess-2019-215
23 Aug 2019
 | 23 Aug 2019
Status: this discussion paper is a preprint. It has been under review for the journal Natural Hazards and Earth System Sciences (NHESS). The manuscript was not accepted for further review after discussion.

Correlation between the fractal of aftershock spatial distribution and active fault on Sumatra

Bahary Setyawan and Benyamin Sapiie

Abstract. This study discusses the correlation between the fractal of spatial epicentre distribution of aftershock (D2) and active fault (D0) in the Sumatra region. We identified 15 earthquakes in this region that were followed by aftershock cluster and related to the Sumatra Fault Zone or Southern Andaman West Fault. The spatial epicentre distribution of the aftershock was estimated by using two-point correlation integral and the D2 values found were varying from 1.03 ± 0.03 to 1.68 ± 0.08. We estimated the fractal dimension of the active fault by using Box–Counting Method and found that the variation of D0 values in the range of 0.95 ± 0.03 to 1.16 ± 0.01. Positive correlation was found in this study and two patterns were identified that had similar slope with different intercept. However, there was also a correlation that had steeper slope. The steeper slope was related to earthquake doublet mechanism that could generate more random spatial distribution of the aftershock in the fault system.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Bahary Setyawan and Benyamin Sapiie
 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Bahary Setyawan and Benyamin Sapiie
Bahary Setyawan and Benyamin Sapiie

Viewed

Total article views: 824 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
533 252 39 824 133 55 42
  • HTML: 533
  • PDF: 252
  • XML: 39
  • Total: 824
  • Supplement: 133
  • BibTeX: 55
  • EndNote: 42
Views and downloads (calculated since 23 Aug 2019)
Cumulative views and downloads (calculated since 23 Aug 2019)

Viewed (geographical distribution)

Total article views: 709 (including HTML, PDF, and XML) Thereof 708 with geography defined and 1 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Latest update: 18 May 2024
Download
Short summary
This study more discusses the fractal of aftershock characteristics in spatial distribution and fault dimension. The recent study didn't consider that the earthquake mechanism could affect the aftershock distribution. To conclude, we found scale invariance in the relationship between fault and aftershock spatial distribution. It also was controlled by the mechanism of earthquakes, either it was a regular or doublet earthquake.
Altmetrics