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Official Journal of the Asia Oceania Geosciences Society (AOGS)

Table 2 The fault parameters for the segment of the Sumatran Fault in the vicinity of the Pasaman earthquake (summarized by Irsyam et al. 2020)

From: The 2022 Mw6.2 Pasaman, Indonesia, earthquake sequence and its implication of seismic hazard in central-west Sumatra

ID

Segment

Last earthquakes

Time elapse (until 2022)

Expected magnitude

Slip rate (mm/yr)

Recurrence interval (year)

Max ∆CFS (bars)

Short-term rate change

Rupture probability in 50 years

1

Angkola

1892

130

7.7

14

291

0.01

3.4%

16.5%

2

Barumun

No record

N/A

7.5

14

192

−0.01

−3.3%

NA

3

Sumpur

No record

N/A

6.9

14

55

0.10

39.6%

NA

4

Sianok

1926

96

7.4

14

156

0.10

39.6%

41.2%

5

Sumani

1943

79

7.1

14

84

0.03

10.5%

72.0%

  1. The records for historical earthquakes were obtained by Sieh and Natawidjaja (2000). The probability of rupture in the next 50 years for each segment is evaluated using the Poisson process and the BPT model for segments where at least one earthquake was recorded