. 2020 May 6;10:7636. doi: 10.1038/s41598-020-64560-w

Table 4.

Comparison between the locations of earthquake epicentres according to from our method and other sources.

	Bam Earthquake	Sichuan-Gansu border earthquake	Elazig earthquake	Banepa earthquake
USGS	$φ = 28^{°} 5 9' 4 2 ″$ $λ = 58^{°} 1 8' 39 . 6 ″$	$φ = 32^{°} 4 5' 21 . 6 ″$ $λ = 105^{°} 2 9' 38 . 4 ″$	$φ = 38^{°} 5 1' 50.0 4 ″$ $λ = 39^{°} 5 9' 9 . 6 ″$	$φ = 27^{°} 3 7' 40 . 8 ″$ $λ = 85^{°} 3 2' 2 4 ″$
ISC-GEM	$φ = 28^{°} 5 1' 0 0 ″$ $λ = 58^{°} 1 5' 0 0 ″$	$φ = 32^{°} 4 4' 0 6 ″$ $λ = 105^{°} 3 0' 50 . 4 ″$	$φ = 38^{°} 4 7' 2 4 ″$ $λ = 40^{°} 0 1' 4 8 ″$	$φ = 27^{°} 4 0' 23.8 8 ″$ $λ = 85^{°} 4 1' 16.0 8 ″$
IIEES	$φ = 29^{°} 0 0' 3 6 ″$ $λ = 58^{°} 1 5' 3 6 ″$	$φ = 32^{°} 4 8' 0 0 ″$ $λ = 105^{°} 2 8' 4 8 ″$	$φ = 38^{°} 5 2' 1 2 ″$ $λ = 39^{°} 5 9' 2 4 ″$	$φ = 27^{°} 3 6' 3 6 ″$ $λ = 85^{°} 5 0' 0 6 ″$
Our approach	φ = 29°–29.5° λ = 58.5°–59°	φ = 32.5°–33° λ = 105.5°–106°	φ = 38.5°–39° λ = 39.5°–40°	φ = 27.5°–28° λ = 85°–85.5°

Bam Earthquake

Sichuan-Gansu border earthquake

Elazig earthquake

Banepa earthquake

USGS

$φ = 28^{°} 5 9' 4 2 ″$

$λ = 58^{°} 1 8' 39 . 6 ″$

$φ = 32^{°} 4 5' 21 . 6 ″$

$λ = 105^{°} 2 9' 38 . 4 ″$

$φ = 38^{°} 5 1' 50.0 4 ″$

$λ = 39^{°} 5 9' 9 . 6 ″$

$φ = 27^{°} 3 7' 40 . 8 ″$

$λ = 85^{°} 3 2' 2 4 ″$

ISC-GEM

$φ = 28^{°} 5 1' 0 0 ″$

$λ = 58^{°} 1 5' 0 0 ″$

$φ = 32^{°} 4 4' 0 6 ″$

$λ = 105^{°} 3 0' 50 . 4 ″$

$φ = 38^{°} 4 7' 2 4 ″$

$λ = 40^{°} 0 1' 4 8 ″$

$φ = 27^{°} 4 0' 23.8 8 ″$

$λ = 85^{°} 4 1' 16.0 8 ″$

IIEES

$φ = 29^{°} 0 0' 3 6 ″$

$λ = 58^{°} 1 5' 3 6 ″$

$φ = 32^{°} 4 8' 0 0 ″$

$λ = 105^{°} 2 8' 4 8 ″$

$φ = 38^{°} 5 2' 1 2 ″$

$λ = 39^{°} 5 9' 2 4 ″$

$φ = 27^{°} 3 6' 3 6 ″$

$λ = 85^{°} 5 0' 0 6 ″$

Our approach

φ = 29°–29.5°

λ = 58.5°–59°

φ = 32.5°–33°

λ = 105.5°–106°

φ = 38.5°–39°

λ = 39.5°–40°

φ = 27.5°–28°

λ = 85°–85.5°