Major magnitude 7.2 earthquake - 36 km west of North Island, Bougainville, Papua New Guinea, on Friday, April 28, 1972 at 23:32 GMT

Major magnitude 7.2 earthquake - 36 km west of North Island, Bougainville, Papua New Guinea, on Friday, April 28, 1972 at 23:32 GMT Major magnitude 7.2 earthquake - 36 km west of North Island, Bougainville, Papua New Guinea, on Friday, April 28, 1972 at 23:32 GMT

Major magnitude 7.2 earthquake at 410 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.

Earthquake details

Date & timeApr 28, 1972 23:32:11 UTC
Local time at epicenter
StatusConfirmed
Magnitude7.2
Depth409.9 km
Epicenter latitude / longitude5.154°S / 154.191°E (Solomon Sea, Papua New Guinea)
Antipode5.154°N / 25.809°W
Shaking intensityLight shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoEmperor Range (104 km / 65 mi)
Nearby towns and cities193 km (120 mi) NW of Panguna (pop: 2,920) | Show on map | Quakes nearby
194 km (120 mi) NW of Arawa (pop: 40,300) | Show on map | Quakes nearby
231 km (144 mi) ESE of Kokopo (pop: 26,300) | Show on map | Quakes nearby
243 km (151 mi) NW of Buin (pop: 750) | Show on map | Quakes nearby
249 km (154 mi) ESE of Rabaul (pop: 8,070) | Show on map | Quakes nearby
440 km (273 mi) NW of Gizo (New Georgia Group, Solomon Islands) (pop: 6,150) | Show on map | Quakes nearby
474 km (294 mi) SE of Kavieng (pop: 14,500) | Show on map | Quakes nearby
913 km (568 mi) ENE of Port Moresby (pop: 283,700) | Show on map | Quakes nearby
Estimated seismic energy released4 x 1015 joules (1106 gigawatt hours, equivalent to 9.5 x 105 tons of TNT or 59.5 atomic bombs!) | about seismic energy
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
Mag.DepthLocationSource
7.2410 kmBougainville region, Papua New GuineaUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake.
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Aftershocks

[More info]

Recorded aftershocks, latest first (111 quakes)

Date and timeMag
Depth
LocationDetails
Apr 28, 1974 18:01
48 years ago
5.2

112 km
38 km W of Tanwoa Island, Bougainville, Papua New GuineaMore
Apr 27, 1974 16:12
48 years ago
4.4

24 km
203 km S of Kokopo, East New Britain Province, Papua New GuineaMore
Apr 15, 1974 14:23
48 years ago
4.4

111 km
Tanwoa Island, 133 km NW of Arawa, Bougainville, Papua New GuineaMore
Apr 4, 1974 23:31
48 years ago
5.2

54 km
46 km S of Torokina Islet Island, Bougainville, Papua New GuineaMore
Apr 4, 1974 19:30
48 years ago
4.5

56 km
81 km SW of Arawa, Bougainville, Papua New GuineaMore
Apr 2, 1974 09:49
48 years ago
4.4

105 km
24 km SW of Tanwoa Island, Bougainville, Papua New GuineaMore
Apr 2, 1974 04:02
48 years ago
5.7

47 km
85 km S of Arawa, Bougainville, Papua New GuineaMore
Mar 30, 1974 21:57
48 years ago
5.0

4 km
34 km S of Torokina Islet Island, Bougainville, Papua New GuineaMore
Mar 25, 1974 11:44
48 years ago
5.1

58 km
71 km SW of Arawa, Bougainville, Papua New GuineaMore
Mar 24, 1974 19:51
48 years ago
4.8

41 km
226 km SE of Kokopo, East New Britain Province, Papua New GuineaMore
Mar 21, 1974 16:40
48 years ago
4.9

75 km
Lamassa Island, 61 km SE of Kokopo, East New Britain Province, Papua New GuineaMore
Mar 13, 1974 21:19
48 years ago
5.6

20 km
74 km SW of Torokina Islet Island, Bougainville, Papua New GuineaMore
Mar 12, 1974 07:38
48 years ago
5.1

56 km
40 km SW of Torokina Islet Island, Bougainville, Papua New GuineaMore
Mar 3, 1974 13:56
48 years ago
4.8

46 km
207 km SE of Kokopo, East New Britain Province, Papua New GuineaMore
Feb 28, 1974 02:11
48 years ago
5.2

101 km
21 km E of Govu Islet Island, Bougainville, Papua New GuineaMore
Feb 28, 1974 00:07
48 years ago
4.6

46 km
116 km SW of Arawa, Bougainville, Papua New GuineaMore
Feb 27, 1974 22:46
48 years ago
5.1

48 km
27 km SW of Torokina Islet Island, Bougainville, Papua New GuineaMore
Feb 27, 1974 17:49
48 years ago
5.0

49 km
108 km SW of Arawa, Bougainville, Papua New GuineaMore
Feb 25, 1974 13:29
48 years ago
4.7

33 km
109 km S of Kokopo, East New Britain Province, Papua New GuineaMore
Feb 24, 1974 22:08
48 years ago
4.8

36 km
231 km S of Kokopo, East New Britain Province, Papua New GuineaMore
Feb 23, 1974 03:21
49 years ago
4.7

42 km
Lamassa Island, 67 km SE of Kokopo, East New Britain Province, Papua New GuineaMore
Feb 20, 1974 09:42
49 years ago
5.0

42 km
206 km W of Arawa, Bougainville, Papua New GuineaMore
Feb 10, 1974 02:25
49 years ago
5.0

33 km
110 km SW of Arawa, Bougainville, Papua New GuineaMore
Feb 6, 1974 14:40
49 years ago
4.7

54 km
90 km SW of Arawa, Bougainville, Papua New GuineaMore
Feb 3, 1974 10:06
49 years ago
4.4

53 km
44 km S of Torokina Islet Island, Bougainville, Papua New GuineaMore
Feb 2, 1974 07:30
49 years ago
4.6

36 km
105 km SW of Arawa, Bougainville, Papua New GuineaMore
Feb 1, 1974 23:07
49 years ago
4.8

33 km
63 km SW of Arawa, Bougainville, Papua New GuineaMore
Feb 1, 1974 15:24
49 years ago
5.6

48 km
113 km SW of Arawa, Bougainville, Papua New GuineaMore
Feb 1, 1974 11:22
49 years ago
5.1

33 km
103 km SW of Arawa, Bougainville, Papua New GuineaMore
Feb 1, 1974 08:24
49 years ago
5.8

33 km
82 km SW of Arawa, Bougainville, Papua New GuineaMore
Jan 26, 1974 22:22
49 years ago
4.6

15 km
44 km S of Wallis Island, New Ireland, Papua New GuineaMore
Jan 20, 1974 04:22
49 years ago
4.7

33 km
196 km S of Kokopo, East New Britain Province, Papua New GuineaMore
Jan 2, 1974 15:30
49 years ago
4.8

61 km
124 km SE of Kokopo, East New Britain Province, Papua New GuineaMore
Jan 1, 1974 18:52
49 years ago
5.0

104 km
116 km E of Kokopo, East New Britain Province, Papua New GuineaMore
Dec 28, 1973 18:49
49 years ago
5.2

25 km
60 km S of Torokina Islet Island, Bougainville, Papua New GuineaMore
Dec 23, 1973 15:45
49 years ago
5.0

93 km
20 km N of Lamassa Island, New Ireland, Papua New GuineaMore
Dec 23, 1973 05:35
49 years ago
4.3

46 km
120 km SW of North Island, Bougainville, Papua New GuineaMore
Dec 20, 1973 13:36
49 years ago
5.0

112 km
169 km E of Kokopo, East New Britain Province, Papua New GuineaMore
Dec 18, 1973 04:09
49 years ago
5.3

413 km
37 km SW of North Island, Bougainville, Papua New GuineaMore
Dec 6, 1973 18:17
49 years ago
4.2

54 km
Wallis Island, 93 km SE of Kokopo, East New Britain Province, Papua New GuineaMore
Dec 6, 1973 16:57
49 years ago
4.4

73 km
Lamassa Island, 57 km SE of Kokopo, East New Britain Province, Papua New GuineaMore
Dec 6, 1973 01:47
49 years ago
5.0

68 km
Torokina Islet, 76 km W of Arawa, Bougainville, Papua New GuineaMore
Nov 30, 1973 18:41
49 years ago
5.5

28 km
161 km W of Arawa, Bougainville, Papua New GuineaMore
Nov 14, 1973 01:27
49 years ago
4.6

422 km
Bougainville, 65 km SE of Bournand Island, New Ireland, Papua New GuineaMore
Nov 12, 1973 03:53
49 years ago
5.9

50 km
65 km W of Torokina Islet Island, Bougainville, Papua New GuineaMore
Nov 7, 1973 07:18
49 years ago
5.1

33 km
227 km SE of Kokopo, East New Britain Province, Papua New GuineaMore
Nov 6, 1973 14:45
49 years ago
4.9

47 km
84 km SW of Arawa, Bougainville, Papua New GuineaMore
Nov 5, 1973 13:34
49 years ago
5.5

15 km
177 km S of Kokopo, East New Britain Province, Papua New GuineaMore
Oct 28, 1973 02:27
49 years ago
5.2

49 km
Latangai Island, New Ireland, 84 km E of Kokopo, Papua New GuineaMore
Oct 14, 1973 22:06
49 years ago
5.4

60 km
Torokina Islet, 75 km W of Arawa, Bougainville, Papua New GuineaMore
Sep 29, 1973 20:32
49 years ago
4.9

13 km
106 km SW of Tanwoa Island, Bougainville, Papua New GuineaMore
Sep 15, 1973 23:09
49 years ago
4.9

63 km
72 km S of Arawa, Bougainville, Papua New GuineaMore
Aug 29, 1973 04:25
49 years ago
4.5

47 km
66 km SW of Wallis Island, New Ireland, Papua New GuineaMore
Aug 24, 1973 21:45
49 years ago
4.4

66 km
83 km S of Arawa, Bougainville, Papua New GuineaMore
Aug 22, 1973 00:00
49 years ago
4.7

64 km
20 km SW of Torokina Islet Island, Bougainville, Papua New GuineaMore
Aug 9, 1973 09:38
49 years ago
5.4

404 km
61 km S of Tanwoa Island, Bougainville, Papua New GuineaMore
Jul 27, 1973 23:36
49 years ago
5.1

75 km
62 km S of Torokina Islet Island, Bougainville, Papua New GuineaMore
Jul 27, 1973 23:01
49 years ago
5.2

45 km
32 km SW of Tanwoa Island, Bougainville, Papua New GuineaMore
Jul 27, 1973 21:59
49 years ago
5.4

60 km
75 km W of Torokina Islet Island, Bougainville, Papua New GuineaMore
Jul 27, 1973 07:34
49 years ago
5.0

38 km
169 km SW of Arawa, Bougainville, Papua New GuineaMore
Jul 27, 1973 06:10
49 years ago
5.0

107 km
29 km W of Taiof Island, Bougainville, Papua New GuineaMore
Jul 26, 1973 10:55
49 years ago
4.6

75 km
144 km SE of Kokopo, East New Britain Province, Papua New GuineaMore
Jul 13, 1973 14:06
49 years ago
5.3

55 km
26 km SW of Torokina Islet Island, Bougainville, Papua New GuineaMore
Jul 12, 1973 12:01
49 years ago
5.7

9 km
200 km W of Arawa, Bougainville, Papua New GuineaMore
Jul 6, 1973 04:26
49 years ago
4.2

158 km
41 km SE of Tanwoa Island, Bougainville, Papua New GuineaMore
Jul 3, 1973 17:58
49 years ago
4.8

27 km
199 km S of Kokopo, East New Britain Province, Papua New GuineaMore
Jun 29, 1973 13:48
49 years ago
5.4

99 km
39 km E of Wallis Island, New Ireland, Papua New GuineaMore
Jun 25, 1973 07:59
49 years ago
5.3

33 km
202 km W of Arawa, Bougainville, Papua New GuineaMore
Jun 19, 1973 02:10
49 years ago
5.2

48 km
38 km SW of Torokina Islet Island, Bougainville, Papua New GuineaMore
Jun 14, 1973 06:58
49 years ago
4.2

79 km
76 km S of Bournand Island, New Ireland, Papua New GuineaMore
Jun 12, 1973 12:21
49 years ago
4.9

47 km
48 km S of Torokina Islet Island, Bougainville, Papua New GuineaMore
Jun 9, 1973 20:19
49 years ago
4.9

36 km
118 km SW of Arawa, Bougainville, Papua New GuineaMore
Jun 9, 1973 01:59
49 years ago
5.2

148 km
45 km SW of North Island, Bougainville, Papua New GuineaMore
Jun 5, 1973 17:40
49 years ago
5.2

33 km
219 km W of Arawa, Bougainville, Papua New GuineaMore
May 27, 1973 00:58
49 years ago
4.9

34 km
246 km W of Arawa, Bougainville, Papua New GuineaMore
May 23, 1973 09:42
49 years ago
4.5

71 km
North Island, 165 km NW of Arawa, Bougainville, Papua New GuineaMore
May 12, 1973 22:46
49 years ago
4.8

44 km
33 km W of Lamassa Island, New Ireland, Papua New GuineaMore
May 8, 1973 12:28
49 years ago
4.4

105 km
38 km SW of Bournand Island, New Ireland, Papua New GuineaMore
May 6, 1973 19:02
49 years ago
4.5

44 km
89 km SE of Wallis Island, New Ireland, Papua New GuineaMore
May 2, 1973 13:18
49 years ago
4.3

39 km
128 km SE of Wallis Island, New Ireland, Papua New GuineaMore
May 1, 1973 07:37
49 years ago
4.6

13 km
215 km S of Kokopo, East New Britain Province, Papua New GuineaMore
Apr 10, 1973 08:12
49 years ago
4.8

33 km
206 km W of Arawa, Bougainville, Papua New GuineaMore
Apr 7, 1973 16:39
49 years ago
4.9

97 km
25 km W of Tanwoa Island, Bougainville, Papua New GuineaMore
Apr 7, 1973 05:08
49 years ago
4.4

78 km
22 km NE of Lamassa Island, New Ireland, Papua New GuineaMore
Mar 25, 1973 09:53
49 years ago
5.2

68 km
176 km SE of Kokopo, East New Britain Province, Papua New GuineaMore
Mar 21, 1973 08:42
49 years ago
4.6

42 km
148 km SE of Kokopo, East New Britain Province, Papua New GuineaMore
Mar 14, 1973 11:25
49 years ago
5.8

64 km
109 km S of Kokopo, East New Britain Province, Papua New GuineaMore
Mar 13, 1973 20:01
49 years ago
5.3

35 km
240 km S of Kokopo, East New Britain Province, Papua New GuineaMore
Mar 13, 1973 01:42
49 years ago
5.5

170 km
46 km SW of North Island, Bougainville, Papua New GuineaMore
Mar 9, 1973 15:50
49 years ago
4.3

96 km
Latangai Island, New Ireland, 60 km E of Kokopo, Papua New GuineaMore
Mar 6, 1973 15:51
49 years ago
5.1

28 km
166 km SE of Kokopo, East New Britain Province, Papua New GuineaMore
Feb 28, 1973 07:07
49 years ago
5.4

25 km
149 km SE of Kokopo, East New Britain Province, Papua New GuineaMore
Feb 2, 1973 00:17
50 years ago
4.7

33 km
156 km S of Wallis Island, New Ireland, Papua New GuineaMore
Jan 24, 1973 12:18
50 years ago
5.0

55 km
137 km SE of Kokopo, East New Britain Province, Papua New GuineaMore
Jan 21, 1973 12:19
50 years ago
4.6

46 km
94 km SE of Wallis Island, New Ireland, Papua New GuineaMore
Jan 16, 1973 18:09
50 years ago
5.3

50 km
36 km E of Latangai Island, New Ireland, Papua New GuineaMore
Jan 15, 1973 21:52
50 years ago
4.5

45 km
78 km SW of Torokina Islet Island, Bougainville, Papua New GuineaMore
Jan 15, 1973 13:45
50 years ago
4.2

53 km
73 km SW of Torokina Islet Island, Bougainville, Papua New GuineaMore
Jan 12, 1973 08:45
50 years ago
4.5

111 km
33 km W of Tanwoa Island, Bougainville, Papua New GuineaMore
Dec 17, 1972 18:00
50 years ago
5.7

41 km
176 km SE of Kokopo, East New Britain Province, Papua New GuineaMore
Oct 30, 1972 16:48
50 years ago
6.3

53 km
25 km W of Torokina Islet Island, Bougainville, Papua New GuineaMore
Oct 7, 1972 12:34
50 years ago
5.7

85 km
96 km E of Kokopo, East New Britain Province, Papua New GuineaMore
Aug 21, 1972 08:47
50 years ago
5.8

38 km
183 km SE of Kokopo, East New Britain Province, Papua New GuineaMore
Aug 18, 1972 00:23
50 years ago
6.1

20 km
201 km S of Kokopo, East New Britain Province, Papua New GuineaMore
Aug 17, 1972 23:44
50 years ago
7.5

20 km
204 km S of Kokopo, East New Britain Province, Papua New GuineaMore
Jul 30, 1972 20:13
50 years ago
6.0

10 km
31 km S of Kokopo, East New Britain Province, Papua New GuineaMore
Jul 30, 1972 17:40
50 years ago
6.0

10 km
22 km S of Kokopo, East New Britain Province, Papua New GuineaMore
Jul 11, 1972 15:46
50 years ago
5.6

20 km
212 km SE of Kokopo, East New Britain Province, Papua New GuineaMore
May 7, 1972 16:39
50 years ago
5.6

102 km
186 km E of Kokopo, East New Britain Province, Papua New GuineaMore
May 5, 1972 23:16
50 years ago
6.6

30 km
Mualim Island, 40 km E of Kokopo, East New Britain Province, Papua New GuineaMore
Apr 29, 1972 23:06
50 years ago
5.6

35 km
33 km S of Torokina Islet Island, Bougainville, Papua New GuineaMore
Show all

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