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Seismicity in Australia

For a listing of recent Australian earthquakes, follow this link


INTRODUCTION

Earthquakes can occur in almost every part of Australia, although certain regions have a higher likelihood of experiencing an earthquake than others. Possibly the most earthquake prone regions of Australia are the West Australian wheatbelt, and the Flinders Ranges of South Australia. The alpine region of eastern Australia is also relatively active. Three Australian earthquakes are known to have caused fatalities. The 1902 earthquake near Warooka, on the Yorke Peninsula of South Australia (mag 6.0), caused two deaths, attributed to heart attacks. The 1935 Gayndah earthquake in Queensland caused one death. By far the most significant was the 1989 earthquake at Newcastle, NSW (mag 5.6), which caused 13 fatalities, mostly because of the catastrophic structural collapse of the Newcastle Worker's Club.

The body responsible for producing risk maps of Australia is the Australian Earthquake Engineering Society.

West Australian seismicity is treated separately on this site. Seismicity for the rest of Australia is summarised below.

BELOW - Map of earthquakes superimposed on Digital Terrain Model - courtesy Dan Clark, Geoscience Australia

-Below - Earthquake Hazard map of Australia, 1991 (Australian Geological Survey Organisation, Canberra: McCue et al., 1993). A new version of this map was published by Geoscience Australia in 2012.

This map shows that the coastal regions of NW Australia are the most earthquake prone, and the region of east Australia to the west of the dividing range is the least.


TABLE OF IMPORTANT AUSTRALIAN EARTHQUAKES

DATE

LOCATION

MAG

Rank*cost*

COMMENTS

26 Jan 1892Bass St., Tas.6.9largest of a series of earthquakes
10 May1897Beachport, SA6.5712mmassive damage around Kingston, SA
19 Sep1902Warooka, Yorke Peninsula, SA6.0512mtwo known deaths
19 Nov 1906off west coast of WA7.5111.8E , 19.1S -largest Australian earthquake?
6 June 1918Gladstone, Qsld6.0one of largest E aust earthquakes, felt from Mackay to Grafton
29 Apr 1941Meeberrie, WA7.3the biggest onshore Australian event
27 June 1941Simpson Desert, NT6.5largest of a series of earthquakes
3 Jan 1954Adelaide, SA5.42152m$8.8 million in damage (in 1954 $)
22 May 1961Robertson/Bowral 5.6$500,00 (in 1961 $)
14 Oct 1968Meckering, WA6.8457m35 km surface rupture
2 June 1979Cadoux, WA6.2616msurface rupture
30 March 1986Marryat Ck, SA5.814 km surface rupture, 0.6 m vertical offset
22 Jan 1988Tennant Ck., NT6.73 events over mag 6 on this day
28 Dec 1989Newcastle, NSW5.615.3Bn13 killed, $1.5 Billion damage
8 Aug 1994Ellalong NSW5.4371mnear Newcastle - $40 m damage
20 Apr 2010Kalgoorlie5.083 people injured

*The ranking and dollar cost (2010 equivalent) of damage shown here is according to a table presented by James Daniell at the AEES conference in Perth, Nov 2010. The source is the CATDAT data base


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Although the Newcastle NSW earthquake of December 1989 was one of our most significant in terms of loss of life and damage, for sheer energy release, the activity which began in Tennant Creek, NT in January 1988, is probably more significant. Three magnitude 6 events occurred there within 24 hours, and complex surface rupturing occurred. Many thousands of aftershocks have occurred there since those events, and aftershocks are still occurring there.

Since the Tennant Creek earthquakes, the largest Australian event has been the Mag 6.3 event off Cockatoo Is., northern WA, in August 1997.

Between 2000 and 2002, a large swarm of earthquakes occurred near Burakin, WA. Burakin is approximately 200 km NE of Perth. Three earthquakes of magnitude 5.0 or more occurred in this earthquake swarm.

Since the 1997 Cockatoo Is. event, the largest Australian earthquake has been the magnitude 5.4 earthquake at Mt. Redvers, N.T., near the West Australian border. It occurred on Feb 11 2004.

The maps below were produced from extracts of the on-line data base of Geoscience Australia (www.ga.gov.au)


AUSTRALIAN EARTHQUAKES SINCE 1989, MAG 5.0 & ABOVE

DATE & TIME

LOCATION

MAG

REGION

1989/05/28 02:55:21.0 -25.25 130.655.6Uluru, NT
1989/12/27 23:26:57.0 -32.946 151.6075.7Newcastle, NSW

1990/01/17 06:38:05.78

-31.6730 116.9950

5.2

Meckering, WA

1991/03/07 01:28:10.54

-20.0820 134.0250

5.2

Tennant Ck

1991/06/19 11:38:23.39

-20.1340 133.9520

5.2

Tennant Ck

1991/07/08 10:45:33.78

-20.2250 133.8250

5.1

Tennant Ck

1992/06/13 18:05:17.88

-23.5800 130.2840

5.0

Uluru, N.T.

1992/07/15 00:17:05.14

-22.3630 126.5290

5.2

Canning Basin WA

1994/08/06 11:03:51.87

-32.9560 151.2280

5.4

Ellalong, NSW

1996/08/13 04:30:11.56

-30.0400 143.5600

5.0

White Cliffs, NSW
1997/08/10 09:20:31 -16.050 124.4236.3Collier Bay. WA

2000/08/29 12:05:51.67

-38.3850 146.2260

5.0

Boolarra, Vic

2000/10/11 19:27:13.28

-20.0650 112.9050

5.1

off Exmouth, W.A.

2001/09/14 15:18:28.77

-19.8670 133.7900

5.0

Tennant Ck

2001/09/28 02:54:54.27

-30.4750 117.3820

5.1

Burakin, WA

2001/10/19 17:43:20.10

-33.7080 120.6690

5.0

Ravensthorpe, WA

2002/03/05 01:47:38.04

-30.5200 117.1800

5.0

Burakin, WA

2002/03/30 21:15:46.1 -30.524 117.049 5.2Burakin, WA
2004/02/11 09:17:59.0 -22.73 129.895.0Mt. Redvers, NT
2004/02/11 09:30:39.3 -22.68 129.8235.4Mt. Redvers, NT
2006/05/13 01:04:46.7-27.657 135.7235.1E of Oodnadatta SA
2007/02/15 15:38:36-25.967  113.2765.3Shark Bay, WA
2009/03/06 01:35:59-16.314  121.2525.1NW of broome
2010/04/20 01:17:09-30.787  121.4895.0Kalgoorlie



Earthquakes in Queensland

Most of the seismicity in Queensland occurs along the eastern coastal region. One of the largest earthquakes to occur in eastern Australia occurred near Gladstone, north Queensland, in 1916. An important earthquake occurred near Gayndah in 1935. Although its magnitude was only 5.5, a worker was killed when he was shaken off a railway bridge near Biggenden.

Below - map of Queensland earthquakes, mag 3.0 & above, Jan 1990 to 12 May 2005

NB - for events of Mag > 4.5, date is shown alongside. Also, events north of 10 degrees South are not plotted.

Important Queensland earthquakes 1990 - May 2008

DATE

U.T.C.

LATITUDE

LONGITUDE

MAG

REMARKS

06 Aug 199114:11-18.22143.514.8Georgetown
24 Sep 199104:36-27.89149.054.1Felt in St. George area
29 Mar 199303:50-12.4139.225.2Gulf of Carpentaria
04 Sep 199401:08-16.99144.504.0Chillagoe, Felt
02 Nov 199817:09-22.81151.154.7North of Bundaberg
11 Aug 200307:04-18.44147.114.8E. of Ingham Felt Ingham, Cairns
16 Jan 200415:05-25.072151.2754.4120 km W of Bundaberg
28 Dec 200520:54-28.191147.8944.1200 km SW of Roma
25 Aug 200706:06-26.495151.4323.970 km NNE of Dalby
19 Nov 200702:48-12.336143.7354.8200 km East of Weipa
13 Feb 200821:57-27.551146.6514.2220 km WSW of Roma

Earthquakes in south east Queensland, 1990 - May 2005

the largest event in the map above was a mag 4.7 event north of Bundaberg on 2nd Nov 1998


Important historical Queensland earthquakes

DATE

G.M.T.

LATITUDE

LONGITUDE

MAG

REMARKS

28 Aug 188316:55-25.5151.675.6Gayndah
18 Dec 191313:54-20.0147.05.7Charters Towers
06 Jun 191818:14-23.5152.56.0Gladstone - felt widely
06 Jun 191819:20-23.5152.55.7
14 May 192802:46-15.0144.05.7
12 Apr 193501:32-25.5151.675.5Gayndah


Neotectonic Features in Queensland

The Geohazards Group of Geoscience Australia (Canberra, ACT), is responsible for identifying and researching potentially recent fault scarps in Queensland, and Australia as a whole. Two such features include the Palmerville Fault, in far North Queensland, and a probable fault north of Roma, in soiuth-central Queensland. For more information contact Dan Clark of Geoscience Australia.

Below - Palmerville Fault, North Queensland

Below - Forestvale Fault, north of Roma, Queensland

Images courtesy of Dan Clark, Geoscience Australia.


EARTHQUAKES IN NEW SOUTH WALES

Newcastle, approximately 120 km north of Sydney, was the site of Australia's most devastating earthquake, on 27 December, 1989. Although its magnitude was only 5.7, 13 people were killed, and the damage caused has been estimated at 4 billion dollars.

The most significant NSW earthquakes are tabulated below.

For additional information go to University of Sydney website

IMPORTANT EARTHQUAKES OF NEW SOUTH WALES

DATE

LAT

LONG

MAG

REGION

REMARKS

1949/03/10-34.74149.25.5Dalton/Gunningfelt up to MM VIII. felt from Sydney to Jindabyne
1959/05/18-36.218148.645.3Berridale
1961/05/24-34.547150.5035.8Bowral, NSW$500,000 damage (1961$AUD)
1966/08/13-30.040143.5605.1The Range
1972/02/25-34.22147.475.1Eastern Highlands
1973/03/09-34.17150.325.5Picton, NSWfelt up to MM VI felt as far away as Dubbo
1977/07/04-34.65148.894.8Bowning, NSW
1982/11/24-34.008147.2144.0Wyalong - swarm event
1983/06/20-30.22141.714.7Milparinka, NSW
1985/02/13-33.49150.184.3Lithgow NSW
1989/12/27 -32.496151.6075.7Newcastle, NSW13 Killed

1994/08/06

-32.956151.228

5.4

Ellalong, NSW

1996/08/13

-30.040143.560

5.0

White Cliffs, NSW
2003/12/11-34.485150.4444.2Bowralfelt in Sydney and Canberra
2006/10/21-34.04149.164.2SE of Cowrafelt widely
2008/03/18-32.519148.4333.7SW of Dubbofelt
2008/04/30-30.215141.623.6200 km N of Broken Hill
2008/06/09-30.167146.8813.7S of Brewarrina
2010/10/274.4NW of Bourke

Earthquakes in NSW, 1990 - August 2005, magnitude 3.0 & above

(for earthquakes in far south-east, refer to map of Victorian earthquakes)



NSW earthquakes, 2000 - 2010, mag >= 4.2

DATE

GMT

LAT

LONG

Mag

Location

27 Oct 2001075835.356143.6904.8Swan Hill (see Vic)
11 Dec 2003101934.485150.4444.2Bowral
21 Oct 2006095134.036149.1604.2SE of Cowra
27 Oct 2010141829.438143.5944.4NW of Bourke

VICTORIA, TASMANIA, SOUTHERN NSW and the A.C.T.

In the period Jan 1990 to March 2005, 183 earthquakes of magnitude 3.0 or more were located by Geoscience Australia, in the area defined below. Twenty of these were of magnitude 4.0 or more. Many of the larger events were offshore, in the Tasman Sea.

Events of magnitude 4.5 or greater (4.0 or greater since 2002) are tabulated below

DATE

G.M.T.

LATITUDE

LONGITUDE

MAG

REMARKS

17 Jan 199218:00-40.54155.674.6approx 700 km E of Tasmania
13 Jan 199318:50-49.2141.25.7approx 800 km SW of Tasmania
17 Mar 199901:58-34.23150.774.8Appin, NSW
29 Aug 200012:05-38.41146.295.0Boolarra South, Vic.
27 Oct 200107:58-35.36143.694.8Swan Hill, Vic. minor damage
7 Feb 200212:48-40.356143.8864.150 km S of King Is., Tas
15 Jun 200221:18-42.124147.4254.3100 Km NNE of Hobart
24 Sep 200207:42-38.67146.0834.050 km E of Wonthaggi,Vic
31 Jan 200405:42-37.327155.5834.3Tasman Sea
18 Nov 200423:31-41.662146.2024.0Mole Ck. Tas
29 Sep 200612:49-44.36145.014.4350 km SW of Hobart
14 Dec 200617:23-42.79143.564.4200 km WSW of Queenstown, Tas
01 Mar 200800:24-36.154144.6683.7SW of Echuca
06 Mar 200909:55-38.445145.8394.6Korumburra
18 Mar 200905:28-38.425145.8224.6Korumburra


Mag 3.0 & above earthquakes, 1990 - Mar 2005, for Victoria, Tasmania, southern NSW and the A.C.T.


TABLE OF EVENTS, MAG 5.5 OR MORE, SINCE JANUARY, 1900

(within area of above map)

DATE

G.M.T.

LATITUDE

LONGITUDE

MAG

REMARKS

13 Jan 191000:15-44.5155.26.0Tasman Sea
30 May 192114:51-35.0145.05.5Hay, NSW
10 Apr 192210:46-39.14144.855.7King Is.
18 Nov 193421:58-34.8149.25.6Gunning. NSW
14 Sep 194619:48-39.97149.355.8Tasman Sea, felt in Tas & Vic.
10 Mar 194922:30-34.74149.205.5Dalton, Gunning NSW
21 Oct 196121:40-34.55150.505.8Bowral, NSW
14 Sep 196512:53-38.7144.35.7Bass St, off Otway Ra., Victoria
03 May 196619:07-37.1147.175.7Mt. Hotham, Vic.
15 Dec 196619:08-40.45155.475.8Tasman Sea
09 Mar 197319:09-34.17150.325.5Picton, NSW
25 Nov 198319:56-40.45155.516.0Tasman Sea


The above table starts in January 1990, because there were many large events in the Tasman Sea in the 1880's and 1890's. These constituted an earthquake swarm of some importance, and would cause a lot of concern if it were to happen in modern times. The larger events were felt widely in Tasmania and Victoria.

LARGE EARTHQUAKES OF THE TASMAN SEA PRIOR TO 1900

DATE

G.M.T.

LATITIUDE

LONGITUDE

MAG

PLACE

13 Jul 188403:55-40.5148.56.4Cape Barren Is.
19 Sep 188410:27-40.8149.56.4Tasman Sea
12 May 188523:37-39.9148.96.8Tasman Sea
26 Jan 189216:48-40.4149.56.9Tasman Sea

For more information on recent seismicity in this region, visit the web site of the Seismology Research Centre in Melbourne.


EARTHQUAKES IN SOUTH AUSTRALIA

South Australia has had a number of significant earthquakes. The largest was the Beachport earthquake of May, 1897 ( magnitude 6.5), off the south-east coast of the state. This caused massive damage in the towns of Kingston, Robe and Beachport, and exhibited some phenomena which are only seen in major events - eg liquefaction.

The Warooka earthquake, on the Yorke Peninsula of S.A. in September 1902, is important because it was the first of only three Australian earthquakes known to have caused fatalities. At least two people died during this earthquake. Its magnitude was 6.0, and its epicentre was approximately 100 km west of Adelaide. It was felt strongly in Adelaide - isoseismal maps indicate an intensity of 6 on the Modified Mercalli scale in the city.

The Adelaide earthquake of March, 1954 was of relatively low magnitude (5.5), but did the most damage, because of its proximity to South Australia's major city.

For more information on South Australian earthquakes, visit the website of the Dept of Primary Industries & Resources of South Australia. For a list of the most recent earthquakes, follow this link 


Sth Aust earthquakes, mag 3.0 & above , Jan 1990 to August 2005

Yellow - Burra earthquake, 1997, Mag 5.0

Orange - earthquakes, magnitude 4.0 - 4.9

Below - more detailed view of Adelaide - Flinders Ranges region


South Australian earthquakes (magnitude > 4.2) since 1990

DATE

LATITUDE

LONGITUDE

MAG

REMARKS

08 Feb 199027.89137.344.5Lake Eyre North
05 Dec 199530.36137.954.6Myrtle Springs
09 Jun 199634.17135.824.5approx 50 km Nth of Pt Lincoln
05 Feb 199728.803139.1174.3Northern SA
05 Mar 199733.82138.975.0Burra ( 33 km east of Clare)
06 May 199834.149136.8784.3Spencer Gulf
09 Jun 199827.939135.8444.4Oodnadatta
18 Aug 199933.28138.4784.3Jamestown
22 Nov 200331.614138.784.2Hawker
13 Mar 200526.15131.644.6900 km NW of Pt Augusta
14 May 200531.0139.1534.5200 km NE of Pt Augusta
13 May 200627.657135.7235.140 km SE of Oodnadatta
16 Sep 200731.392138.5234.8150 km NE of Pt Augusta
06 Oct 200736.07136.114.250 km W of Kangaroo Is
26 Dec 200732.086138.3834.7100 km NE of Pt Augusta
16 Nov 200831.402138.7294.2150 km NE of Pt Augusta
26 Jan 200932.757139.0294.5NE of peterborough
16 Oct 200934.382133.2764.2W of Port Lincoln
05 June 201033.559136.7144.8NE of Cleve

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LARGE HISTORICAL EARTHQUAKES IN SOUTH AUSTRALIA (MAG > 5.5)

DATE

G.M.T.

LATITUDE

LONGITUDE

MAG

REMARKS

16 Apr 188722:10-34.3135.85.7Eyre Peninsula
10 May 189705:26-37.3139.76.5Beachport
19 Sep 190210:35-35.0137.46.0Warooka
26 Mar 193903:56-32.0138.05.8Motpena
04 May 194122:07-26.3136.95.8Simpson Desert
04 May 194123:23-26.3136.95.6Simpson Desert
06 Aug 194803:29-37.36139.685.6Robe
30 Mar 198608:53-26.33132.526.0Marryat Ck.
11 Jul 198607:17-26.26132.515.6Marryat Ck.

seismic stations

some of the seismic stations in Sth Aust : Red = PSN, Blue = GA & PIRSA stns

xxx

Earthquakes in Central Australia

The 1991 map of earthquake risk in Australia, published by the Australian Earthquake Engineering Society, shows three main areas of high earthquake risk in Central Australia. Each of these areas relates to sustained levels of high earthquake activity at certain points in Central Australia.

These points are 1) Tennant Creek Area 2) Simpson Desert and 3) the Lake Tobin area of eastern Western Australia.

Below - 1991 map of earthquake risk in Australia - zoomed in to Central Australia ( star shows location of a small Tennant Creek earthquake, March 2004)

Recent large eartquakes  ( Mag >= 4.0) in the Northern Territory

Date

GMT

Latitude

Longitude

Mag

Place

19 Mar 200507:29-26.091130.8684.1Central desert
14 Sep 200505:12-19.87134.14.4Tennant Ck
6 Feb 200806:46-13.402129.6644.2SW of Darwin

Below - earthquakes in Central Australia to 2004 on Digital terrain model

(figure courtesy of Geoscience Australia)

Below - Gravity map for the above area (Geoscience Australia data)


DESRIPTION OF SEISMICITY IN INDIVIDUAL AREAS OF CENTRAL AUSTRALIA

Simpson Desert

The Simpson Desert, in the southeast of the Northern Territory, near the SA border,  saw a series of large earthquakes in the 1930's, beginning with a magnitude 6.5 event on 28 Oct 1937. Another series of large events commenced with another magnitude 6.5 event on 27 June 1941. After a long period of inactivity, a magnitude 6.2 event occurred in the area on 28 Aug, 1972.

The earthquakes of the 1930's and 1940's occurred before the development of the modern seismographic network, which began to take shape in the 1960's. Consequently, the accuracy of the locations given is not high. The error in locations is probably of the order of +/- 50 km. Although there is some scatter in the location of the events, the location accuracy does not discount the possibility that they are more closely grouped than the map suggests.


Lake Tobin, WA.

Activity in this region began on 24 March 1970, with a magnitude 6.4 earthquake. Numerous other quite large events occurred in approximately the same location overn the ensuing years. A magnitude 5.0 event on 13 June 1992, near the location of the magnitude 6 events, is probably an aftershock of these events.

While seismic station coverage was much better for these events than the Simpson Desert events, the lack of close stations again means that location accuracy is not as high as might be hoped, particulary for the smaller events in the region.

Reference Denham, D., Everingham, I., and Gregson, P.  Journal of the Geological Society of Australia, 1974.


Tennant Creek

Activity in this region began on 7 Jan 1987 with a magnitude 5.2 event, followed by another of the same size two days later. Prior to  these events, the region had been classified as aseismic. Activity died away after these two events, but resumed on a much greater scale a year later, on 7 Jan 1988, when three magnitude 6 events occurred there on the same day, and a major surface fault scarp, approximately 35 km long was created. The southern block was thrust over the northern block, and the maximum vertical displacement was approximately 1 m. The maximum horizontal displacement was approximately 2 m.

Magnitudes have been given as 6.3, 6.4 and 6.7, but the values may vary slightly, according to the agency which computed the magnitudes. Major damage was caused to the SA to Darwin gas pipeline. Unlike the earlier events, these events occurred close to a major array of seismic recorders ( the Warramunga array), and the subsequent locations have a relatively high degree of accuracy.

Seismic activity at this location has remained at above average levels since the magnitude 6 events. Small earthquakes are still occurring, the latest being a magnitude 2.9 event in January 2004. Larger earthquiakes from this location can still be expected.

Reference: Crone, A., Machete, M., & Bowman, J., US Geological Survey Bulletin 2032 (1992)


Marryat Creek

On 30 March 1986, a magnitude 5.9 earthquake occurred at Marryat Creek, at the eastern end of the Musgrave Ranges, and about 10 km south of the SA-NT border. A 13 km long, L shaped fault scarp was created by this event. The maximum displacement was approximately 0.6 m. vertically, and 0.8 m in an E-W direction.

A magnitude 5.6 aftershock occurred near the March event on 11 July 1986. The remoteness of these two events means that location accuracy is not high, and the two events could be closer than the earthquake coordinates suggest.

For more information, refer to the PIRSA website.


Other important earthquakes in Central Australia

Uluru. On 28 May, 1989, a magnitude 5.8 event occurred in a remote area, west of Mt. Olga. It has been titled the "Uluru" earthquake. It was felt over a wide area, including Alice Springs, but did no damage. Unlike many other large earthquakes of central Australia, no aftershocks were recorded, even though portable seismographs were positioned near the epicentre shortly after the earthquake.

Mt. Redver. On 11 Feb 2004, a magnitude 5.4 earthquake occurred in the SW on the Northern Territory, near the WA border. A magnitude 5.0 foreshock occurred 15 minutes before the main shock.


Earthquake locations in Central Australia 1980 - 2004

from the ANSS catalog

Date       Time             Lat       Lon  Depth   Mag Magt  Nst 
----------------------------------------------------------------
1986/03/30 08:53:53.21 -26.1940  132.7670  10.00  5.80   Ms  193    
1986/07/11 07:17:59.07 -26.0790  132.7360  10.00  5.60   Mb  100
1987/01/07 20:01:52.22 -19.9730  133.8980  10.00  5.20   Mb   56   
1987/01/09 11:27:12.68 -20.1100  133.6360   5.00  5.20   Mb   75    
1988/01/22 00:35:58.07 -19.8470  133.8030   5.00  6.30   Ms  270   
1988/01/22 03:57:25.26 -19.7980  133.9100   5.00  6.40   Ms  309    
1988/01/22 04:18:46.92 -19.9780  133.6630   5.00  5.10   Mb   17  
1988/01/22 12:04:57.88 -19.8290  133.8820   5.00  6.70   Ms  344  
1988/01/27 11:27:17.12 -20.0670  133.6050   5.00  5.10   Mb   47    
1988/01/29 10:19:30.84 -20.0030  133.7450   5.00  5.60   Mb   98    
1988/02/06 05:23:57.95 -16.6790  124.6630  10.00  5.20   Mb   57  
1988/02/06 19:08:26.41 -19.5670  133.7990  10.00  5.00   Mb    7    
1988/09/30 20:42:58.13 -20.0480  133.8650   5.00  5.30   Mb   64     
1989/03/30 12:46:25.67 -19.9040  133.6450   5.00  5.30   Mb    7      
1989/05/28 02:55:19.65 -25.0530  130.7810  10.00  5.80   Mb  132
1991/03/07 01:28:10.54 -20.0820  134.0250   5.00  5.20   Mb   44    
1991/06/19 11:38:23.39 -20.1340  133.9520  10.00  5.20   Mb   49    
1991/07/08 10:45:33.78 -20.2250  133.8250   5.00  5.10   Mb   39     
1992/06/13 18:05:17.88 -23.5800  130.2840  10.00  5.00   Mb   28    
1992/07/15 00:17:05.14 -22.3630  126.5290  10.00  5.20   Mb   38   
1997/08/10 09:20:30.98 -16.0130  124.3290  10.00  6.30   Mw  269     
2004/02/11 09:17:58.00 -22.7380  129.8710  13.00  5.00   ML   32  
2004/02/11 09:30:39.00 -22.6800  129.8230  13.00  5.40   ML   37
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