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Appendix 15
MAJOR AUSTRALIAN EARTHQUAKES: 1870 - 2003
Moon Sun Finance
Appendix for 9/56
year Cycles: Earthquakes & Volcanoes.
The
Seismology Research
Centre
presented a map of major earthquakes in Australia since about 1880, while
the University of Western
Australia
gave a listing of major earthquakes in Western Australia since 1870. These
sources were combined, giving a total of 26 earthquakes (mag => 6.0)
for the period 1870-1998. Of the top 16 quakes (mag =>
6.4), 9 occurred in the 12 months commencing July 1 of those years in
Table A, which is in contrast to the expected
frequency of only 3.1. Even more remarkably, 6 quake events in Sequences
41, 50, 03 and 12 (see Table A) happened in the 6 months ended June 30 of
the following year, where
as 0.9 could have been expected by chance. Significance was mainly associated with
the most extreme events. For the 10 lesser quakes (magnitude between 6.0
and 6.3), only three fell in Table A, which could be expected by chance.
Of
the 26 major Australian quakes, 12 occurred in the 9/56 year grid shown in
Table A, which was significant (p < .01). The 56 year Sequence 12 was
the most important in Australian seismic history, as it contained 6 major
Australian earthquakes (mag =>6.2) in the 13 months beginning July 10.
| Sq 12 |
1884
0713
18850105
18850512 |
1940
19410429
19410627 |
1996
19970810 |
|
Table
A 9/56 YEAR CYCLE:
MAJOR AUSTRALIAN QUAKES
Year beginning July 1
|
Sq
41 |
Sq
50 |
Sq
03 |
Sq
12 |
Sq
21 |
Sq
30 |
Sq
39 |
Sq
48 |
Sq
01 |
Sq
10 |
Sq
19 |
| |
|
|
|
|
|
|
|
1873
1215 |
1882 |
1891
920626 |
| |
|
1875
|
1884
0713
850105
850512
|
1893 |
1902
09019 |
1911 |
1920 |
1929
0816 |
1938 |
1947 |
|
1913
|
1922 |
1931
|
1940
410429
410627
|
1949 |
1958 |
1967 |
1976 |
1985 |
1994 |
2003 |
|
1969
700324
|
1978
790602 |
1987
880122
|
1996
|
2005 |
|
|
|
|
|
|
|
The 56 year
sequences are separated by an interval of 9 years.
Years in bold contained
the biggest Australian earthquakes (mag => 6.4) in the 12
months beginning July 1 of those years in the table.
Years in bold contained
moderate Australian earthquakes (mag 6.0 to 6.3) in the 12
months beginning July 1 of those years in the table.
Dates expressed as YYYYMMDD.
Sources of Raw Data: Seismology Research
Centre
University of Western
Australia
|
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MAJOR AUSTRALIAN EARTHQUAKES
1870 - 2003 (mag =>
6.0)
|
| Mag |
Date |
Location |
| 7.6 |
November 19, 1906 |
Indian
Ocean off WA |
| 7.1 |
April 29, 1941 |
Meeberrie, WA |
| 6.9 |
June
26, 1892 |
Offshore Flinders Island, Tas |
| 6.8 |
May 12, 1885 |
Offshore Flinders Island, Tas |
| 6.8 |
May
10, 1897 |
Offshore Beachport, SA |
| 6.8 |
October 14, 1968 |
Meckering, WA |
| 6.8 |
May
6, 1978 |
Central
Australia, WA |
| 6.7 |
August 16, 1929 |
Offshore Broome, WA |
| 6.7 6.5 6.3* |
January 22, 1988 |
Tennant Creek, NT |
| 6.6 |
January 5, 1885 |
Offshore Geraldton, WA |
| 6.5 |
October 28, 1937 |
Simpson
Desert, NT |
| 6.5 |
June 27, 1941 |
Simpson Desert, NT |
| 6.4 |
July 13, 1884 |
Offshore Flinders Island, Tas |
| 6.4 |
March 24, 1970 |
Tobin Lake, WA |
| 6.4 |
July
16, 1971 |
Tobin
Lake, WA |
| 6.4 |
October 3, 1975 |
Tobin
Lake, WA |
| 6.3 |
March
23, 1964 |
Kimberleys, WA |
| 6.3 |
August 10, 1997 |
Collier
Bay, WA |
| 6.2 |
December 15, 1873 |
Central Australia |
| 6.2 |
September 15, 1946 |
Offshore Flinders Island, Tas |
| 6.2 |
August 28, 1972 |
Simpson
Desert, NT |
| 6.2 |
February 19, 1976 |
Offshore
Pilbara, WA |
| 6.2 |
June 2, 1979 |
Cadoux, WA |
| 6.1 |
May
19, 1965 |
Offshore eastern WA |
| 6.0 |
September 19, 1902 |
Warroka, SA |
| 6.0 |
June
7, 1918 |
Bundaberg, Qld |
|
* These three quakes were treated
as one event.
Earthquakes in bold occurred in the year
beginning July 1 of those years in Table A.
Sources: Seismology Research
Centre
University of Western
Australia
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