9/56 YEAR CYCLE: IRANIAN EARTHQUAKES

APPENDIX 12

MAJOR IRANIAN EARTHQUAKES: 1900 - 2004

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Appendix for the paper 9/56 year Cycles: Earthquakes & Volcanoes.

The USGS listed 20 major earthquakes for Iran during the 20th century, of which 15 occurred in year ending August 31 of those years in the 9/56 year patterns (see Table A) (significant at p < .001).

The National Geophysical Data Center listed some 21 major Iranian quakes in the 20th century. Of this figure, 14 fell within the 9 months ending December 15 of those years in the 9/56 year patterns as shown in Table B (significant p < 10^-4).

Table A 9/56 YEAR CYCLE: MAJOR IRANIAN QUAKES 1900-2004 NGDC Year ending August 31
Sq 35	Sq 44	Sq 53	Sq 06	Sq 15	Sq 24	Sq 33	Sq 42	Sq 51	Sq 04	Sq 13	Sq 22	Sq 31	Sq 40	Sq 49	Sq 02	Sq 11	Sq 20	Sq 29
											1894	1901	1912	1921	1930 0506	1939	1948	1957 0702
					1896	1905	1914	1923 0525	1932	1941	1950	1959	1968 0831	1977 0321 1976 1124	1986	1995	2004 2003 1221
1907	1916	1925	1934	1943	1952	1961	1970	1979 1978 0916	1988	1997 0228	2006
1963 1962 0901	1972 0410	1981 0611 0728	1990 0620 0621	1999	2008
Dates expressed as YYYYMMDD. The 56 year sequences in the table are each separated by an interval of 9 years. Years in bold contained the biggest Iranian earthquakes in the 9 months beginning March 15 of those years in the table. Source of Raw Data: National Geophysical Data Center

Table B 9/56 YEAR CYCLE: MAJOR IRANIAN QUAKES 1900-2004 NGDC 9 months ending December 15
Sq 35	Sq 44	Sq 53	Sq 06	Sq 15	Sq 24	Sq 33	Sq 42	Sq 51	Sq 04	Sq 13	Sq 22	Sq 31	Sq 40	Sq 49	Sq 02	Sq 11	Sq 20	Sq 29
											1894	1901	1912	1921	1930 0506	1939	1948 1005	1957 0702 1213
					1896	1905	1914	1923	1932	1941	1950	1959	1968 0831	1977 0321	1986	1995	2004
1907	1916	1925	1934	1943	1952	1961 0611	1970	1979 1127	1988	1997 0510	2006
1963 0324 0331	1972 0410	1981 0729	1990 0620	1999	2008
Dates expressed as YYYYMMDD. The 56 year sequences in the table are each separated by an interval of 9 years. Years in bold contained the biggest Iranian earthquakes in the 9 months ending December 15 of those years in the table. Source of Raw Data: National Geophysical Data Center

EARTHQUAKES IN IRAN: 1900 - 2004 US Geological Survey
Date	Magnitude	Region
1909 01	7.3	5,500 killed
1923 05 25	5.7	2,200 killed
1929 05 01	7.4	3,330 killed
1930 05 06	7.2	2,500 killed
1945 11 27	8.2	Arabian Sea coast.
1957 07 02	7.4	Northern Iran.
1957 12 13	7.3	Hamadan & Kermanchah.
1962 09 01	7.3
1968 08 31	7.3	Khorassan Province
1972 04 10	7.1	Qir. Southern Iran.
1976 11 24	7.3	Northwestern Iran - Russia border.
1977 03 21	6.9	Bandar Abbas area.
1978 09 16	7.8	Tabas and surrounding areas.
1981 06 11	6.9	Kerman Province.
1981 07 28	7.3	Kerman region.
1990 06 20	7.4	Rasht-Qazvin-Zanjan & Rudbar-Manjil areas.
1990 06 21	5.8	Lowshan-Manjil area.
1997 02 28	6.1	Armenia-Azerbaijan-Iran border.
2002 06 22	6.5	Ab Garm-Abhar-Avaj-Shirin Su area.
2003 12 26	6.6	Bam area.
List of selected Iranian earthquakes post 1900. Years in BOLD contained the biggest Iranian earthquakes in the 12 months beginning September 1 of those years in Table B. Source: US Geological Survey.

EARTHQUAKES IN IRAN: 1900 - 2004 National Geophysical Data Center
Year	Month	Day	Region	Mag
1895	7	8	IRAN	7.5
1909#	1	23	IRAN	7.7
1929#	5	1	IRAN-CIS	7.2
1930#	5	6	SALMAS	7.2
1945#	11	27	IRAN	8
1947	8	5	IRAN	7.6
1948	10	5	CHENAR, SHEYKHAN, etc	7.5
1957#	7	2	IRAN	7.4
1957#	12	13	FARSINAJ	7.1
1961	6	11	LAR	7.2
1962#	9	1	BUYIN-ZAHRA	7.2
1963	3	24	IRAN	7.2
1963	3	31	IRAN	7
1968#	8	31	IRAN	7.3
1972#	4	10	IRAN	7.1
1977#	3	21	BANDAR ABBAS	7
1978#	9	16	IRAN	7.7
1979	11	27	IRAN	7.1
1981#	7	28	SE, KERMAN	7.1
1990#	6	20	RASHT, ASTARA, ZANJAN, GHAZVIN, TABRIZ	7.7
1997	5	10	BIRJAND, GHAEN, KORASAN	7.3
# Denotes those earthquakes that were also listed by the US Geological Survey. Years in bold contained the biggest Iranian earthquakes in the 9 months beginning March 15 of those years in the table. Source: National Geophysical Data Center. Parameters: Iran. mag =>7.0.