9/56 YEAR CYCLE: CHINESE EARTHQUAKES

Appendix 4

9/56 YEAR CYCLE: CHINESE EARTHQUAKES

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

A listing of 34 major Chinese earthquakes (mag =>7.0) in the 1900 to mid 2008 era was compiled from data obtained from the National Geophysical Data Center. Of the total figure, 14 occurred in the 12 months beginning July 15 of those years in Table A (marginally significant p < .05). Curiously, 7 earthquakes happened in the 1.5 months commencing July 15 of those years in Table A. This arises from seasonality - of the total 34 Chinese earthquakes, 12 occurred in the 50 days between July 10 and August 29, which was in contrast to an expected 4.6.

Major Chinese earthquakes were least likely to happen in Sequences 22 to 36 of the 9/56 year cycle (see Table B), with only one event in 15 56 year sequences (significant p < .01).

Table A 9/56 YEAR CYCLE: CHINESE QUAKES 1900 - 2008 Year beginning July 15
Sq 52	Sq 05			Sq 32	Sq 41	Sq 50	Sq 03	Sq 12	Sq 21			Sq 48	Sq 01
										1902 0822	1911	1920 1216	1929
				1904	1913	1922 230324	1931 0810	1940	1949	1958	1967	1976 0727 0728	1985 0823
1924 230324	1933 0825	1942	1951 1118	1960	1969 0718 700104	1978	1987	1996	2005
1980	1989	1998	2007 080320 080512
The 56 year sequences in the table are separated from each other by an interval of 9 years. Years in bold contained major Chinese earthquakes in the 12 months commencing July 15. Dates expressed as YYYYMMDD. Sources of Raw Data: National Geophysical Data Center. Parameters: China, 1700 to 2004. Mag 7.0 to 9.9 US Geological Survey. Earthquakes post 2004.

Table B THE 9/56 YEAR CYCLE: CHINESE QUAKES Sqs 22 to 36 Year commencing July 15
22	31	40	49	02	11	20	29	38	47	56	09	18	27	36
														1908
							1901	1910	1919	1928	1937	1946 470317	1955	1964
	1903	1912	1921	1930	1939	1948	1957	1966	1975	1984	1993	2002
1950	1959	1968	1977	1986	1995	2004
2008
Chinese earthquake highlighted in bold fell in the year commencing July 15

MAJOR CHINESE EARTHQUAKES: 1900 - mid 2008
Year	Month	Day	Region	Mag
1902	8	22	S XINJIANG	8.1
1906	12	22	XINJIANG	8.3
1914	8	4	XINJIANG WEIWUER ZIZHIQU PROVINCE(SINKIANG)	7.5
1916	8	28	TIBET	7.7
1917	7	31	NE	7.5
1918	2	13	GUANGDONG PROVINCE	7.3
1920	12	16	GANSU & SHANXI PROVINCES	8.5
1923	3	24	SICHUAN PROVINCE	7.3
1925	3	16	YUNNAN PROVINCE	7.1
1927	5	22	GANSU PROVINCE	8.0
1931	8	10	XINJIANG WEIWUER ZIZHIQU PROVINCE	8.0
1932	12	25	GANSU PROVINCE	7.6
1933	8	25	SICHUAN PROVINCE	7.4
1937	1	7	QINGHAI PROVINCE	7.6
1947	3	17	QINGHAI PROVINCE	7.7
1948	5	25	SICHUAN PROVINCE	7.3
1951	11	18	TIBET	7.9
1952	8	17	TIBET (XIZANG PROVINCE)	7.5
1955	4	14	SICHUAN PROVINCE	7.4
1966	3	22	NE	7.6
1969	7	18	NE, OITA, KYUSHU	7.6
1970	1	4	YUNNAN PROVINCE	7.5
1973	2	6	SICHUAN PROVINCE	7.7
1973	7	14	TIBET	7.5
1975	2	4	NE: YINGTAO	7.4
1976	7	27	NE: TANGSHAN	8
1976	7	28	NE	7.4
1985	8	23	S XINJIANG: WU QIA	7.3
1995	7	11	CHINA/MYANMAR: LANCANG, MENGLIAN, XIMENG	7.1
1997	11	8	XIZANG PROVINCE	7.9
2001	11	14	QINHAI, XIDATAN	8
2002	06	28	Priamurye, NE China	7.3
2008	03	20	Xinjiang - Xizang border	7.2
2008	05	12	Eastern Sichuan	7.9
Events highlighted in bold fall in the year beginning July 15 of those years in Table A. Sources: National Geophysical Data Center. Significant Earthquake Database Search. Parameters: China. 1900 to 2004. Mag: 7.0 to 9.9. An earthquake was only entered once. Several quakes were listed twice or more in the NGDC listing. Quakes post 2004 were based on the listing by the United States Geological Survey.