9/56 YEAR CYCLE: PHILIPPINE EARTHQUAKES

APPENDIX 10

9/56 YEAR CYCLE: PHILIPPINE EARTHQUAKES - 1600 - 2004

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

A listing of major earthquakes (1600 - 1900) was composed from a map presented by the Philippine Institute of Volcanology & Seismology. Of the 30 quakes given with a mag => 7.4 (see Table A this appendix), 17 appeared in the 12 months commencing February 1 of those years in Table B, which was highly significant (p < .001). Of the lesser quakes of about 6.9, only one occurred in these patterns and, if these were included, significance was greatly reduced.

The 44 large Philippine quakes post 1900 (National Geophysical Data Center) fell preferentially in a similar 9/56 year gird (p > .01) (see Table D this appendix).

There were 8 major quakes in four months ended August 15 of those years in the ensuing 9/56 grid (1900 - 2004, where as 2.6 could have been expected.

					1907 0418	1916	1925	1934	1943 0525
1918 0815 0815	1927	1936	1945	1954	1963	1972 0425	1981	1990 0614 0716	1999
1974	1983	1992 0517	2001
Years in Bold contain major Philippine earthquakes (mag => 7.4) in the four months ending August 15 of the years in the grid minus one year.

Table A EARTHQUAKES IN THE PHILIPPINES 1600 - 1900 (Mag => 6.9)
Earthquakes Mag => 7.4
December 3, 1608	7.4
November 3, 1619	8.4
December 1621	7.9
September 1627	7.4
November 30, 1645	8.4
November 5, 1677	8.4
October 19, 1688	7.4
January 14, 1721	7.4
December 25, 1735	7.4
January 12, 1743	8.4
May 13, 1787	7.9
November 5, 1796	8.4
October 26, 1824	7.4
January 18, 1830	7.4
March 22, 1840	7.4
September 16, 1852	7.9
June 3, 1863	7.9
September 27, 1863	7.4
October 19, 1865	7.9
August 16, 1869	7.4
October 11, 1869	7.4
December 8, 1871	7.4
July 1, 1879	7.4
July 18, 1880	7.4
February 2, 1887	7.4
February 7, 1890	7.4
March 6, 1892	7.9
August 15, 1897	7.9
September 21, 1897	7.9
October 19, 1897	7.4
Earthquakes Mag = 6.9
August 20, 1658	6.9
March 25, 1665	6.9
July 1675	6.9
September 19, 1687	6.9
1743	6.9
1744	6.9
1750	6.9
November 9, 1828	6.9
March 4, 1862	6.9
November 14, 1873	6.9
June 6, 1877	6.9
July 23, 1885	6.9
May 26, 1889	6.9
June 21. 1893	6.9
Years in Bold contain major earthquakes in the 12 months commencing February 1 of those years in Table B, this appendix. Source: Listing composed from a map by Philippine Institute of Volcanology & Seismology

Table B PHILIPPINE EARTHQUAKES & 9/56 YEAR CYCLES: 1600-1900
												1608 1203	1617
					1601	1610	1619 1103	1628	1637	1646	1755	1664	1773
1612	1621 12??	1630	1639	1648	1657	1666	1675	1684	1693	1702	1711	1720 210114	1729
1668	1677 1105	1686	1695	1704	1713	1722	1731	1740	1749	1758	1767	1776	1785
1724	1733	1742 430112	1751	1760	1769	1778	1787 0513	1796 1105	1805	1814	1823	1832	1841
1780	1789	1798	1807	1816	1825	1834	1843	1852 0916	1861	1870	1879 0721	1888	1897 0815 0921 1019
1836	1845	1854	1863 0603 0927	1872	1881	1890 0207	1899	1908	1917	1926	1935	1944	1953
1892 0306
Years in Bold contain major Philippine earthquakes (mag => 7.4) in the 12 months commencing February 1 of those years in the table. Source: Listing composed from a map by the Philippine Institute of Volcanology & Seismology

Table C EARTHQUAKES IN THE PHILIPPINES: 1900-2004 (Mag => 7.0)
Year	Mo	Dy	Name	Unk
1901	12	14	LUZON	7.8
1903	12	28	DAVAO GULF	7.8
1907	4	18	CAMARINES	7.6
1908	3	5	MINDANAO	7.5
1911	7	12	MINDANAO	7.7
1913	3	14	MINDANAO: DAVAO	7.9
1913	4	25		7.7
1918	2	7	MINDANAO	7.5
1918	8	15	MINDANAO: COTABATO	8.5
1918	8	15	MINDANAO: COTABATO,GLAN,SARANGANI I	8.3
1921	11	11	MINDANAO: E	7.5
1924	4	14	E MINDANAO: MATI,SURIGA	8.3
1924	8	30	MINDANAO: SURIGAO,BUTUAN	7.3
1925	11	13	SAMAR: LAOANG; BATAG I	7.3
1928	6	15	SW MINDORO	7
1929	6	13	MINDANAO: HINATUAN,EBRO	7.2
1931	3	19	LUZON: LAOAG,BACARRA,VIGAN,BATAC	6.9
1934	2	14		7.9
1937	8	20	LUZON	7.5
1942	4	8	MINDORO	7.8
1943	5	25	PHILIPPINES: E OF	8.1
1948	1	24	SULU SEA	8.3
1949	12	29	LUZON: E	7.2
1951	3	19		7.8
1952	3	19		7.8
1955	3	31	MINDANAO	7.6
1957	9	24		7.6
1968	8	1	LUZON: E	7.7
1970	1	10	MINDANAO	7.6
1970	4	7	LUZON	7.5
1972	4	25	MINDORO, LUZON, MANILA	7.5
1972	12	2	MINDANAO, DAVAO	7.8
1973	3	17	LUZON	7.5
1975	10	31	CALBAYOG	7.6
1976	8	16	MORO GULF	8
1977	3	18	LUZON: MANILA	7.5
1982	1	11	VIRAC, CATANDUANES	7.1
1989	12	15	MINDANAO: COTABATO, DAVAO	7.3
1990	6	14	CULASI, PANAY	7.1
1990	7	16	BAGUI, DAGUPAN CITY, RIZAL	7.8
1992	5	17	MINDANAO, TANDAG, BISLIG	7.5
1994	11	14	MINDORO	7.1
1999	12	11	S LUZON: MANILA, SANTA CRUZ	7.1
2002	3	5	MINDANAO	7.2
Years in Bold contain major Philippine earthquakes (mag => 7.4) in the 12 months commencing February 1 of those years in the table. Source of Raw Data: National Geophysical Data Centre

Table D PHILIPPINE EARTHQUAKES & 9/56 YEAR CYCLES: 1900-2004
					1908 19070418 0305	1917	1926 19251113	1935	1944 19430525
1919 19180815 19180815	1928	1937	1946	1955 0331	1964	1973 19720425 19721201 0317	1982 0111	1991 19900614 19900716	2000
1975	1984	1993 19920517	2002 19991211 0305

Years in Bold contain major Philippine earthquakes (mag => 7.4) in the 12 months ending March 31 of those years in the table. Source of Raw Data: National Geophysical Data Centre Parameters: Philippines. mag =>7.0. 1900 to present.