Table 2. Source Parameters of Magnitude 7.0 or Greater Earthquakes in or Adjacent to Alaska, 1898 - 1988

50 N - 72 N, 170 E to 130 W

[Note: MS is the 20-second surface-wave magnitude. mB is the broad-band body-wave magnitude. MW is the moment magnitude. Depths in parantheses were assigned rather than computed.] Modified from Plafker, G., Gilpin, L.M., and Lahr, J.C., 1994, Neotectonic map of Alaska, in v. G-1 of the Geology of North America, GSA. _______________________________________________________________________________
  Date     	 Time         	 Lat.  	Long.		Depth	(Ref) 				Magnitude  (Ref)
 Yr  Mo Da	Hr Mn Sec     	       				km  
________________________________________________________________________________________________________________________________________

1898 06 29	18 36 00	52N 	172E 	    		(Kanamori and Abe, 1979)	7.6 MS	(Abe and Noguchi, 1983b)
1899 07 14	13 32 00	60*N 	150*W 	     		(Kanamori and Abe, 1979)  	7.2 MS	(Abe and Noguchi, 1983b)
1899 09 04	00 22 00	60N 	142W 		60	(Gutenberg, 1956)         	7.9 MS	(Abe and Noguchi, 1983b)
1899 09 10	17 04 00	60N 	140W 		60	(Gutenberg, 1956)         	7.4 MS	(Abe and Noguchi, 1983b)
1899 09 10	21 41 00	60N 	140W 		60	(Gutenberg, 1956)         	8.0 MS	(Abe and Noguchi, 1983b)
1899 09 23	12 50 00	60N 	143W 		60	(Kanamori and Abe, 1979)	7.0 MS	(Abe and Noguchi, 1983b)
1900 10 09	12 28 17.6	57.09N 	153.48W 	(33)	(Boyd and Lerner-Lam, 1988)	7.7 MS	(Abe and Noguchi, 1983b)
1901 01 18	04 39 00	60N 	135**W 	    		(Kanamori and Abe, 1979)    	7.1 MS	(Abe and Noguchi, 1983b)
1901 12 31	09 02 43.1	51.45N 	171.02W 	(33)	(Boyd and Lerner-Lam, 1988)	7.1 MS	(Abe and Noguchi, 1983b)
1902 01 01	05 20 14.8	52.38N 	167.45W 	(33)	(Boyd and Lerner-Lam, 1988)	7.0 MS	(Abe and Noguchi, 1983b)
1903 01 17	16 05 07.1	50.85N 	175.16W 	(33)	(Boyd and Lerner-Lam, 1988)	7.0 MS	(Abe and Noguchi, 1983b)
1904 08 27	21 56 20.3	64.66N 	148.08W 	(33)	(Boyd and Lerner-Lam, 1988)	7.3 MS	(Abe and Noguchi, 1983b)
1905 02 14	08 46 38.4	50.73N 	178.55W 	(33)	(Boyd and Lerner-Lam, 1988)	7.3 MS	(Abe and Noguchi, 1983b)
1905 03 22	03 38 53.0	51.28N 	174.83E 	(33)	(Boyd and Lerner-Lam, 1988)	7.8 MS	(Abe and Noguchi, 1983b)
1905 09 15	06 02 34.3	52.06N	171.45E 	(33)	(Boyd and Lerner-Lam, 1988)	7.4 MS	(Abe and Noguchi, 1983b)
1906 08 17	00 10 47.2	51.05N	179.69W 	(33)	(Boyd and Lerner-Lam, 1988)	7.8 MS	(Abe and Noguchi, 1983b)
1906 12 23	17 21 11.7	56.85N 	153.90W 	(33)	(Boyd and Lerner-Lam, 1988)	7.3 MS	(Abe and Noguchi, 1983b)
1907 09 02	16 01 39.6	52.59N 	169.73E 	(33)	(Boyd and Lerner-Lam, 1988)	7.4 MS	(Abe and Noguchi, 1983b)
1908 05 15	08 31 36.0	59N 	141W 		60	(Gutenberg and Richter, 1954)	7.0 MS	(Abe and Noguchi, 1983b)
1909 04 10	19 36 00.0	52N 	175E 		(0)	(Abe and Noguchi, 1983b)   	7.0 MS	(Abe and Noguchi, 1983b)
1909 09 08	16 49 48.0	52 1/2N	169W 		90	(Gutenberg and Richter, 1954)	7.0 mB	(Abe, 1981)
1910 09 09	01 13 18.1	50.75N 	179.38E		(33)	(Boyd and Lerner-Lam, 1988)	7.0 MS	(Abe and Noguchi, 1983b)
1911 09 17	03 26 00.0	51N 	180E 		(0)	(Gutenberg, 1956) 		7.1 MS	(Abe and Noguchi, 1983b)
1912 01 31	20 11 48.0	61N 	147 1/2W 	80	(Gutenberg and Richter, 1954)	7.0 mB	(Abe, 1981)
1912 07 07	07 57 41.0	63.07N 	146.14W		(33)	(Boyd and Lerner-Lam, 1988)	7.2 MS	(Abe and Noguchi, 1983b)
1912 11 07	07 40 24.0	57 1/2N	155W 		90	(Gutenberg and Richter, 1954)	7.3 mB	(Abe, 1981)
1916 04 18	04 01 48.0	53 1/4N	170W 		170	(Gutenberg and Richter, 1954)	7.4 mB	(Abe, 1981)
1917 05 31	08 47 30.7	54.79N 	159.12W		(33)	(Boyd and Lerner-Lam, 1988)	7.9 MS	(Abe and Noguchi, 1983a)
1923 05 04	16 26 39.3	55.55N 	156.75W		(0)	(Sykes, 1971)           	7.1 MS	(Abe, 1981)
1926 10 13	19 08 07.0	52N 	176W		(0)	(Gutenberg and Richter, 1954)	7.0 MS	(Abe, 1981)
1927 10 24	15 59 44.8	57.69N	136.07W		(0)	(Tobin and Sykes, 1968)    	7.1 MS	(Abe, 1981)
1929 03 07	01 34 39.0	51N	170W		50	(Gutenberg and Richter, 1954)	7.5 MS	(Abe, 1981)
												7.8 MW	(Kanamori, 1977)
1929 05 26	22 39 54.0	51N 	131W 		(0)	(Gutenberg and Richter, 1954)	7.0 MS	(Abe, 1981)
1929 07 05	14 19 02.0	51N 	178W 		(0)	(Gutenberg and Richter, 1954)	7.0 MS	(Abe, 1981)
1929 07 07	21 23 12.0	52N 	178W 		(0)	(Gutenberg and Richter, 1954)	7.3 MS	(Abe, 1981)
1929 12 17	10 58 30.0	52 1/2N	171 1/2E 	(0)	(Gutenberg and Richter, 1954)	7.8 MS	(Abe, 1981)
1934 05 04	04 36 07.0	61 1/4N	147 1/2W 	80	(Gutenberg and Richter, 1954)	7.1 mB	(Abe, 1981)
1935 02 22	17 05 54.0	52 1/4N	175E 		(0)	(Gutenberg and Richter, 1954)	7.1 MS	(Abe, 1981)
1937 07 22	17 09 28.0	64.60N	147.10E		(33)	(International Seismol. Cen.)	7.3 MS	(Abe, 1981)
1937 09 03	18 48 12.0	52 1/2N 177 1/2W 	80	(Gutenberg and Richter, 1954)	7.2 mB	(Abe, 1981)
1938 11 10	20 18 41.2	55.48N 	158.37W 	(0)	(Sykes, 1971)              	8.3 MS	(Abe, 1981)
												8.2 MW	(Kanamori, 1977)
1938 11 17	03 54 34.0	55 1/2N	158 1/2W 	(0)	(Gutenberg and Richter, 1954)	7.3 MS	(Abe, 1981)
1940 04 16	06 43 07.0	52N 	173 1/2E 	(0)	(Gutenberg and Richter, 1954)	7.1 MS	(Abe, 1981)
1940 07 14	05 52 53.0	51 3/4N	177 1/2E 	80	(Gutenberg and Richter, 1954)	7.4 mB	(Abe, 1981)
1940 08 22	03 27 18.0	53N 	165 1/2W 	(0)	(Gutenberg and Richter, 1954)	7.0 MS	(Abe, 1981)
1943 11 03	14 32 17.5	61.90N 	150.84W		(0)	(Sykes, 1971)               	7.4 MS	(Abe, 1981)
1944 07 27	00 04 23.0	54N 	165 1/2W 	70	(Gutenberg and Richter, 1954)	7.1 mB	(Abe, 1981)
1946 04 01	12 28 54.0	52 3/4N	163 1/2W 	(0)	(Gutenberg and Richter, 1954)	7.3 MS	(Abe, 1981)
1946 11 01	11 14 24.0	51 1/2N	174 1/2W 	40	(Gutenberg and Richter, 1954)	7.0 MS	(Abe, 1981)
1947 10 16	02 09 44.0	64.20N 	148.30W		(33)	(International Seismol. Cen.)	7.2 MS	(Abe, 1981)
1948 05 14	22 31 43.0	54 1/2N	161W 		(0)	(Gutenberg and Richter, 1954)	7.5 MS	(Abe, 1981)
1949 08 22	04 01 12.2	53.62N 	133.27W		(0)	(Tobin and Sykes, 1968)    	8.1 MS	(Abe, 1981)
												8.1 MW	(Kanamori, 1977
1951 02 13	22 12 53.8	55.55N 	156.35W		(0)	(Sykes, 1971)              	7.1 MS	(Abe, 1981)
1953 01 05	07 48 20.0	53N 	171 1/2E 	(0)	(International Seismol. Cen.)	7.1 MS	(Abe, 1981)
1957 03 09	14 22 32.15	51.48N	175.72W		(33)	(T.M. Boyd, writ. com., 1987)	8.1 MS	(Abe, 1981)
												9.1 MW 	(Kanamori, 1977)
												8.7 MW  (Johnson and others, 1994)
1957 03 09	20 39 16.70	52.56N 	169.65W		(33)	(T.M. Boyd, writ. com., 1987)	7.1 MS	(Abe, 1981)
1957 03 11	09 58 44.00	52.58N 	169.24W		(33)	(T.M. Boyd, writ. com., 1987)	7.0 MS	(Abe, 1981)
1957 03 12	11 44 56.96	51.44N 	177.40W		(33)	(T.M. Boyd, writ. com., 1987)	7.0 MS	(Abe, 1981)
1957 03 14	14 47 50.97	51.24N 	176.92W		(33)	(T.M. Boyd, writ. com., 1987)	7.1 MS	(Abe, 1981)
1957 03 16	02 34 17.86	51.41N 	178.93W		(33)	(T.M. Boyd, writ. com., 1987)	7.0 MS	(Abe, 1981)
1957 03 22	14 21 07.10	53.71N 	165.82W		(33)	(T.M. Boyd, writ. com., 1987	7.0 MS	(Abe, 1981)
1958 04 07	15 30 40.30	65.99N 	156.55W		(0)	(Tobin and Sykes, 1966) 	7.3 MS	(Abe, 1981)
1958 07 10	06 15 53.60	58.34N 	136.52W		(0)	(Tobin and Sykes, 1968) 	7.9 MS	(Abe, 1981)
												7.7 MW	(Abe and Kanamori, 1980)
1964 02 06	13 07 23.10	55.72N 	155.95W		13	(International Seismol. Cen.)	7.0 MS	(Abe, 1981)
1964 03 28	03 36 13.90	61.05N 	147.48W		23	(International Seismol. Cen.)	8.4 MS	(Abe, 1981)
												9.2 MW	(Kanamori, 1977)
1965 02 04	05 01 21.60	51.29N 	178.55E		36	(International Seismol. Cen.)	8.2 MS	(Abe, 1981)
												8.7 MW	(Kanamori, 1977)
1965 02 04	08 40 42.10	51.39N 	179.59E		40	(International Seismol. Cen.)	7.0 MS	(Abe, 1981)
1965 03 30	02 27 03.40	50.32N 	177.93E		20	(International Seismol. Cen.)	7.4 MS	(Abe, 1981)
1969 05 14	19 32 55.00	51.29N 	179.85W		22	(International Seismol. Cen.)	7.0 MS	(USGS, PDE)
1970 06 24	13 09 11.30	51.77N 	130.76W		22	(International Seismol. Cen.)	7.0 MS	(USGS, PDE)
1971 05 02	06 08 26.90	51.42N 	177.21W		38	(International Seismol. Cen.)	7.1 MS	(USGS, PDE)
1972 07 30	21 45 15.80	56.77N 	135.91W		29	(International Seismol. Cen.)	7.4 MS	(Abe, 1981)
												7.6 MW	(Schell and Ruff, 1989)
1975 02 02	08 43 39.90	53.08N 	173.58E		0	(International Seismol. Cen.)	7.4 MS	(Abe, 1981)
1979 02 28	21 27 07.20	60.64N 	141.60W		13	(Stephens and others, 1980)	7.1 MS	(Buland and Taggart, 1981)
												7.5 MW	(Buland and Taggart, 1981)
1986 05 07	22 47 10.80	51.52N 	174.78W		(33)	(USGS, PDE)               	7.7 MS	(USGS, PDE)
												8.0 MW	(Hwang and Kanamori, 1986)
1987 11 30	19 23 16.39	58.91N 	142.76W		(10)	(Lahr and others, 1988)   	7.6 MS	(USGS, PDE)
												7.9 MW	(Page and others, 1991)
1988 03 06	22 35 36.38	57.23N 	142.78W		(10)	(Lahr and others, 1988)   	7.6 MS	(USGS, PDE)
												7.8 MW	(Page and others, 1991)
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* Epicenter unreliable.  Based on felt reports from Unga and Unalaska Islands (Tarr and Martin, 1912), epicenter may be 
near tip of Alaska Peninsula (Davies and others, 1981).
** Epicenter unreliable.  No constraints or confirmation from felt reports.
Acknowledgements:  This table has evolved from a compilation by James Taggart which was generously shared with us.  Tom 
Boyd kindly provided unpublished hypocenter and origin time parameters.  This tabulation also benefitted from 
comparisons to the compilation that E.R. Engdahl prepared for the DNAG map of North American seismicity.  Earthquakes 
north of 55oN and east of 175oW are taken from the table Page and others (1991).  




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