List of Strong Earthquakes, 1974 - 1990
Data Time (UT) Coordinales Geographic area Depth Magnitude
km MS MB
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1974
MAY 10 19 25 15.0 28.200N 104.000E SZECHWAN PROVINCE, 11 6.8 6.2
CHINA
OCT 3 14 21 29.1 12.300S 77.800W NEAR COAST OF PERU 13 7.6 6.6
8 9 50 58.1 17.300N 62.000W LEEWARD ISLANDS 47 7.5 6.6
1975
FEB 2 8 43 39.1 53.100N 173.500E NEAR ISLANDS, 10 7.6 6.1
ALEUTIAN ISLANDS
MAY 10 14 27 38.7 38.183S 73.232W NEAR COAST OF 6 7.7 6.5
CENTRAL CHILE
26 9 11 51.5 35.997N 17.649W NORTH ATLANTIC 33 7.9 6.7
OCEAN
JUL 20 14 37 39.9 6.590S 155.054E SOLOMON ISLANDS 49 7.9 6.6
OCT 11 14 35 15.0 24.894S 175.119W SOUTH OF TONGA 9 7.8 7.0
NOV 29 14 47 40.4 19.334N 155.024W HAWAII 5 7.1 6.0
DEC 26 15 56 38.7 16.265S 172.467W SAMOA ISLANDS REGION 33 7.8 6.4
1976
JAN 14 15 56 34.9 29.208S 177.886W KERMADEC ISLANDS 69 7.8 6.3
14 16 47 33.5 28.427S 177.657W KERMADEC ISLANDS 33 8.0 6.5
REGION
FEB 4 9 1 43.4 15.324N 89.101W GUATEMALA 5 7.5 6.2
APR 8 2 40 27.0 40.311N 63.773E UZBEK SSR 33 7.0 6.5
MAY 6 20 00 11.6 46.356N 13.275E AUSTRIA 9 6.5 6.0
17 2 58 40.6 40.381N 63.472E UZBEK SSR 10 7.0 6.3
JUL 27 19 42 54.6 39.570N 117.978E NORTHEASTERN CHINA 23 7.9 6.3
28 10 45 35.2 39.664N 118.401E NORTHEASTERN CHINA 26 7.4 6.3
AUG 16 16 11 7.3 6.262N 124.023E MINDANAO, PHILIPPINE 33 7.9 6.4
ISLANDS
NOV 24 12 22 18.8 39.121N 44.029E N.W.IRAN-USSR BORDER 36 7.3 6.1
REGION
1977
MAR 4 19 21 54.1 45.772N 26.761E RUMANIA 94 7.2 6.4
APR 2 7 15 22.7 16.696S 172.095W SAMOA ISLANDS REGION 33 7.6 6.8
20 23 42 50.51 9.890S 160.348E SOLOMON ISLANDS 19 7.5 6.3
20 23 49 13.1 9.844S 160.822E SOLOMON ISLANDS 33 7.5 6.8
21 4 24 9.6 9.965S 160.731E SOLOMON ISLANDS 33 7.5 6.6
JUN 22 12 8 33.4 22.878S 175.900W TONGA ISLANDS REGION 65 7.2 6.8
AUG 19 6 8 55.2 11.085S 118.464E SOUTH OF SUMBAWA 33 7.9 7.0
ISLAND
1978
MAR 22 00 50 32.2 44.026N 149.002E KURIL ISLANDS 33 6.7 6.3
23 00 31 2.1 44.209N 148.971E KURIL ISLANDS 46 6.8 6.1
23 3 15 20.3 44.932N 148.439E KURIL ISLANDS 33 7.5 6.4
24 00 42 36.3 29.801N 67.400W NORTH ATLANTIC OCEAN 20 5.8 6.1
24 19 47 50.7 44.244N 148.862E KURIL ISLANDS 33 7.6 6.5
JUN 12 8 14 26.4 38.190N 142.028E NEAR EAST COAST OF 44 7.7 6.8
HONSHU, JAPAN
SEP 16 15 35 56.6 33.386N 57.434E IRAN 33 7.4 6.5
NOV 4 22 29 22.1 11.230S 162.176E SOLOMON ISLANDS 33 6.9 5.8
5 22 2 7.1 11.132S 162.136E SOLOMON ISLANDS 33 7.1 6.3
29 19 52 47.6 16.010N 96.591W OAXACA, MEXICO 18 7.7 6.4
1979
JAN 16 9 50 10.1 33.897N 59.472E IRAN 33 6.7 5.9
FEB 28 21 27 46.1 60.642N 141.593W SOUTHEASTERN ALASKA 15 7.1 6.4
MAR 14 11 7 16.3 17.813N 101.276W NEAR COAST OF GUER- 49 7.6 6.5
RERO, MEXICO
APR 15 6 19 44.1 42.096N 19.209E YUGOSLAVIA 10 6.9 6.2
SEP 12 5 17 51.4 1.679S 136.040E WEST IRIAN REGION 5 7.9 6.3
OCT 15 23 16 54.5 32.633N 115.333W CALIFORNIA-MEXICO 12 6.9 5.7
BORDER REGION
NOV 27 17 10 32.9 33.962N 59.726E IRAN 10 7.1 6.1
DEC 12 7 59 3.3 1.598N 79.358W NEAR COAST OF 24 7.7 6.4
ECUADOR
1980
JAN 1 16 42 40.0 38.815N 27.780W AZORES ISLANDS 10 6.7 6.0
MAY 25 16 33 44.7 37.600N 118.840W CALIFORNIA-NEVADA 5 6.1 6.1
BORDER REGION
27 14 50 57.1 37.475N 118.812W CALIFORNIA-NEVADA 13 6.0 5.7
BORDER REGION
JUL 8 23 19 19.8 12.410S 166.381E SANTA CRUZ ISLANDS 33 7.5 5.9
17 19 42 23.2 12.525S 165.916E SANTA CRUZ ISLANDS 33 7.9 5.8
OCT 10 12 25 23.5 36.195N 1.354E ALGERIA 10 7.3 6.5
NOV 1 22 52 19.6 18.954N 107.628W OFF COAST OF JALISCO 33 6.1 5.5
MEXICO
8 10 27 34.0 41.117N 124.253W NEAR COAST OF 19 7.2 6.2
NORTHERN CALIFORNIA
23 18 34 53.8 40.914N 15.366E SOUTHERN ITALY 10 6.9 6.0
1981
MY 25 5 25 14.4 48.786S 164.357E OFF W.COAST OF 33 7.6 6.1
S.ISLAND, N.Z.
SP 1 9 29 31.5 14.960S 173.085W SAMOA ISLANDS REGION 25 7.7 7.0
1982
JAN 9 12 53 51.8 46.984N 66.656W NEW BRUNSWICK 10 5.2 5.7
DEC 19 17 43 54.8 24.133S 175.864W SOUTH OF TONGA 33 7.7 5.9
ISLANDS
1983
MAR 18 9 5 50.0 4.883S 153.581E NEW IRELAND REGION 89 7.6 6.5
MAY 26 2 59 59.6 40.462N 139.102E NEAR WEST COAST OF 24 7.7 6.8
HONSHU, JAPAN
AUG 17 10 55 54.1 55.867N 161.287E NEAR EAST COAST OF 63 6.5 6.6
KAMCHATKA
OCT 28 14 6 6.6 44.058N 113.857W EASTERN IDAHO 10 7.3 6.2
NOV 30 17 46 00.6 6.852S 72.110E CHAGOS ARCHIPELAGO 10 7.6 6.6
REGION
1984
FEB 7 21 33 21.4 10.012S 160.469E SOLOMON ISLANDS 18 7.5 6.6
MAR 19 20 28 38.2 40.320N 63.350E UZBEK SSR 15 7.0 6.5
1985
MAR 3 22 47 7.2 33.135S 71.871W NEAR COAST OF 33 7.8 6.7
CENTRAL CHILE
SEP 19 13 17 47.3 18.190N 102.533W MICHOACAN, MEXICO 28 8.1 6.8
21 1 37 13.4 17.802N 101.647W NEAR COAST OF GUER- 31 7.6 6.3
RERO, MEXICO
1986
MAY 7 22 47 10.8 51.520N 174.776W ANDREANOF ISLANDS, 33 7.7 6.4
ALEUTIAN, ISLANDS
AUG 30 21 28 35.4 45.547N 26.316E ROMANIA 132 6.9 6.4
OCT 20 6 46 9.9 28.117S 176.367W KERMADEC ISLANDS 29 8.1 6.6
REGION
NOV 14 21 20 10.5 23.901N 121.574E TAIWAN 34 7.8 6.3
1987
NOV 30 19 23 15.0 58.679N 142.787W GULF OF ALASKA 10 7.6
1988
MAR 6 22 35 35.8 57.270N 142.790W GULF OF ALASKA 10 7.6
DEC 7 07 41 24.2 40.987N 44.185E TURKEY-USSR BORDER 5 6.8 6.2
REGION
1989
MAY 23 10 54 46.3 52.341S 160.568E MACQUARIE ISLAND 10 8.2 6.4
REGION
OCT 18 00 04 15.2 37.036N 121.883W CENTRAL CALIFORNIA 19 7.1 6.6
NOV 1 18 25 35.9 39.798N 142.835E NEAR EAST COAST OF 38 7.3 6.3
HONSHU
1990
APR 5 21 12 35.5 15.125N 147.596E MARIANA ISLANDS 11 7.5 6.5
REGION
MAY 30 10 40 06.1 45.841N 26.668E ROMANIA 89 6.7
JUN 20 21 00 09.9 36.957N 49.409E WESTERN IRAN 19 7.7 6.4
JUL 16 07 26 34.6 15.679N 121.172E LUZON, PHILIPPINE 25 7.8 6.5
ISLANDS
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List of seismological observatories of the former USSR
tooking part in the International Data Exchange
on Strong Eartquakes
Station name Code Co-ordinates
latitude longitude
o ' o '
1. Bakuriani BKR 41 44 N 43 31 E
2. Irkutsk IRK 52 16 104 18
3. Iul'tin ILT 67 50 178 48
4. Novosibirsk NVS 54 54 83 18
5. Obninsk OBN 55 10 36 36
6. Petropavlovsk PET 53 01 158 39
7. Sochi SOC 43 35 39 43
8. Magadan (Stekol'nyy) MAG 59 36 150 48
9. Talgar TLG 43 16 77 23
10. Tiflis TIF 41 43 44 48
11. Uzhgorod UZH 48 38 22 18
12. Frunze (Bishkek) FRU 42 50 74 37
13. Yuzhno-Sakhalinsk YSS 47 01 142 43
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Last revision September 22, 1995