GLOBAL SEISMICITY AT MODERATELY HIGH LEVELS/ CENTRAL AMERICA ESPECIALLY ACTIVE

SUMMARY

Global seismicity increased considerably over the past day beginning
with the Mw 6.1 in the Caribbean Sea north of Panama. As noted in
the previous report, this was an unusual earthquake. It is also interesting,
however, that the epicenter of this event was close to the location of the
origin of the tropical depression which grew into Hurricane Michelle.
NHC gives this location as about 12N 83W. The Mw 6.1 today occurred
at 10N 82W.
The Caribbean Sea earthquake had been expected as a result of
both geomagnetic and hurricane effects in these reports. A number
of additional events in the region of Central America of Mb>=4
occurred over the past two days including those in Veracruz Mexico (Mb 4.4);
Oaxaca, Mexico (Mb 4.1); and a Mb 4.2 in the El Salvador region. This
later event was the first felt earthquake in El Salvador in more than
a month.

GLOBAL

Seismicity along mid-ocean ridges continued high today as well.
Events since our last report were listed in the South Sandwich Islands
(Mb 5.3, 4.6); the West Chile Rise (Mb 4.7) and the Reykjanes Ridge
(Mb 5.4).
Many other areas of the world also saw increased activity today.
In Asia a Mb 5.0+ was recorded in Taiwan tonight after a Mb 4.2
earlier in the day south of Taiwan. In the Island groups east of
Asia events were recorded in the Mariana Islands (Mb 4.8); the Volcano
Islands (Mb 4.1); and the Kuril Islands (Mb 4.9). In the Islands
south of Asia earthquakes were listed in Sulawesi (Mb 5.1); Vanuatu (Mb 4.8);
the Santa Cruz Islands (Mb 4.9) and New Britain (Mb 4.9). An earthquake
of Ml>4 was also noted in the Kyrgyzstan region of central Asia.
Several unusual earthquakes were also located (with preliminary
epicenters) in Europe. These occurred in Italy (Ml 4.0) and Northern
Algeria (Mb 4.7 (SED)). Two earthquakes with Ml about 3 were also
seen near the French-Swiss border.

U.S./CANADA

Seismicity in the U.S. and Canada remained relatively quiet for
the second day today. There were no earthquakes in the region (outside
Alaska) recorded with Ml>=3. The largest since last report occurred in the
Rat Islands, Alaska (Mb 4.0). The largest outside Alaska were two
of Ml 2.3 in southern California.
In the California/Nevada area, the largest events of the day were
Ml 2.3's WNS of Eagle Mountain, CA -about 80 km west of Anza in southern
California and in at Goldstone Lake about 150 km north of Anza, also
in southern California. Other events in So. California of Ml>=2
occurred at Yucca Valley (Ml 2.2); Yucaipa (Ml 2.2); Lake Isabella (Ml 2.0);
and Taft (Mb 2.1). Northern and central California were very quiet
with the only events of Ml>=2, two Ml 2.0's near the Geysers.
Two unusual events of Ml 1.6 and 1.5 hit this afternoon west
of Parkfield at New Idria and King City, CA. The largest events
along the Central portion of California were Ml 1.2 and 1.0 in the
Gilroy and Livermore regions.
A Ml 2.2 was recorded in the Kelly, WY area, the largest event
in the mountain and Pacific northwest today. In the Pacific
northwest, the only event of Ml>=1 was a Ml 1.5 N. of Wenatchee, WA.
No new events were listed in eastern Canada or U.S. today.

NEW ZEALAND

Two moderate earthquakes hit the area surround the Cook Strait
in the past 24 hours. These occurred near Nelson on South Island
(Ml 5.3) and along the Kapiti coast on North Island (Ml 4.7).
A third unlocated event of Ml>3.5 can also be found on the on-line
seismogram from IGNS. The two large events were subjects of IGNS
reports and were both felt in their respective regions.

The IGNS on-line Seismometer can be found at:
http://www.gns.cri.nz/news/earthquakes/latest_drum.html

GEOMAGNETIC/SOLAR FIELDS

The geomagnetic field remained at very quiet levels today, however
five M-Class solar flares were observed with the following parameters:

Flare # START MAX END CLASS

2500 + 0119 0133 0149 M1.6
2550 + 0520 0539 0548 M3.1
2600 + 0841 0856 0908 M3.3
2610 0915 0943 1001 M3.0
2710 + 1823 1841 1924 M1.9

Seismicity in California/Nevada at the times of these flares included:

2550 0537 36.5N 121.1W Ml 1.4
2600 0915 34.0N 117.1W Ml 2.2
2719 1839 34.5N 116.5W Ml 1.9
2719 1910 33.5N 116.5W Ml 1.7

The reason for adding this type of data is that if these events
are triggered by the flares, they may be "hair-triggered". This
could imply this is an area where a moderate or strong earthquake is in the
making - (or not), but it is only possible to know if this is
the case by looking at these over period of time and seeing where
the subsequent larger earthquakes occur.

For general space weather conditions see:
http://sec.noaa.gov/today.html
For Solar flare data see:
http://sec.noaa.gov/ftpdir/indices/events/20011109events.txt

TROPICAL STORMS

No tropical storms are currently active in the North Atlantic,
Caribbean or eastern Pacific today.

Typhoon Lingling is currently east of Sumatera and headed southwest
toward the Andaman Islands. Both areas are highly seismic. Low pressure
over Sumatera would lift that Island off the subducting slab reducing
normal stress and lessening friction. Seismicity seems likely
to increase in the region over the next three days due to this effect.
For a public advisory see:

http://www.wunderground.com/auto/HurricaneSite/tropical/wp200101.public.html

TIDAL TRIGGERING (LUNAR)

Statistics have been done on many regions of the world in terms of
relationship of significant regional earthquakes with respect to lunar cycle.
Each report will summarize the most likely areas for tidal triggering
for the next day based on these statistics. It is expected
that tidal triggering will add an additional 0.5 - 1.0 units of
magnitude to events which are about to occur or will move these
events forward in time by up to seven days in the regions where
there is a statistical correlation between lunar phase and
earthquakes.

November 10 is twenty-five days after the beginning the lunar month
Regions most likely to experience tidal triggering
on this day (With associated magnitude ranges; the percent change in
seismicity rate over background seismicity rate on this
day of the lunar month; statistical z-value and
significance level) are:

Region Magnitude range %change z-value Significance level

Antarctica MB>=4.0 343 2.8 0.02
India MB>=4.0 48 2.0 0.05
Yellowstone MB>=2.0 20 2.1 0.05

Regions expected to experience reverse triggering (i.e. they are
unlikely to experience a significant event at this period of the
lunar cycle) are:

Region Magnitude range %change z-value Significance level

Arctic MB>=4.0 -36 -2.3 0.05

EARTHQUAKE LISTINGS

GLOBAL

OCEANIA

O: 09NOV2001 05:36:10 53.1N 35.2W MB=5.4 NEIS REYKJANES RIDGE

O: 08NOV2001 17:42:55 27.6S 65.7E MB=5.2 NEIS INDIAN OCEAN TRIPLE JUNCTION

O: 08Nov2001 22:57:52 60.7S 25.8W MS=5.3 NEIS SOUTH SANDWICH ISL REGION
O: 08Nov2001 22:52:46 55.5S 30.0W MB=4.6 NEIS SOUTH SANDWICH ISL REGION

O: 08Nov2001 20:30:06 41.3S 85.6W MB=4.7 NEIS WEST CHILE RISE

NEW ZEALAND

O: 09Nov2001 04:56:35 41.6S 172.9E ML=5.3 NEIS SOUTH ISLAND, NEW ZEALAND

O: 9Nov2001 04:56 41.5S 173.3E ML=5.3 IGNS So. of Nelson, N.Z.
Note: (IGNS) Felt northern South Island, Wellington

O: 9Nov2001 11:48 40.6S 174.6E ML=4.7 IGNS North-west of Paraparaumu, N.Z.
Note: (IGNS) Light sleepers on the Kapiti coast probably felt this

SOUTH PACIFIC ISLANDS

O: 08Nov2001 09:57:40 17.5S 167.9E MB=4.8 NEIS VANUATU ISLANDS

O: 08NOV2001 08:53:25 5.2S 152.8E MB=4.9 NEIS NEW BRITAIN REGION, P.N.G.

O: 09Nov2001 19:07:54 10.6S 165.9E MB=4.9 NEIS SANTA CRUZ ISLANDS

ASIA

O: 10NOV2001 05:55:30 22.8N 120.9E ML=4.3 CWB Pingtung, Taiwan

O: 09Nov2001 20:14:42 11.9N 143.6E MB=4.8 NEIS SOUTH OF MARIANA ISLANDS

O: 09Nov2001 04:21:53 40.4N 73.0E ML>4.0 NEIS KYRGYZSTAN

O: 09Nov2001 00:44:56 22.7N 143.0E MB=4.1 NEIS VOLCANO ISL, JAPAN REGION

O: 08NOV2001 06:53:05 6.1S 123.8E MB=4.6 NEIS BANDA SEA

O: 08NOV2001 07:55:01 4.6N 126.2E MB=4.4 NEIS TALAUD ISLANDS, INDONESIA

O: 08NOV2001 11:38:02 1.6S 120.2E MB=5.1 NEIS SULAWESI, INDONESIA

O: 09NOV2001 03:14 35.9N 137.7E Mj=3.8 NIED WESTERN_NAGANO_PREF, JAPAN

O: 05NOV2001 20:08 29.9N 131.2E Mj=4.3 NIED NEAR_AMAMI-OSHIMA_ISLAND, JAPAN

O: 09NOV2001 08:35:41 44.7N 149.2E Ms=4.9 GSSC KURIL ISLANDS, RUSSIA

O: 01NOV2001 03:34:43 6.3N 94.7E mb=5.4 IMD Off coast Great Nicobar Island

O: 06NOV2001 14:39:16 27.9N 92.6E mb=5.0 IMD India-China border

CARIBBEAN

O: 07NOV2001 14:45:33 19.8N 64.4W ML=3.9 PRSN Puerto Rico Trench

CENTRAL/SOUTH AMERICA

O: 09NOV2001 21:14:50 13.0N 88.7W MC=4.2 SIS OFF COAST OF CENTRAL AMERICA
O: 09NOV2001 21:14:50 13.0N 88.8W MC=4.1 GETO 25 km S Bocana Rio Lempa
Note (Geotecnico): Felt III in San Salvador

O: 09NOV2001 00:48:04 10.3N 82.0W Mb=6.0 ULA Mar Caribe, Norte de Panama
O: 09NOV2001 00:47:58 9.7N 82.2W MC=5.7 CASC PANAMA/COSTA RICA, C.A.
O: 09NOV2001 00:47:57 9.6N 82.2W MB=6.1 NEIS PANAMA-COSTA RICA BORDER REG

O: 09NOV2001 09:09:43 10.4N 70.9W Mc=3.8 ULA Lagunillas, Venezuelaa.
O: 09NOV2001 10:05:04 10.3N 70.8W Mc=3.4 ULA Lagunillas, Venezuelaa.

O: 09NOV2001 05:49:37 12.6N 88.1W MC=3.9 SIS NICARAGUA, C.A.
O: 09NOV2001 09:50:32 12.4N 88.2W MC=3.5 SIS NICARAGUA, C.A.

O: 09NOV2001 05:48:11 9.6N 83.8W MC=3.8 CASC COSTA RICA, C.A.

O: 09NOV2001 12:51:06 17.2S 72.7W MB=4.7 NEIS NEAR COAST OF PERU

O: 09NOV2001 08:32:41 17.0N 100.1W ML=3.7 SSN COSTA DE GUERRERO, MX
O: 08NOV2001 11:04:12 17.0N 100.2W ML=3.8 SSN GUERRERO, MX
O: 08NOV2001 09:15:39 16.6N 100.0W ML=3.5 SSN COSTA DE GUERRERO, MX
O: 08NOV2001 06:13:18 17.0N 100.2W ML=3.6 SSN COSTA DE GUERRERO, MX
O: 08NOV2001 01:39:39 17.1N 100.2W ML=3.7 SSN GUERRERO, MX

O: 08NOV2001 18:29:37 16.4N 98.4W ML=4.1 SSN COSTA GUERRERO-OAXACA, MX

O: 08NOV2001 10:40:05 17.1N 95.3W ML=4.4 SSN VERACRUZ-OAXACA, MX

EUROPE/AFRICA

O: 02NOV2001 16:23:44 11.8N 43.2E ML=4.9 NEIS ETHIOPIA.

O: 07NOV2001 4:23:11 57.0N 5.8W ML=0.6 BGS MALLAIG,HIGHLAND, ENGLAND

O: 09NOV2001 04:20:25 43.8N 11.0E ML=4.0 STR ITALIE (REGION DE FLORENC

O: 09NOV2001 19:12:52 39.3N 27.4E ML=3.0 KAN BALIKESIR, TURKEY

U.S/CANADA

CALIFORNIA/NEVADA

O: 09NOV2001 03:05:30 34.8N 119.4W ML=2.1 SCSN S of Taft, CA

O: 09NOV2001 08:08:41 35.1N 116.8W ML=2.3 SCSN S of Goldstone Lake, CA

O: 09NOV2001 09:14:45 34.0N 117.0W ML=2.2 SCSN WSW of Yucaipa, CA

O: 09NOV2001 16:00:07 35.9N 118.3W MH=2.0 SCSN NNE of Lake Isabella, CA

O: 09NOV2001 16:25:37 33.8N 115.5W ML=2.3 SCSN WNW of Eagle Mtn., CA

O: 09NOV2001 18:39:21 34.4N 116.5W ML=2.2 SCSN N of Yucca Valley, CA

O: 09NOV2001 16:48:59 36.1N 117.9W ML=1.8 NCSN NE of Coso Junction, CA

O: 09NOV2001 23:32:02 36.3N 120.9W ML=1.6 NCSN WSW of New Idria, CA
O: 09NOV2001 20:42:10 36.4N 121.0W ML=1.5 NCSN NE of King City, CA

O: 09NOV2001 16:02:16 37.0N 121.5W ML=1.2 NCSN E of Gilroy, CA
O: 09NOV2001 16:28:23 37.5N 121.7W ML=1.0 NCSN SSE of Livermore, CA

O: 09NOV2001 22:25:55 38.8N 122.8W ML=2.0 NCSN WNW of The Geysers, CA
O: 09NOV2001 11:45:49 38.8N 122.8W ML=2.0 NCSN NE of The Geysers, CA

PACIFIC NORTHWEST/CANADA

O: 08NOV2001 23:48:43 47.5N 120.3W ML=1.5 PNSN N of Wenatchee, Wa

ROCKY MOUNTAIN AREA

O: 09NOV2001 18:57:56 43.5N 110.6W ML=2.2 USBR S of Kelly, WY

ALASKA

O: 09Nov2001 17:49:44 58.1N 151.6W ML>3.0 NEIS KODIAK ISL REGION, ALASKA

O: 08NOV2001 16:41:55 51.5N 176.1E MB=4.0 NEIS RAT ISLANDS, ALEUTIAN ISLANDS