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Earth and Sun Digest 2004/04/29: A TIE FOR TEN YEAR HIGH FOR BIG QUAKE!
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Posted by Canie on April 29, 2004 at 12:09:56:
I apologize for formatting errors - lets see if this is any better than the last one. Canie
The Past Week Ticker
M19, T20, W21,
Th22/MC/6.0M, F23/MC(2)/6.7M, Sa24/6.0M, Su25/MC, M26,
T27/6.0M, W28, Th29/6.1M
Moon for May 2004
per Astronomy Magazine in EDT
4 full moon, 6 perigee, 11 last quarter, 19 new moon, 21 apogee, 27 first quarter
The moon is at perigee (223,576 miles near) on 12:32 AM EDT on 6 May.
The Eta Aquarid Meteor Shower peaks on May 4.
THE TAILS OF THREE COMETS
Comet (C/...) 2002 Q4 (NEAT) 2002 T7 (LINEAR) 2004 F4 (BRADFIELD)Closest May 15 April 23 April 17
to Sun* 0.96 AU 0.61 AU 0.17 AU
Closest May 7 May 19 April 23
to Earth, 0.32 AU 0.27 AU in retreat
Peak Brightness 1.1** 0.6 3.9
Visible
after Sunset May 6 Mid May No
in mid-Northern Hemisphere
* closet to sun has longest tail, but full moon obscures it.
** closest to 0.0 is brightest
Note: Comets now visible before sunrise, LINEAR and BRADFIELD, binoculars advised, photos available at
www.spaceweather.com
.
A total lunar eclipse on May 4 but is not visible in U.S.
A partial solar eclipse on 19 April was only visible south of Equator.
Asteroids Nearest Earth in 2004:
2004 FH on 18 March by 0.125 LD, closest of the year to date.
2004 FY 15 on 27 March by 0.6 LD's
Earth and Sun Digest for April 29, 2004
THREE COMETS, BIG QUAKE COUNT TIES 10 YEAR HIGH...
...Week at a Glance (with time ticking)
(Source data can change without notice or correction.)
A SPECIAL STUDY OF PLANET EARTH ACTIVITY, WITH RELATED FEATURES
Earthquakes of 5.0 to 5.9M thru Wednesday--16 (Jap-0, SoPac-13);
Five quakes of 6M or greater: 4/29 6.1M OFF COAST OF COSTA RICA, 4/27 6.0M VANUATU, 4/24 6.0M TONGA, 4/23 6.7M SAVU SEA, 4/04/22 6.0M BISMARCK SEA
California and Nevada earthquakes in past week--360; no quakes of 4M or greater
Volcanic ash near Jet Stream (at 5 mi/8 km)--none
YEARS OF MONTHLY COUNTS of Earthquakes of 6 or greater Magnitude
in the World, per USGS/NEIC Preliminary Global Report
YEAR: 93 94 95 96 97 98 99 00 01 02 03 04May 3 15 17 8 9 6 9 5 8 7 16 with two 7M's
June 1 11 12 12 3 3 3 22 10 14 12 with one 7M
July 2 10 12 7 5 9 8 9 10 5 15 with one 7M
August 2 14 16 6 7 8 9 12 8 12 8 with two 7M's
September 4 8 8 9 7 4 12 7 10 13 18 with 2 7M's, 1 8M
October 4 12 21 9 6 3 4 8 11 21 11 with one 7M
November 0 7 10 6 7 4 15 15 10 11 13 with one 7M
December 0 6 13 7 3 2 16 11 7 11 17 with one 7M January 2 1 13 10 4 7 5 8 10 14 10 11 with one 7M
February 1 12 13 18 7 4 6 4 14 6 5 13 with two 7M's
March 0 2 8 13 5 7 8 5 5 10 15 10
April 0 12 17 4 9 6 8 3 9 7 8 (17) YR total 19 110 160 109 76 63 103 109 112 133 145 (51)
Sunspot No. high and low--90 on 22 April to 28 on 27 April
Largest and smallest daily total area of sunspots--520 on 22 April to 290 on 28 April (100 = Earth)
X-Class Solar Flares: none; last M-Class flares (5+/day) 5 on 27 October (Ticker has fewer MC.)
(See
http://www.sel.noaa.gov/today.html )
Planetary Geomagnetic Indices: high of 20 on 23 April; last set of five or more Kp's of 4 or more per 24 hours: 3-6 April
Recent Volcanic Eruptions: TWO GROUPINGS
1. For Northern Ash and Gas Eruptions
affecting prevailing winds blowing northeast from latitude 23°N.
KARYMSKY Kamchatka Peninsula, Russia 54.05°N, 159.43°E; summit elev. 1,536 m
during 16-23 April, based on seismic data, ash-and-gas plumes possible to 2.5-3.5 km daily
SAKURA-JIMA Kyushu, Japan 31.58°N 130.67°E; summit elev. 1,117 m
on 25 April an ash plume to a height of ~2.4 km
SHIVELUCH Kamchatka Peninsula, Russia 56.653°N, 161.360°E; summit elev. 2,283 m
based on seismic data, during 15-18, and 21 April six ash-and-gas plumes to 4-7 km possible, the
highest rising observed plume of 8 km from an ash-and-gas explosion on 18 April
VENIAMINOF Alaska Peninsula, USA 56.17°N, 159.38°W; summit elev. 2,507 m
during the afternoon and evening of 25 April more than 25 small
steam-and-ash emissions during an 8-hour period, producing clouds to 3.1 km
typically confined to the summit caldera on 14 April an ash plume to ~3 km
<
BR>2. For World Effects of Ash and Gas Eruptions
from winds blowing westward along the Equator at less than 23°N or S
ANATAHAN Mariana Islands, central Pacific Ocean 16.35°N, 145.67°E; summit elev. 788 m
; All times are local (= UTC + 10 hours) seismicity increasing abruptly on
24 April at 1052 to a level that not reached since the summer of 2003, around
0600 on 26 Aprily leveling off, later that day, during two 30-minute observation
periods, regular puffs of yellow/brown steam and ash at 1- to 2-minute
intervals, during 24-26 April steam-and-ash plumes to a maximum height of about
1.4 km, on 24 April a thin plume visible on satellite imagery at ~1.8 km
BAGANA Bougainville Island, Papua New Guinea 6.14°S, 155.19°E; summit elev. 1,750 m
new lava around 2240 on 27 April
DUKONO Halmahera,
Indonesia 1.70°N, 127.87°E; summit elev. 1,185 m
during 21-27 April ash plumes visible on satellite imagery to heights of ~3 km
FUEGO Guatemala 14.47°N, 90.88°W; summit elev. 3,763 m
during 22-27 April gas-and-steam clouds to ~4.8 km
KILAUEA Hawaii, USA 19.43°N, 155.29°W; summit elev.
1,222 m
during 22-27 April lava slowly flowing down the Pulama Pali
SANTA MARÍA Guatemala 14.756°N 91.552°W; summit elev. 3,772 m
during
22-27 April gas-and-ash plumes to ~4.8 km
SEMERU Java, Indonesia 8.11°S,
112.92°E; summit elev. 3,676 m
an ash plume visible on satellite imagery on
21 April to ~4.6 km
SOUFRIÈRE HILLS Montserrat, West Indies 16.72°N,
62.18°W; summit elev. 1,052 m
volcanic activity at low levels during 16-23
April, the sulfur-dioxide flux peaking at 1,030 metric tons per day on 16
April
TUNGURAHUA Ecuador 1.47°S, 78.44°W; summit elev. 5,023 m
volcanic activity during 22-26 April at moderate levels, on 21 April a
column of steam, gas, and ash to a height of ~6 km, a plume reached ~5.5 km on
22 April
Ash data is summarized from the weekly GVN/USGS report
at
http://www.volcano.si.edu/reports/usgs/
All ash elevations are in km above sea level (a.s.l.) and times are converted to
UTC. For time changes, check the table at the end of the USGS website
below.
The earthquake data that follows are taken from U.S. Geological
Survey tables available through
http://neic.usgs.gov/neis/bulletin/bulletin.html
.
EARTH FIVE Index of Global earthquakes of 5.0 magnitude or greater for past weekDATE-(UTC)-TIME LAT LON DEP MAG Q COMMENTS
yy/mm/dd hh:mm:ss deg. deg. km READ UP for latest report. 04/04/29 00:57:2510.69N86.02W40.6 6.1OFF COAST OF COSTA RICA
04/04/28 11:45:1016.58S172.94W12.2 5.3SAMOA ISLANDS REGION
04/04/28 09:53:0222.46S170.82E10.0 5.0SOUTHEAST OF LOYALTY ISLANDS
04/04/28 04:09:0412.19N87.51W95.0 5.5NEAR COAST OF NICARAGUA
04/04/27 23:28:2117.79S167.78E30.0 6.0VANUATU
04/04/26 16:05:428.66S114.60E85.0 5.0BALI REGION, INDONESIA
04/04/26 06:57:5521.08S174.43W10.0 5.8TONGA
04/04/25 07:29:3321.78S169.70E10.0 5.2SOUTHEAST OF LOYALTY ISLANDS
04/04/25 02:19:2121.78S169.60E10.0 5.7SOUTHEAST OF LOYALTY ISLANDS
04/04/24 23:19:1029.15S112.23W10.0 5.2EASTER ISLAND REGION
04/04/24 23:00:2228.99S112.16W10.0 5.4EASTER ISLAND REGION
04/04/24 07:44:1121.86S174.80W10.0 6.0TONGA
04/04/23 01:50:319.34S122.71E75.5 6.7SAVU SEA
04/04/22 14:16:033.40S146.89E20.0 6.0BISMARCK SEA
04/04/22 10:15:1117.66S167.99E24.6 5.7VANUATU
04/04/22 10:11:1217.54S167.91E10.0 5.9VANUATU
04/04/22 10:02:1533.90N89.22E8.6 5.1WESTERN XIZANG
04/04/22 09:49:2217.60S167.80E10.0 5.0VANUATU
04/04/22 03:11:3717.59S167.72E10.0 5.0VANUATU
04/04/22 03:05:3917.68S167.86E25.4 5.2VANUATU
04/04/22 02:13:2123.70S69.77W49.4 5.1NORTHERN CHILE
United States Quakes this past week
with quakes possibly felt in U.S. from nearby countries:
04/04/28 13:16:3169.08N144.17W1.0 3.6NORTHERN ALASKA
04/04/28 11:45:1016.58S172.94W12.2 5.3SAMOA ISLANDS REGION
04/04/27 19:21:0334.06N117.26W12.7 3.0GREATER LOS ANGELES AREA, CA.
04/04/27 18:47:5751.39N176.40W45.0 4.7ANDREANOF ISLANDS, ALEUTIAN IS.
04/04/27 09:40:0549.06N128.53W10.0 4.1VANCOUVER ISLAND, CANADA REGION
04/04/27 07:12:0738.05N118.81W7.7 3.7CENTRAL CALIFORNIA
04/04/26 19:13:5937.72N121.82W18.9 3.3SAN FRANCISCO BAY AREA, CALIF.
04/04/26 05:58:0935.56N121.18W0.3 3.4OFFSHORE CENTRAL CALIFORNIA
04/04/25 11:11:3312.53N143.84E10.0 4.8GUAM REGION
04/04/24 18:45:1721.71N142.94E298.6 4.7MARIANA ISLANDS REGION
04/04/23 22:23:3113.61N144.56E125.4 4.7GUAM REGION
04/04/23 05:25:1638.30N112.25W3.0 2.8UTAH
04/04/23 04:47:1961.43N149.88W41.0 3.8SOUTHERN ALASKA
04/04/22 16:13:0234.80N97.68W5.0 2.9OKLAHOMA
04/04/22 12:46:4933.18N115.60W1.0 2.9SOUTHERN CALIFORNIA
SUNSunspot numbers for the past week :
4/21 22 23 24 25 26 27 28
98 90 63 64 45 47 28 32
Planetary geomagnetic A Indices for same period
5 4 20 11 12 7 5 8
Solar data from
http://www.sec.noaa.gov/
Comments or questions are welcome.
Donald J. Boon, editor
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