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Earth and Sun Digest 2004/07/29 ANOTHER MAGNETIC WEEK
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Posted by Canie on July 30, 2004 at 09:24:10:
The Past Week Ticker
M19/6.4M, T20, W21, Th22/MC(3),6.2M, F23/MC(2),GS47, Sa24/MC(2), Su25/MC(4),GS122,7.2M, M26/MC(3),GS31, T27/MC(2),GS162, W28/MC,6.6M, Th29
MTWThFSaSu-days of week; 6M-quake, V8-volcano, MC or XC-solar flare, GS-geomagnetic storm
Moon for August 2004 per Astronomy Magazine in EDT
7 last quarter, 11 apogee, 15 new moon, 23 first quarter, 27 perigee, 29 full moon
The July Moon has its second perigee (223,895 miles near) on 30 July.
The full moon, the second of July, is thus a http://science.nasa.gov/headlines/y2004/07jul_bluemoon.htm Blue Moon.
X and M-CLASS FLARES! See the latest strength on the graph at http://www.sel.noaa.gov/today.html .
Perseid Meteor Shower peaks on 12 August.
Earth and Sun Digest for July 29, 2004
ANOTHER MAGNETIC WEEK
...Week at a Glance (with time ticking)
California and Nevada earthquakes in past week--330; one quake of 4M or greater: 7/24 4.0M SOUTHERN CALIFORNIA
Compare with map at
http://quake.wr.usgs.gov/recenteqs/latest.htm and past week count at left lower corner
Global Earthquakes of 5.0 to 5.9M thru Wednesday--11 (Jap-2, SoPac-6); three 6M quakes or greater: 7/28 6.6M NEAR N COAST OF PAPUA, INDONESIA, 7/25 7.2M SOUTHERN SUMATRA, INDONESIA, 7/22 6.4M RYUKYU ISLANDS, JAPAN (last previously reported)
Earthquake data are from U.S. Geological Survey tables at http://neic.usgs.gov/neis/bulletin/bulletin.html .
Volcanic ash near Jet Stream (at 5 mi/8 km)--none
Ash data are from the weekly GVN/USGS report at
http://www.volcano.si.edu/reports/usgs/ Check dates.
Sunspot No. high and low--130 on 25 July to 66 on 27 and 28 July
Largest and smallest daily total area of sunspots--2070 on 22 to 960 on 28 July (100 =Size of Earth)
X-Class Solar Flares: none]; last M-Class flares (5+/day) 5 on 13 July (Ticker has fewer MC.)
(See http://www.sel.noaa.gov/today.html )
Planetary Geomagnetic A Indices: high of 162 on 27 July; five or more Kp's of 4 (or more) per 24 hours: 22 thru 27 July; high no. of Kp's of 3 per 24 hours this week: seven on 28 July
Asteroid Nearest Earth in 2004: 2004 FH on 18 March by 0.125 LD
(Data is upgraded at the source as needed without notice.)
Recent Volcanic Eruptions: TWO GROUPINGS
Northern Ash and Gas Eruptions
north of latitude 23°N.
SPURR Southwestern Alaska, USA 61.299°N, 152.251°W; 3374 m
on 26 July after an increase in seismicity no indications an eruption imminent
VENIAMINOF Alaska Peninsula, USA 56.17°N, 159.38°W; summit elev. 2,507 m
small steam-and-ash emissions during 16-23 July, on 22 July at 2129 a witnessed small ash burst rising a few hundred meters as during the previous 3 months, during periods of repose in the report week variable amounts of white steam from at least two separate craters
Equatorial Ash and Gas Eruptions
at less than 23°N or S
ANATAHAN Mariana Islands, central Pacific Ocean 16.35°N, 145.67°E; summit elev. 788 m
seismicity approaching the highest levels of the year on 23 July, Strombolian explosions frequently throwing mostly coarse material up to hundreds of meters at intervals of tens of seconds to minutes, on 26 July nearly continuous ash-and-gas emissions, by 27 July seismicity to very low levels
EGON Lesser Sunda Islands, Indonesia 8.67°S, 122.45°E; 1,703 m
on 25 July at 1440 a strong sulfur scent and explosions to 1.7-3.2 km, At 0700 on 26 July nearly continuous explosions producing plumes to ~1.95 km
FUEGO Guatemala 14.47°N, 90.88°W; summit elev. 3,763 m
strong explosions on 21 July during 1230-1550 producing ash plumes to a height of ~5.8 km, ash emissions and avalanches continuing through 27 July
GALERAS Colombia 1.22°N, 77.37°W; summit elev. 4,276 m
during several days prior to 24 July emissions to ~4.9 km, ash not visible
KILAUEA Hawaii, USA 19.43°N, 155.29°W; summit elev. 1,222 m
several surface lava flows visible during 22-26 July, and all vents in the crater of Pu`u `O`o incandescent
LEWOTOLO Lesser Sunda Islands, Indonesia 8.272°S, 123.505°E; summit elev. 1,423 m
a thin plume to a height of ~1.7 km on 25 July, ash not visible
MAYON southeastern Luzon, Philippines 13.257°N, 123.685°E; summit elev. 2,462 m
during the week of 18 July emissions ash on two villages near the volcano due to water contacting hot rocks
NYIRAGONGO Democratic Republic of the Congo 1.52°S, 29.25°E; summit elev. 3,469 m
an eruption sometime before 0500 on 27 July, on satellite imagery the plume to between 3.6 and 4.9 km
SANTA MARÍA Guatemala 14.756°N 91.552°W; summit elev. 3,772 m
during 21-27 July weak-to-moderate explosions producing plumes to ~4.5 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 July, the sulfur-dioxide flux on 16 and 23 July at 170 and 400 metric tons per day respectively
TUNGURAHUA Ecuador 1.47°S, 78.44°W; summit elev. 5,023 m
during 25-26 July volcanic activity at low levels
All ash elevations are in km above sea level (a.s.l.) and times are converted to UTC.
EARTH The FIVE Index has the last column giving the eight daily Kp (three hourly) geomagnetic values in the same UTC time frame as the quake listings.FIVE Index of Global earthquakes of 5.0 magnitude or greater DATE-(UTC)-TIME LAT LON DEP MAG Q COMMENTS Daily Kp values yy/mm/dd hh:mm:ss deg. deg. km READ UP for latest report. 04/07/28 10:23:2910.26S161.14E55.7 5.7SOLOMON ISLANDS 04/07/28 09:26:430.44S132.77E10.0 5.0NEAR N COAST OF PAPUA, INDONESIA 04/07/28 04:01:590.36S133.04E10.0 5.4NEAR N COAST OF PAPUA, INDONESIA 04/07/28 03:56:280.48S133.04E13.6 6.6NEAR N COAST OF PAPUA, INDONESIA 04/07/27 01:06:522.99S147.52E30.0 5.4ADMIRALTY ISLANDS REGION, P.N.G. 04/07/26 04:41:558.48S119.75E114.3 5.1FLORES REGION, INDONESIA 04/07/25 19:48:5612.42N95.04E23.0 5.2ANDAMAN ISLANDS, INDIA REGION 04/07/25 17:28:375.18N125.24E174.7 5.1MINDANAO, PHILIPPINES 04/07/25 14:35:182.40S104.02E574.9 7.2SOUTHERN SUMATRA, INDONESIA 04/07/25 14:01:0917.38S68.46W153.8 5.0CENTRAL BOLIVIA 04/07/24 18:54:5926.55N128.72E37.1 5.7RYUKYU ISLANDS, JAPAN 04/07/23 22:17:0732.89S178.47W10.0 5.1SOUTH OF KERMADEC ISLANDS 04/07/22 09:45:1826.55N128.85E44.4 6.4RYUKYU ISLANDS, JAPAN 04/07/22 03:56:3828.62N65.30E40.2 5.1PAKISTAN United States Quakes this past week with quakes possibly felt in U.S. from nearby countries: 04/07/29 03:25:3440.41N124.45W21.7 3.0OFFSHORE NORTHERN CALIFORNIA 04/07/28 20:19:4234.14N117.44W3.6 3.8GREATER LOS ANGELES AREA, CA. 04/07/27 21:18:4156.78N153.17W20.0 3.9KODIAK ISLAND REGION, ALASKA 04/07/27 19:30:4318.82N64.27W32.5 4.0VIRGIN ISLANDS 04/07/27 11:01:1132.58N116.19W0.0 3.3BAJA CALIFORNIA, MEXICO 04/07/27 03:55:5635.72N121.06W2.3 2.9CENTRAL CALIFORNIA 04/07/27 03:38:1735.72N121.05W5.9 3.7CENTRAL CALIFORNIA 04/07/26 20:11:3038.81N122.81W4.3 3.0NORTHERN CALIFORNIA 04/07/26 08:01:2461.13N147.08W15.0 3.8SOUTHERN ALASKA 04/07/26 06:40:4647.16N123.85W14.9 3.5OLYMPIC PENINSULA, WASHINGTON 04/07/24 12:55:1934.37N119.44W1.4 4.0SOUTHERN CALIFORNIA 04/07/24 04:26:1138.81N122.81W4.9 2.9NORTHERN CALIFORNIA 04/07/23 20:06:2742.09N120.25W7.5 2.9OREGON 04/07/23 18:21:0055.02N160.42W20.0 4.6ALASKA PENINSULA 04/07/22 20:26:2742.21N120.30W5.0 4.3OREGON 04/07/22 15:01:1232.37N115.22W0.0 3.2BAJA CALIFORNIA, MEXICO 04/07/22 13:40:1042.17N120.26W5.0 3.1OREGON 04/07/22 09:16:1216.88N145.42E183.8 4.6ANATAHAN REG, N. MARIANA ISLANDS 04/07/22 06:38:1434.01N117.25W13.6 3.0GREATER LOS ANGELES AREA, CALIFORNIA 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 04 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 May 3 15 17 8 9 6 9 5 8 7 16 7 June 1 11 12 12 3 3 3 22 10 14 12 10 July 2 10 12 7 5 9 8 9 10 5 15 (11 with two 7M) YR total 19 110 160 109 76 63 103 109 112 133 145 (75) SUNSunspot numbers , daily for the past week: 7/21 22 23 24 25 26 27 28 162 117 86 109 130 113 66 66 Planetary geomagnetic A Indices, daily (eight Kp's for same period) 6 19 47 27 122 31 162 14 Solar data from size=2>http://www.sec.noaa.gov/
SPECIAL NOTE:
NASA on Magnetism
NASA has a basic site on magnetism that gives its history, experiments, graphics and X-links . It is well worth the visit:
http://www-spof.gsfc.nasa.gov/Education/Imagnet.html
Comments or questions are welcome. [b]Email version free on request (copied from here).
Donald J. Boon, editor,
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