EARTH AND SUN DIGEST 2005/04/21 Seige by Volcano Over?

EARTH AND SUN DIGEST 2005/04/21 Seige by Volcano Over?

Posted by Canie on April 22, 2005 at 08:30:52:

The Past Week Ticker
M11/6.7M,6.8M,6.1M, T12/GS30, W13/V9.1, Th14, F15, Sa16/6.4M, Su17, M18, T19, W20, Th21
MTWThFSaSu-days of week; 6M-quake, V8-volcano, MC or XC-solar flare, GS30-geomagnetic storm

Moon Phases and Orbit for April 2005 per Astronomy Magazine in EDT
1 last quarter, 4 perigee, 8 new moon, 16 first quarter, 16 apogee, 24 full moon, 29 perigee (#2)

..LYRID METEOR SHOWER peaks on 22 April.
..LUNAR ECLIPSE 24 April.

..GRAPH of current sunspot cycle see
http://spaceweather.com/swpod2005/30mar05/ssn_predict_l.gif

EARTH AND SUN DIGEST for April 21, 2005
Seige by Volcano Over?
...Week at a Glance (with time ticking)

Counts thru Wednesday
18-- Global Earthquakes of 5.0 to 5.9M (Japan-2, SoPacific-4)
1-- Global quakes of 6M or greater: 4/16 6.4M NIAS REGION, INDONESIA

342-- California and Nevada earthquakes in past week
2-- CA/NV earthquakes 4M or greater: 4/21 4.1M CHANNEL ISLANDS REG., CALIFORNIA, 4/16 4.7M CENTRAL CALIFORNIA
Interactive map
Earthquake data
0--Volcanoes with ash near Jet Stream (at 5 mi/8 km): none
http://Ash data

63--Sunspot No. high/low: 63 on 4/14 to 39 on 4/20
290--Largest/smallest daily area of sunspots: 290 on 4/14 to 130 on 4/20
0--X-Class Solar Flares
0--M-Class flares
(from www.sel.noaa.gov/today.html )

21--Planetary Geomagnetic A Index (high): 21 on 4/20
0 days--Kp's of 4 (or more) per 24 hours (at least five): 6 on 4/12, 7 on 4/13
2 days--Kp's of 3 per 24 hours this week (high): 3 on 4/14, 15

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  05
March     0   2   8  13   5   7   8   5   5  10  15  10  18
April     0  12  17   4   9   6   8   3   9   7   8  17 (15)YR total 19 110 160 109  76  63 103 109 112 133 145 145 (76)

(Data is upgraded at the source as needed without notice.)

Northern Ash and Gas Eruptions north of latitude 23°N,
(highest plume)

ASO Kyushu, Japan 32.88°N, 131.10°E; summit elev. 1,592 m (1.8 km)
a small explosion on 14 April with a plume of "white smoke" to ~1.8 km; the explosion after hundreds of small earthquakes during the previous 2 weeks

CHIKURACHKI Kurile Islands, Russia 50.325°N, 155.458°E; summit elev. 1,816 m (?2.3 km)
on 7 April an ash-and-gas plume rising to ~2.3 km and extending ~10 km S

KARYMSKY Kamchatka Peninsula, Russia 54.05°N, 159.43°E; summit elev. 1,536 m (?2.5 km)
activity above background levels during 8-15 April, possible ash-and-gas explosions reaching 2.5 km during 12-13 April, ash-and-gas plumes extending ~30 km on 8 and 9 April, ash deposits extending ~10 km on the S side of the volcano

KLIUCHEVSKOI Kamchatka Peninsula, Russia 56.06°N, 160.64°E; summit elev. 4,835 m (low)
activity decreasing during 8-15 April, but above background levels, gas-and-steam plumes to low levels

SHIVELUCH Kamchatka Peninsula, Russia 56.653°N, 161.360°E; summit elev. 3,283 m (2.9 km)
gas-and-steam plumes to ~2.9 km on 8 April, and one extending ~50 km SW on the 14th

ST. HELENS Washington, USA 46.20°N, 122.18°W; summit elev. 2,549 m (2.5 km)
during 13-19 April growth of the new lava dome inside the crater continuing, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash, displacement of the old lava dome slowing for several days around 18 April, but should not be taken to mean that the eruption was ending

VILLARRICA central Chile 39.42°S, 71.93°W; summit elev. 2,847 m (2.9 km)
unusual seismicity during early April, fresh ash deposits seen outside of the volcano's crater

Equatorial Ash and Gas Eruptions at less than 23°N or S

CANLAON Philippines 10.41°N, 123.13°E; summit elev. 2,435 m (4.4 km)
during 13-14 April mild ash emissions producing plumes to a height of ~3.1 km; during 15-17 April moderate-to-strong emissions producing ash plumes to ~4.4 km and depositing ash 16 km SW of the crater

COLIMA Western México 19.514°N, 103.62°W; summit elev. ~3,850 m (6.7 km)
during 13-18 April several explosions, resultant ash plumes rising to a maximum height of ~6.7 km

KILAUEA Hawaii, USA 19.43°N, 155.29°W; summit elev. 1,222 m (0)
during 14-19 April surface lava flows visible on the Pulama pali fault scarp and lava NOT seen entering the ocean

KARTHALA Comoros Islands, Indian Ocean 11.75°N, 43.38°E; summit elev. 2,361 m (?)
on 17 April heightened seismicity, and gas and ash emissions, lava confined to the bottom of the summit crater; activity subsiding around 19 April with ash emissions ceasing

KRAKATAU Indonesia 6.10°S, 105.43°E; summit elev. 813 m (0)
volcano at a normal level of activity

NAFANUA Samoa 15°S, 169°W; Summit Elev. 600 m below sea level
Vailulu'u the most active Samoan volcano in eruption between April 2001 and April 2005 forming a 293 m tall pillow volcano, named Nafanua, after the Samoan Goddess of War; location in the originally 1000m deep western crater of Vailulu'u still showing substantial seismic activity with epicenters beneath Nafanua, with about four local earthquakes per day, interpreted as pre-eruption seismic activity

POPOCATÉPETL México 19.02°N, 98.62°W; summit elev. 5,426 m (low)
on 19 April light gas emission and incandescence visible

SOPUTAN Sulawesi, Indonesia 01.07°N, E124.43°E; Summit Elev. 1784 m (4.2 km)
ash eruption on 19 April at 2230 to 4.2 km

TALANG Sumatra, Indonesia 00.98°S, 100.68°E; summit elev. 2,896 m (0)
eruption beginning on 12 April at end on 14 April

TANGKUBANPARAHU western Java, Indonesia 6.77°S, 107.60°E; summit elev. 2,084 m (2 km)
"white thin smoke" emitted from Upas Baru crater and Ratu crater on 14 April, and from Upas Baru crater on 15 April, on 19 April the Alert Level reduced

TUNGURAHUA Ecuador 1.47°S, 78.44°W; summit elev. 5,023 m (low)
during 14-17 April volcanic activity at relatively low levels, low-energy gas-and-steam plumes emitted; on 19 April at 0157 a moderate explosion with incandescent volcanic blocks rolling down the volcano's flanks, ash falling S of the city of Ambato

All ash elevations are in km above sea level (a.s.l.) and times are converted to UTC.

EARTH


FIVE Index of Global earthquakes of 5.0 magnitude or greaterDATE-(UTC)-TIME    LAT  LON    DEP   MAG  Q  COMMENTS  Day's Kp values 
yy/mm/dd hh:mm:ss  deg. deg.   km 
READ UP for latest report.  
Sans Sumatra:	5M quakes -  10 
05/04/21  09:26:0051.30N178.47W42.7  5.4ANDREANOF ISLANDS, ALEUTIAN IS., ALASKA
05/04/21  03:39:235.00N76.21W99.4    5.1COLOMBIA
05/04/21  01:15:0952.24S13.69E10.0   5.0SOUTHWEST OF AFRICA
--end of week of record
05/04/20  10:40:4717.52S71.19W29.5   5.2NEAR COAST OF SOUTHERN PERU
05/04/19  21:11:2733.67N130.18E12.5  5.3KYUSHU, JAPAN
05/04/19  01:46:5629.61N138.94E419.6 5.9IZU ISLANDS, JAPAN REGION
05/04/19  00:31:4213.93N120.77E171.5 5.0MINDORO, PHILIPPINES
05/04/17  17:43:345.57S151.45E59.3   5.0NEW BRITAIN REGION, P.N.G.
05/04/16  22:41:1617.38S69.46W117.3  5.6LA PAZ, BOLIVIA
05/04/16  07:49:3115.28S172.55W10.0  5.3SAMOA ISLANDS REGION
05/04/15  18:32:1523.62S175.05W45.7  5.2TONGA REGION
05/04/15  04:17:556.07S104.78E64.2   5.4SUNDA STRAIT, INDONESIA
05/04/14  22:09:3022.26S171.46E123.7 5.7SOUTHEAST OF LOYALTY ISLANDS

Indonesian Quakes, by region with top to north, latest quake on top
Myanmar-India
Andaman Islands  5M quake -  1
05/04/17  21:37:5210.16N93.63E16.9   5.2ANDAMAN ISLANDS, INDIA REGION
Simeulue Island	 5M quakes - 1 
05/04/19  15:10:162.38N96.29E41.4    5.1SIMEULUE, INDONESIA
Nias Island	 5M quakes - 1;  6M quakes - 1
05/04/17  13:43:550.37N97.65E24.9    5.5NIAS REGION, INDONESIA
05/04/16  16:38:061.90N97.64E43.1    6.4NIAS REGION, INDONESIA
            
Mentawi Region	 5M quakes - 5
05/04/17  21:23:521.61S99.60E30.6    5.4KEPULAUAN MENTAWAI REGION, INDONESIA
05/04/17  21:23:511.61S99.56E21.0    5.7KEP. MENTAWAI REGION, INDONESIA
05/04/17  20:28:531.61S99.58E40.5    5.1KEPULAUAN MENTAWAI REGION, INDONESIA
05/04/16  08:43:081.75S99.93E33.9    5.4KEPULAUAN MENTAWAI REGION, INDONESIA
05/04/14  11:29:521.88S99.93E33.7    5.8KEP. MENTAWAI REGION, INDONESIA

United States And U.S. Territorial Quakes this past week 
with quakes possibly felt from nearby countries:  
05/04/21  09:26:0051.30N178.47W42.7  5.4ANDREANOF ISLANDS, ALEUTIAN IS., ALASKA
05/04/21  06:36:1533.46N120.20W5.0   4.1CHANNEL ISLANDS REG., CALIFORNIA
05/04/20  22:40:4834.90N119.08W7.2   3.6CENTRAL CALIFORNIA
05/04/20  08:51:0632.31N115.31W6.0   2.9BAJA CALIFORNIA, MEXICO
05/04/20  06:48:2032.74N117.59W6.0   3.0CHANNEL ISLANDS REGION, CALIFORNIA
05/04/19  18:17:5931.52N115.55W6.0   4.3BAJA CALIFORNIA, MEXICO
05/04/19  14:32:2638.83N122.76W2.4   2.8NORTHERN CALIFORNIA
05/04/17  21:33:0160.77N149.32W26.0  4.6KENAI PENINSULA, ALASKA
05/04/16  21:40:0721.93N143.02E300.3 4.0MARIANA ISLANDS REGION
05/04/16  21:29:0638.22N117.87W6.2   3.5NEVADA
05/04/16  19:18:1335.03N119.18W10.8  4.7CENTRAL CALIFORNIA
05/04/16  10:13:1535.89N120.43W8.5   3.4CENTRAL CALIFORNIA
05/04/16  09:04:3534.85N119.22W8.5   3.1CENTRAL CALIFORNIA
05/04/16  07:49:3115.26S172.55W10.0  5.3SAMOA ISLANDS REGION
05/04/16  07:33:3861.44N151.67W80.0  4.1SOUTHERN ALASKA
05/04/14  23:33:2642.98N128.35W10.0  3.2OFF THE COAST OF OREGON
05/04/14  15:38:1635.47N84.09W15.2   2.8EASTERN TENNESSEE

SUN
Sunspot numbers, daily for the past week:
4/13  14  15  16  17  18  19  20       
  45  63  61  52  54  44  43  39    
Planetary daily geomagnetic A Index/with prior consecutive 3 hr Kp's 4/13    26/  2 4 4 4 5 5 4 4
4/14    19/  4 5 3 3 3 2 3 2
4/15    13/  3 4 2 2 3 3 2 3
4/16     7/  3 2 1 1 2 2 2 2
4/17     5/  1 2 2 1 1 1 1 1
4/18     8/  1 3 2 1 2 2 2 2
4/19     8/  2 2 4 1 2 2 2 2
4/20    21/  2 5 4 4 4 3 2 2

Solar data from http://www.sec.noaa.gov/

SPECIAL NOTE

Seige by Volcano Over?

Not only are the week's quakes of lower magnitude, but Kilauea has lost its hot lava fingers entering the sea, Talang volcano stopped erupting, others are under less high an alert, and even on Mount St. Helens things are moving more slowly. The recent volcanism continues with Anatahan and Colima, and the the new Samoan seamount probably belongs to that time. A couple of weeks around the next perigee should clarify whether this is just a pause or starts the quieting before the solar minimum.

Comments or questions are welcome.

Donald