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| EARTH AND SUN DIGEST 2005/02/03 Manam Volcano, Nicobar Quakes, Antarctic Ice |
The Past Week Ticker YEAR: 93 94 95 96 97 98 99 00 01 02 03 04 05 Global Earthquakes of 5.0 to 5.9M thru Wednesday--76 (Japan-1, SoPacific-5); four quakes of 6M or greater: 2/02 6.2M ROTA REGION, NORTHERN MARIANA ISLANDS, 1/28 6.2M OFF THE COAST OF ECUADOR, 1/28 6.1M OFF THE COAST OF ECUADOR, 1/26 6.2M OFF THE WEST COAST OF NORTHERN SUMATRA (last not previously listed). California and Nevada earthquakes in past week--285; one quake 4M or greater: 1/28 4.0M CENTRAL CALIFORNIA Interactive map Earthquake data . Volcanic ash near Jet Stream (at 5 mi/8 km)--Papua New Guinea http://Ash data Sunspot No. high and low--49 on 31 January to 27 on 1 February Largest and smallest daily area of sunspots--180 on 31 January from 120 on 30 January January (100=Earth-size) X-Class Solar Flares: none; last M-Class flares (5+/day): six on 15 January (See updating site at www.sel.noaa.gov/today.html ) Planetary Geomagnetic A Indices: high of 20 on 29 January; five or more Kp's of 4 (or more) per 24 hours: none; high no. of Kp's of 3 per 24 hours this week: four on 29 January[/b] (Data is upgraded at the source as needed without notice.) Northern Ash and Gas Eruptions north of latitude 23°N. EBEKO Kuril Islands, Russia 50.68°N, 156.02°E; summit elev. 1,156 m (1.6 km) on 27 and 28 January a strong sulfur scent detected ~7 km from Ebeko, on the 27th a gas-and-steam plume ~1.6 km, during 28-29 January, a plume to ~1.5 km above the vent on the on the NE side of the volcano's active crater KLIUCHEVSKOI Kamchatka Peninsula, Russia 56.06°N, 160.64°E; summit elev. 4,835 m (5.3 km) Strombolian activity during 20-23 and 27 January and explosions with volcanic bombs 50-300 m above the crater on several nights, gas-and-steam plumes to a maximum height of 5.3 km, on 21 January a gas-and-steam plume with small amounts of ash extending as far as 23 km NE of the volcano ST. HELENS Washington, USA 46.20°N, 122.18°W; summit elev. 2,549 m (2.6 km) during 26 January to 1 February growth of the new lava dome continuinged, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash, GPS receiver located on new lava-dome rock continuing its steady ESE progression, GPS receivers on the 1980-86 lava dome continuing their trifling northward travel VENIAMINOF Alaska Peninsula, USA 56.17°N, 159.38°W; summit elev. 2,507 m (3 km) during 21-28 January, seismic data, web camera views, and satellite images all indicating low-level ash emissions continuing, during periods of clear weather satellite imagery showing anomalous heat at the summit cone, consistent with hot blocks and ash ejected from the active vent, the web camera showing intermittent ash plumes as high as 3 km 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 (3 km) as of 30 January erupting with Strombolian explosions about every minute, similar to the previous few weeks, reaching a high on 26 January, about 20% above previous high levels for the year; after midday on the 27th the explosions larger but less frequent, ash to ~3 km with satellite imagery showing a plume of ash and vog (fog composed of volcanic gases) trailing 65-90 km downwind, on 30 January seismicity levels about 15% below the peak values of January 26 COLIMA western México 19.514°N,103.62°W; summit elev. ~3,850 m (6.4 km) during 26-31 January several small ash explosions producing plumes, the highest rising ash plume to ~6.4 km ERTA ALE Ethiopia; 13.60°N, 40.67°E; summit elev. 613 m (0.6 km) during 22-23 January observation of no significant changes since last observed in November 2004, with degassing decreased slightly and one hornito containing glowing molten lava GALERAS Colombia 1.22°N, 77.37°W; summit elev. 4,276 m (5.1 km) during 25-31 January, low-level relatively shallow seismicity, on 30 January an emission of gas and ash to ~5.1 km KILAUEA Hawaii, USA 19.43°N, 155.29°W; summit elev. 1,222 m (0) during 26-29 January surface lava visible at various spots along the PKK lava flow, all of the vents in the crater of Pu`u `O`o visible at times MANAM offshore New Guinea, Papua New Guinea 4.10°S, 145.06°E; summit elev. 1,807 m (24 km) an eruption during the evening of 27 January more severe than other eruptions during the current eruptive period and debris from the eruption voluminous and widespread on the island with monitoring base completely destroyed by a possible pyroclastic flow, the eruption around 1400 on 27 January to 21-24 km, the volcanic cloud very difficult to track because ice rich and mixed with monsoonal storms, but per dispersion models and satellite imagery a mid-tropospheric portion of the cloud spreading quickly W over Irian Jaya, with a higher portion of the cloud remaining near the eruption site; another large eruption around 1300 on 28 January RABAUL New Britain Island, Papua New Guinea 4.271°S, 152.203°E; summit elev. 688 m (1.7 km) on 31 January ash to a height of ~1.7 km, ash not visible on satellite imagery TUNGURAHUA Ecuador 1.47°S, 78.44°W; summit elev. 5,023 m (5.1 km) ash emission on the evening of 25 January with a deposit of a small amount of ash in the sector of Puala, the character of the eruption since 30 January to low-energy emissions of predominately steam, continuing through 31 January 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 Solar data from http://www.sec.noaa.gov/ SPECIAL NOTES Helioseismic Holography, Sunspot 720, And The Other Bigger One This technique, described at http://spaceweather.com/glossary/farside.html , allows us to see sunspots on the far side of the Sun. A much larger, previously unknown group than Sunspot 720 (which unleased an X7-Class solar flare), appears to be forming, still on the far side. The picture by this technique is displayed at www.spaceweather.com . Giant Iceberg in Antarctica Runs Aground Thanks to Phylis on Yahoo's Pinpoint and Earthwaves That monster (2500 sq km) iceberg near McMurdo Sound on 20 January apparently grounded 3 km from a projected collision with an icy point. http://edition.cnn.com/2005/TECH/science/01/20/iceberg.collision.ap/ Comments or questions are welcome. Donald J. Boon, editor. |
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