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Archive for the ‘Chile Ridge’ Category

Puyehue Volcanic Range Continues Ejecting Ash

Posted by feww on June 7, 2011

Puyehue continues to spew ash as volcanic seismicity re-intensifies: Reports

Chilean officials expand the evacuation zone around a volcanic complex as it continues to eject thousands of tons of ash each hour.

The national emergencies office (ONEMI) fears that volcanic ash and pumice could clog up rivers and waterways causing flooding, or trigger lahars, as rain hits the area.

The rain is expected to continue for at least several days.

“The forecast is for more rain on Tuesday, Wednesday and Thursday,” an ONEMI official told a local news agency.

Frame grab from a video clip taken June 6, 2011. Click HERE for the video link.

War of the Volcanoes: Golf-ball size pumice ejected in the eruption have landed as far away as 25 km from the volcano. Photo credit: Reuters/via BBC. More images …

Click animation link to view the transport of the plume from 1:45 pm local time June 4, 2011, until 10:45 am June 6, 2011.

Buenos Aires, Argentina – Volcanic Ash Advisories

  • VA ADVISORY DTG: 20110607/1330Z
  • PSN: S4052 W07220
  • SUMMIT ELEV: 1798M
  • ADVISORY NR: 2011/014
  • DATE/TIME: 07/1230Z OBS
  • ASH CLOUD: SFC/FL180 VA CLD 35 NM WIDE LINE BTN S4052 W06630 – S4127 W07053 – S4200 W06956 – S4318 W06907 – S4432 W06905 FCST ASH CLD +06HR: 071930Z SFC/FL180 S4052 W07220 – S4130 W0550 – S4200 W06140 – S4400 W06130 – S4230 W06640 – S4052 W07220 FCST ASH CLD +12HR: 080130Z SFC/FL180 S4052 W07220 – S4100 W06700 – S4130 W063500 – S4230 W05800 – S4600 W05800 – S4310 W06454 – S4133 W06930 – S4052 W07220 FCST ASH CLD +18HR: 080730Z SFC/FL180 S4052 W07220 – S4000 W06700 – S4000 W06300 – S4300 W05400 – S4500 W05800 – S4200 W06400 – S4052 W07 220
  • REMARKS: VA PLUME IS VISIBLE IN MULTISPECTRAL SATELLITE IMAGERY AREA OF REMANENT VA ASH FROM PREVIOUS EMISION BTN FL160/230 AT S2555 W05636 – S2715 W05545 – S3028 W05628 – S3442 W05423 – S3750 W05000 – S3450 W05555 – S3021 W05746 – S2623 W05744 – S2555 W05636 MOV ESE 50K T NEXT ADVISORY: WILL BE ISSUED BY 20110607/1930Z

Related Links

FIRE-EARTH Volcano Watch

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Magnitude 6.1 quake strikes southern Peru

Posted by feww on July 12, 2009

A strong magnitude 6.1 earthquake struck southern Peru Sunday

U.S. Geological Survey reported a  magnitude 6.1 earthquake in southern Peru early Sunday. The quake epicenter was located about 60 km NNW of Juliaca, Peru, some 785 km  ESE of the capital city of  Lima.

There were no immediate reports of structural damage or injuries caused by the quake, which struck at a depth of about 200km.

10-degree Map Centered at 15°S,70°W

peru - us2009izaj
Earthquake Location. Source: USGS

Earthquake Details:

  • Magnitude: 6.1
  • Date-Time:
    • Sunday, July 12, 2009 at 06:12:47 UTC
    • Sunday, July 12, 2009 at 01:12:47 AM at epicenter
  • Location: 14.990°S, 70.421°W
  • Depth:  201.6 km (125.3 miles) set by location program
  • Region:  SOUTHERN PERU
  • Distances:
    • 60 km (40 miles) NNW of Juliaca, Peru
    • 200 km (125 miles) NE of Arequipa, Peru
    • 230 km (145 miles) SE of Cuzco, Peru
    • 785 km (485 miles) ESE of LIMA, Peru
  • Location Uncertainty:  horizontal +/- 7.4 km (4.6 miles); depth fixed by location program
  • Parameters NST=263, Nph=263, Dmin=284.6 km, Rmss=1.19 sec, Gp= 29°, M-type=teleseismic moment magnitude (Mw), Version=8
  • Source: USGS NEIC (WDCS-D)
  • Event ID:  us2009izaj

Other Maps:

Historic Seismicity  (mag 7 and 8+ since 1900)


Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green

Seismic Hazard Map

Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green

Related Links:

    Posted in Chile Ridge, Nazca Plate, Pacific Ring of Fire, peru-chile trench, Subduction Zones | Tagged: , , , , | 1 Comment »