USA: Indonesia - Deadly Pyroclastic Flow at Paluweh Volcano - 09.06.13

Posted by ricardo marcenaro | Posted in | Posted on 15:43


Deadly Pyroclastic Flow at Paluweh Volcano
acquired September 4, 2013 download large image (2 MB, JPEG, 4835x3223)
acquired September 4, 2013 download GeoTIFF file (19 MB, TIFF)
Deadly Pyroclastic Flow at Paluweh Volcano
acquired August 3, 2013 download large image (1 MB, JPEG, 4835x3223)
acquired August 3, 2013 download GeoTIFF file (14 MB, TIFF)
A fresh scar on the north side of Indonesia’s volcanic Paluweh Island indicates the unpredictability of volcanic eruptions. Since the current eruption of Paluweh (also known as Rokatenda or Palue) began in late 2012, debris and ash had mainly flowed south from the volcano’s summit. On August 10, 2013, a small eruption deposited material to the north—killing five people.
A wide swath of gray that narrows to the northwest shows the probable path of the deadly pyroclastic flow. (A pyroclastic flow is a fast-moving mix of extremely hot ash, gas, rocks, and volcanic debris.) As it descended from the 875–meter– (2870–foot–) summit of the volcano the flow narrowed as it was funneled into existing stream channels. The flow entered the ocean along the northwest coastline, extending the beach by a few meters. In the aftermath of the eruption, the government has stepped up efforts to evacuate Paluweh.
These natural-color satellite images collected by Landsat 8 show the effect of the eruption on Paluweh. The top image is from September 4, 2013, and the lower image is from August 3, shortly before the eruption. The summit was hidden by clouds on September 4, but visible on August 3. Also apparent on August 3 was a light coating of ash on vegetation on the northwest side of the island. Irregular gray patches in the deep green forests reveal villages along the shoreline and on the lower slopes of the volcano.
  1. Jakarta Globe. (August 12, 2013) Villagers Ignore Evacuation Warnings as Mount Rokatenda Erupts. Accessed September 5, 2013.
  2. Jakarta Globe. (August 24, 2013) Govt to Clear Out Palue Island Amid Volcanic Threat. Accessed September 5, 2013.
  3. Jakarta Post. (August 10, 2013) Mt. Rokatenda in NTT erupts, reportedly killing five. Accessed September 5, 2013.
  4. Smithsonian Global Volcanism Program. Paluweh. Accessed September 5, 2013.
NASA Earth Observatory images by Jesse Allen and Robert Simmon, using Landsat 8 data from the USGS Earth Explorer.
Instrument: 
Landsat 8 - OLI






USA: Indonesia - Deadly Pyroclastic Flow at Paluweh Volcano - 09.06.13





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