NASA: Lebanon. Libano. Snow. Nieve - Hawai. Volcanic Activity at Kilauea. Actividad volcanica en el Kilauea

Posted by Ricardo Marcenaro | Posted in | Posted on 16:53


Open your mind, your heart to other cultures
Abra su mente, su corazón a otras culturas
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Usted será una mejor persona
RM

Snow in Lebanon

Snow in Lebanon

Bordering the eastern Mediterranean Sea, Lebanon might call to mind sunny beaches and historic port cities like Sidon and Tyre. However, the country is also home to towering, snowy mountains and ski resorts. In fact, the name Lebanon is derived from the Semitic word lbn, which means “white” in reference to either the snow-covered mountains or limestone cliffs.
This image, taken by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite on March 17, 2011, highlights the country’s two mountain ranges, Jebel Liban and Jabal ash Sharqi. (Jebel or jabal mean “mountain” in Arabic.)
The two mountain ranges are covered in fresh snow. A few days before the image was taken, a late-winter storm coated the mountains with up to a meter of snow, said local news reports. Snow is not unusual in Lebanon, where ski resorts are open about three months of the year. In the winter of 2010-2011, ski resorts opened in mid-December and were expected to stay open through late March or early April. Like Southern California, which is at the same latitude and has a similar climate, Lebanon receives snow primarily in the high mountains, where temperatures are cooler.
The large image, which encompasses a wider area, also shows snow in the coastal mountains of Syria and Turkey.

  1. References

  2. Lyon, A. (2010, November 14). Climate change threatens Lebanon’s snow and cedars. Reuters. Accessed March 24, 2011.
  3. Online Etymology Dictionary. (2010). Lebanon. Accessed March 24, 2011.
  4. Sikimic, S. (2011, March 19). Sunny days and snowy slopes in Faraya. The Daily Star Lebanon. Accessed March 24, 2011.
NASA image courtesy Jeff Schmaltz, MODIS Rapid Response Team at NASA GSFC. Caption by Holli Riebeek.
Instrument: 
Terra - MODIS
 
 
 

Volcanic Activity at Kilauea

Volcanic Activity at Kilauea


Volcanic Activity at Kilauea

On March 5, 2011, one of the world’s most active volcanoes—Kilauea—surged with flows of fresh lava and the opening of a new fissure. The eruption touched off a forest fire that burned for much of the month and threatened one of Hawaii’s protected rainforests, according to news reports.
After many cloud-covered days, NASA’s Advanced Land Imager (ALI) on the Earth Observing-1 (EO-1) satellite captured a false-color image of the area (top) on March 18, 2011. A similar view from January 16, 2010, is provided for comparison.
In the image—which depicts mostly infrared wavelengths of light—vegetation is green, older lava flows are brown to black, and “hot” areas are red. In this case, the scorched land in the burn scar appears slightly red and brown, the still-burning forest fire appears bright red, and bare lava is black or very dark purple. In the 2010 image, bright red, active lava flows stand out within and near Pu’u ’O’o.
About 8 miles (13 kilometers) east of the volcano summit and along the rift zone between Napau Crater and Pu’u ’O’o, the Kamoamoa fissure spewed fresh lava as much as 50 meters (160 feet) into the air. Lava oozed several kilometers downhill and ceased flowing on March 9, according to the Hawaii Volcano Observatory. Just before the new fissures opened, magma withdrew beneath Pu’u ’O’o, and the inner crater collapsed 115 meters (377 feet).
As of March 22, the wildfire near Kilauea had grown to about 1,924 acres and there is “no estimated containment date,” according to Gary Wuchner of the National Park Service, in an interview with the Honolulu Star-Advertiser. The northern edge of the fire was closing in on a special ecological area within Hawaii Volcanoes National Park.
Kilauea is a shield volcano with a low angle and broad shape like the shields used by Hawaiian warriors of the past. They are usually built from the successive lava flows piling one on top of the other. The volcano’s current active period has been ongoing since 1983.

  1. References

  2. Global Volcanism Program (n.d.). Shield Volcanoes. Accessed March 23, 2011.
  3. Honolulu Star-Advertiser (2011, March 22). Big Island wild fire poses threat to environmentally sensitive area. Accessed March 23, 2011.
  4. USGS Hawaii Volcano Observatory (n.d.). Kīlauea—Perhaps the World’s Most Active Volcano. Accessed March 23, 2011.
  5. USGS Hawaii Volcano Observatory (2011, March 5). Pu’u ’O’o crater floor collapse followed by middle east rift zone eruption. Accessed March 23, 2011.
  6. USGS Hawaii Volcano Observatory (2011, March 6). Fissure on Kīlauea’s east rift zone continues to erupt. Accessed March 23, 2011.
More images of this event in Natural Hazards
NASA Earth Observatory image created by Jesse Allen and Robert Simmon, using EO-1 ALI data provided courtesy of the NASA EO-1 team. Caption by Mike Carlowicz.
Instrument: 
EO-1 - ALI



NASA: Lebanon. Libano. Snow. Nieve - Hawai. Volcanic Activity at Kilauea. Actividad volcanica en el Kilauea











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