Glacial Collapse Threatens Huaraz, Peru

A chunk of glacier is threatening to fall into an Andean lake and could cause major flooding in a Peruvian city of 60,000 residents. This high-resolution Terra ASTER image of the glacier was acquired on Nov. 5, 2001.

A chunk of glacier was threatening to fall into an Andean lake and cause major flooding in a Peruvian city of 60,000. A fissure has appeared in the glacier that feeds the Lake Palcacocha near the city of Huaraz, 270 km north of Lima. If the piece breaks off, ensuing floods would take 15 minutes to reach the city. In 1941, the lake overflowed and caused massive destruction, killing 7,000 people. The city can be seen in the left-center part of the image. Lake Palcacocha is in the upper right corner of the image at the head of a valley, below the snow and glacier cap. The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument, aboard NASA?s Terra satellite, is being tasked to obtain current images of the glacier to help monitor the situation.

<font size="-2" face="helvetica, arial, sans">Size of full-resolution image: 31.8 x 31.8 km (19.7 x 19.7 miles)
Location: 9.5 deg. South lat., 77.5 deg. West long.
Orientation: North at top
Image Data: ASTER bands 1 (green), 2 (red), and 3(near-infrared).
Original Data Resolution: 15 meter
Date Acquired: November 5, 2001</font>

Metadata

  • Sensor

    Terra/ASTER
  • Start Date

    2001-11-05
  • Event Start Date

    2003-04-03
  • NH Image ID

    10128
  • NH Event ID

    8623
  • NH Posting Date

    2003-04-03