NASA: USA - Kilauea Lava Flows Encroach on Ohia Lehua Forest - 09.12.13
Posted by Ricardo Marcenaro | Posted in NASA: USA - Kilauea Lava Flows Encroach on Ohia Lehua Forest - 09.12.13 | Posted on 13:45
acquired August 9, 2013
download large image (578 KB, JPEG, 1218x1218)
acquired August 9, 2013
download large natural-color image (3 MB, JPEG, 3654x3654)
acquired September 7, 2013
download large image (714 KB, JPEG, 1218x1218)
acquired September 7, 2013
download large natural-color image (3 MB, JPEG, 3654x3654)
Current activity at Hawaii’s Kilauea Volcano is concentrated on the Kahauale’a 2 lava flow. The flow is encroaching on ohia lehua forest
that is anywhere from 200 to 750 years old (the underlying prehistoric
lava flows are not precisely dated). Despite being less than a kilometer
(3,300 feet) from Pu’u ’O’o—the center of the eruption since 1983—the
forest had escaped unscathed until now. The majority of the lava from
Pu’u ’O’o has flowed south towards the ocean (like the Peace Day lava
flow, which is currently active), rather than north into the interior of
Hawaii.
This pair of satellite images shows the lava flows in false-color
(combining shortwave infrared, near infrared, and green light) on August
9, 2013 (top), and September 7, 2013 (lower). The hot surface of the
flows radiate shortwave infrared light, which appears red in the images.
Green indicates vegetation. Rocky lava flows (up to 50 years old, too
young for significant regrowth of vegetation) are black. Clouds are
white or bright blue-green.
References
- Trusdell, F. A., et al. (2006, March 9) Digital Database of the Geologic Map of the Island of Hawai’i. Accessed September 9, 2013.
- Hawaiian Volcano Observatory (2013, September 8) Recent Kilauea Status Reports, Updates, and Information Releases. Accessed September 9, 2013.
NASA Earth Observatory image by Jesse Allen and Robert Simmon, using EO-1 ALI data from the NASA EO-1 team. Caption by Robert Simmon.
- Instrument:
- EO-1 - ALI
NASA: USA - Kilauea Lava Flows Encroach on Ohia Lehua Forest - 09.12.13
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