Massive Ice Loss from the Mauna Loa Icecave, Hawaii
| Autor: | Stephen M. Smith, Andreas Pflitsch, Norbert Schorghofer, David Holmgren |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010506 paleontology
Global and Planetary Change geography geography.geographical_feature_category 010504 meteorology & atmospheric sciences Airflow Humidity Antarctic sea ice 01 natural sciences Arctic ice pack Lava tube Oceanography Ice core Cave Melt pond Ecology Evolution Behavior and Systematics Geology 0105 earth and related environmental sciences Earth-Surface Processes |
| Zdroj: | Arctic, Antarctic, and Alpine Research. 48:33-43 |
| ISSN: | 1938-4246 1523-0430 |
| Popis: | We provide the first detailed documentation of a lava tube cave with permanent ice on the Hawaiian Islands. “Mauna Loa Icecave” had been surveyed in 1978; we periodically visited the cave and monitored temperature, humidity, and ice levels from 2011 to 2014. Perennial ice still blocks the lava tube at the terminal end, but a previously present large ice floor (estimated 260 m2) has disappeared. A secondary mineral deposited on the cave walls is interpreted as the result of past sustained ice levels. Airflow measurements, scallop patterns in the ice, strong temperature and humidity variations, and ice volume fluctuations indicate ventilation of the cave, which suggests that additional ice loss could occur rapidly. The scientific potential of the ice record remains to be explored, before it is lost. |
| Databáze: | OpenAIRE |
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