Siple Dome

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Siple Dome Field Camp
SDFC's outhouse.

Siple Dome (81°40′S 148°50′W / 81.667°S 148.833°W / -81.667; -148.833Coordinates: 81°40′S 148°50′W / 81.667°S 148.833°W / -81.667; -148.833) is an ice dome approximately 100 km wide and 100 km long, located 130 km east of Siple Coast in Antarctica. Charles Bentley and Robert Thomas established a "strain rosette" on this feature to determine ice movement in 1973-74. They referred to the feature as Siple Dome because of its proximity to Siple Coast.

Siple Dome ice core[edit]

The Siple Dome [ice core] project (79.468° S 112.086° W) was conducted by the United States National Science Foundation. The deepest ice was recovered in 1999 from 974 m, with an age of 97,600 years.[1]

It best known for the poorly-explained steps in water isotopes during the deglacial, which are unique to this core and may indicate a rapid decrease in the surface elevation of the adjoining ice streams during the deglacial[2] and a record of atmospheric carbon dioxide.[3] The Chief Scientist was Kendrick Taylor.

In popular culture[edit]

  • A documentary on climate change research associated with the Siple Dome ice core was produced by Nova: Warnings from the Ice, 1998. The documentary explains how reductions in Antarctic ice mass can raise sea level.
  • Siple Dome is referenced in the song "Fall of Sipledome" by thrash metal band Testament (on their 1999 album The Gathering).

 This article incorporates public domain material from the United States Geological Survey document "Siple Dome" (content from the Geographic Names Information System).

References[edit]

  1. ^ Brook, E. J., White, J. W., Schilla, A. S., Bender, M. L., Barnett, B., Severinghaus, J. P., ... & Steig, E. J. (2005). Timing of millennial-scale climate change at Siple Dome, West Antarctica, during the last glacial period. Quaternary Science Reviews, 24(12), 1333-1343.
  2. ^ Taylor, K. C., White, J. W. C., Severinghaus, J. P., Brook, E. J., Mayewski, P. A., Alley, R. B., ... & Lamorey, G. W. (2004). Abrupt climate change around 22ka on the Siple Coast of Antarctica. Quaternary Science Reviews, 23(1), 7-15.
  3. ^ Ahn, J., Wahlen, M., Deck, B. L., Brook, E. J., Mayewski, P. A., Taylor, K. C., & White, J. W. (2004). A record of atmospheric CO2 during the last 40,000 years from the Siple Dome, Antarctica ice core. Journal of Geophysical Research: Atmospheres, 109(D13)