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).

See also[edit]

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)

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