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Hypoxia pp 225-236 | Cite as

Mountaineering in thin air

Patterns of death and of weather at high altitude
  • Raymond B. Huey
  • Xavier Eguskitza
  • Michael Dillon
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 502)

Abstract

An 8000-m peak bring challenges of extremes of hypoxia and weather as well as the normal hazards of climbing itself. These challenges have taken a severe toll: 604 mountaineers have died on those great peaks since 1950. Little is known about whether mountain height, use of supplemental oxygen, or team size might influence rates of death or of success. However, such information may provide insights not only to our understanding of the limits of human performance, but also to mountaineers in making decisions on these peaks. We present several examples from a research program that is attempting to analyze factors that potentially influence success or death rates on the 8K peaks. (1) Apparent risk of death in the notorious Khumbu Icefall on Mt. Everest has declined dramatically in recent years. This decline could reflect improved route finding and technique, but might also reflect climate warming, which has caused the Khumbu glacier to shrink and slow in recent decades. (2) Risk of death during descent from an 8000-m peak increases with the height of the peak. (3) Risk of death during descent from the summit of Everest or of K2 is elevated for climbers not using supplemental oxygen. (4) We outline some new studies that are exploring how convective heat loss, which influences wind chill, changes with altitude as well as the incidence of storms: both factors will impact the probability success and death of Himalayan mountaineers.

Key words

Everest K2 supplemental oxygen wind chill convection 

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References

  1. 1.
    Bert P. La Pression Barométrique: Recherches de Physiologie Experiméntale. Paris: Mason. English translation by M. A. Hitchcock and F. A. Hitchcock, College Book Co., Columbus, Ohio (1943), 1878.Google Scholar
  2. 2.
    Bertolani L and Bollasina M. Recent biennial variability of meteorological features in the Eastern Highland Himalayas. Geophy Res Let 27: 2185–2188, 2000.CrossRefGoogle Scholar
  3. 3.
    Campbell GS. An Introduction To Environmental Biophysics. New York: Springer-Verlag, 1977.CrossRefGoogle Scholar
  4. 4.
    Eguskitza X and Huey RB. Supplemental oxygen and mountaineering deaths. Am. Alpine J. 2000: 135–138.Google Scholar
  5. 5.
    Hawley RJ. Review of: Into Thin Air: A Personal Acount of the Mount Everest Disaster, by Jon Krakauer. New York, NY; Villard; 1997. JAMA 281: 1341, 1999.CrossRefGoogle Scholar
  6. 6.
    Huey RB. The economics of adventure: on the high cost of Himalayan climbing permits. Alpine J. in press, 2001.Google Scholar
  7. 7.
    Huey RB and Eguskitza X. Supplemental oxygen and death rates on Everest and K2. JAMA 284: 181,2000.PubMedCrossRefGoogle Scholar
  8. 8.
    Huey RB and Eguskitza X. Limits to human performance: elevated risks on big mountains. J. Exp. Biol in press, 2001.Google Scholar
  9. 9.
    Krakauer J. Into Thin Air: A Personal Account of the Mount Everest Disaster. New York: Villard, 1997.Google Scholar
  10. 10.
    Messner R. Everest: Expedition to the Ultimate. London: Kay & Ward, 1979.Google Scholar
  11. 11.
    Mongtomery HE, Marshall R, Hemingway H, Myerson S, Clarkson P, Dollery C, Hayward M, Holliman DE, Jubb M, World M, Thomas EL, Brynes AE, Saeed N, Barnard M, Bell JD, Prasad K, Rayson M, Talmud PJ and Humphries SE. Human gene for physical performance. Nature 393: 221, 1998.CrossRefGoogle Scholar
  12. 12.
    Monteith JL and Unsworth MH. Principles Of Environmental Physics. New York: E. Arnold, 1990.Google Scholar
  13. 13.
    Nakawo M, Yabuki H and Sakai A. Characteristics of Khumbu Glacier, Nepal Himalaya: recent change in the debris-covered area. Ann Glaciol 28: 118–122, 1999.CrossRefGoogle Scholar
  14. 14.
    Öelz O, Howald H, diPrampero PE, Hoppeler H, Claassen H, Jenni R, Buhlmann A, Ferretti G, Bruckner J-C, Veicsteinas A, Gussoni M and Cerretelli P. Physiological profile of world-class high-altitude climbers. J Appl Physiol 60: 1734–1742, 1986.PubMedGoogle Scholar
  15. 15.
    Peacock AJ and Jones PL. Gas exchange at extreme altitude: results from the British 40th Anniversary Everest Expedition. Eur Respir J 10: 1439–1444, 1997.PubMedCrossRefGoogle Scholar
  16. 16.
    Peixoto JP and Oort AH. Physics Of Climate. New York, N.Y.: American Institute of Physics, 1992.Google Scholar
  17. 17.
    Pollard A and Clarke C. Deaths during mountaineering at extreme altitude. Lancet 1(8597): 1227, 1988.Google Scholar
  18. 18.
    Sanyal DC and Maji NK. Thermoregulation through skin under variable atmospheric and physiological conditions. J Theor Biol 208: 451–456, 2001.PubMedCrossRefGoogle Scholar
  19. 19.
    Seko K, Yabuki H, Nakawo M, Sakai A, Kadota T and Yamada Y. Changing surface features of Khumbu Glacier, Nepal Himalayas revealed by SPOT images. Bull Glacier Res 16: 33–41, 1998.Google Scholar
  20. 20.
    Shlim DR. To the Editor: “Into Thin Air: Deaths on Everest”. JAMA 282: 2212, 1999.PubMedCrossRefGoogle Scholar
  21. 21.
    Shrestha AB, Wake CP, Mayewski PA and Dibb JE. Maximum temperature trends in the Himalaya and its vicinity: an analysis based on temperature records from Nepal for the period 1971–94. J Climate 12: 2775–2786, 1999.CrossRefGoogle Scholar
  22. 22.
    Steadman RG. The assessment of sultriness. Part II: Effects of wind, extra radiation and barometric pressure on apparent temperature. J Appl Meteorol 18: 874–885, 1979.CrossRefGoogle Scholar
  23. 23.
    Stravisi F, Verza GP and Tartan G. Meteorology and climatology at high altitude in Himalaya. In: Top of the World Environmental Research: Mount Everest — Himalayan Ecosystem, edited by Baudo R, Tartari G and Munawar M. Leiden, The Netherlands: Backhuys, 1988, p. 101–122.Google Scholar
  24. 24.
    Susser M. What is a cause and how do we know one? A grammar for pragmatic epidemiology. Am J Epidemiol 133: 635–648, 1991.PubMedGoogle Scholar
  25. 25.
    Tiiman HW. Mount Everest 1938. Cambridge: Cambridge U. Press, 1948.Google Scholar
  26. 26.
    Unsworth W. Everest. Oxford: Oxford Illustrated Press, 1989.Google Scholar
  27. 27.
    Weed DL. On the logic of causal inference. Am J Epidemiol 123: 965–979, 1986.PubMedGoogle Scholar
  28. 28.
    West JB. Human physiology at extreme altitudes on Mount Everest. Science 223: 784–488, 1984.PubMedCrossRefGoogle Scholar
  29. 29.
    West JB. Barometric pressures on Mt. Everest: new data and physiological significance. J Appl Physiol 86: 1062–1066, 1999.PubMedCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2001

Authors and Affiliations

  • Raymond B. Huey
    • 1
  • Xavier Eguskitza
    • 2
  • Michael Dillon
    • 1
  1. 1.Department of ZoologyUniversity of WashingtonSeattleUSA
  2. 2.WorcesterUK

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