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The Krakatoa Air-Sea Waves: an Example of Pulse Propagation in Coupled Systems

Harkrider, David and Press, Frank (1967) The Krakatoa Air-Sea Waves: an Example of Pulse Propagation in Coupled Systems. Geophysical Journal International, 13 (1-3). pp. 149-159. ISSN 0956-540X. http://resolver.caltech.edu/CaltechAUTHORS:20150930-150859552

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Abstract

The theory of pulse propagation in an atmosphere coupled to an ocean is applied to the air-sea waves excited by the explosion of the volcano Krakatoa. Numerical results for a realistic atmosphere-ocean system show that the principal air pulse corresponds to the fundamental gravity mode GR_0. A small sea wave is associated with the mode GW_0 with phase velocities close to the √(gh) velocity of the ocean. Free waves with this velocity exist in the atmosphere and transfer energy to the ocean in an efficient manner. These air waves ‘jump’ over land barriers and re-excite the sea waves. An explosion of 100–150 megatons is required to produce the equivalent of the Krakatoa pressure disturbance.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1111/j.1365-246X.1967.tb02150.xDOIArticle
http://gji.oxfordjournals.org/content/13/1-3/149PublisherArticle
Additional Information:© 1967 The Royal Astronomical Society. This research was supported by the Advanced Research Projects Agency and was monitored by the Air Force Office of Scientific Research under contracts AF 49(638)-1632 with the Massachusetts Institute of Technology and AF 49(638)-1693 with Brown University.
Funders:
Funding AgencyGrant Number
Advanced Research Projects Agency (ARPA)UNSPECIFIED
Air Force Office of Scientific Research (AFOSR)AF 49(638)-1632
Air Force Office of Scientific Research (AFOSR)AF 49(638)-1693
Record Number:CaltechAUTHORS:20150930-150859552
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20150930-150859552
Official Citation:David Harkrider and Frank Press The Krakatoa Air—Sea Waves: An Example of Pulse Propagation in Coupled Systems Geophys. J. Int. (1967) 13 (1-3): 149-159 doi:10.1111/j.1365-246X.1967.tb02150.x
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60642
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:30 Sep 2015 22:25
Last Modified:30 Sep 2015 22:25

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