Deep water transport by acoustic-gravity waves generated by submarine earthquakes

Alghazi, Mohammed 2023. Deep water transport by acoustic-gravity waves generated by submarine earthquakes. PhD Thesis, Cardiff University. Item availability restricted.

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Abstract

The assumption that the ocean is incompressible has been carried out in the vast majority of research on deep ocean currents which is reasonable in some applications. An incompressible ocean with an average depth h has for every frequency ω and wave number κ only one progressive wave which is the gravity wave. However, taking compressibility into account gives m progressive wave modes for every frequency ω for horizontal wave numbers kn where n = 0,1,...,m and k0 is almost equal to the gravity wave in the incompressible case. These waves, known as Acoustic-Gravity Waves (AGWs), are progressive types of waves generated among others by the interaction between wind and wave, submarine earthquake, and other sources with amplitudes governed by the restoring force of gravity [21] [54]. Similarly to other well-known water drifting mechanisms, AGWs may play an important role in creating deep currents in the ocean and transporting water, which are vital for the healthness of the oceans. Although this mechanism has been demonstrated qualitatively, it is still not known how much water is being transported compared to other mechanisms. To this end, we study the role of AGWs generated by submarine earthquakes and estimate the amount of water transferred by these waves. It is found that AGWs play a prominent role in transporting water to various locations in the ocean [22]

Item Type:	Thesis (PhD)
Date Type:	Completion
Status:	Unpublished
Schools:	Mathematics
Date of First Compliant Deposit:	11 April 2024
Last Modified:	11 Apr 2024 14:32
URI:	https://orca.cardiff.ac.uk/id/eprint/167830

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