Accession Number:

AD0652814

Title:

REPRESENTATION OF NEARSHORE DISTORTION OF TSUNAMIS BY BILINEAR OPERATORS,

Descriptive Note:

Corporate Author:

HAWAII INST OF GEOPHYSICS HONOLULU

Personal Author(s):

• Groves,Gordon W.
• Harvey,Robert R.

Report Date:

1967-03-01

Pagination or Media Count:

33.0

Abstract:

Tsunamis exhibit nonlinear behavior at islands and continental coastlines. The transformation from deep to shallow water has been approximated by the first three terms of the multidimensional Taylor expansion, the constant, linear, and bilinear terms. The transformation operator, or emulator, has been determined from marigrams at Midway and Hilo for a single tsunami, letting Midway approximate the deep-water input to Hilo. It is then applied to the Midway record from the same tsunami and from a second tsunami. The outputs, or emulations, are compared to Hilo records for the respective tsunamis. The difference between them is summarized by the RMS residue. The emulators determined from different tsunamis and different lag configurations are compared. The results indicate the simple input-output hypothesis is not justified in these cases.

Descriptors:

• *OCEAN WAVES
• *COASTAL REGIONS
• *ISLANDS
• DISTORTION
• HAWAII
• GEOPHYSICS
• ENVIRONMENTS
• NAVAL RESEARCH
• INPUT OUTPUT DEVICES
• REAL NUMBERS

Subject Categories:

• Physical and Dynamic Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE