CAPjoint, A Computer Software Package for Joint Inversion of Moderate Earthquake Source Parameters with Local and Teleseismic Waveforms

Abstract The issues, problems and possible solutions involved in teaching a modern course on mechanisms and kinematics are addressed from the perspective of a professor and a student. A historical examination shows the value of modern (computer) solution of classical dilemmas. The structure of an introductory course is then presented, with comments on its educational attributes. The solution of several design problems with LINCAGES©, a computer software package, demonstrates the prowess of the modem student/computer liaison.

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Earthquake source parameters that display the first digit phenomenon

Nonlinear Processes in Geophysics ◽

10.5194/npg-22-625-2015 ◽

2015 ◽

Vol 22 (5) ◽

pp. 625-632

Author(s):

P. A. Toledo ◽

S. R. Riquelme ◽

J. A. Campos

Keyword(s):

Seismic Moment ◽

Waiting Times ◽

Source Parameters ◽

Tohoku Earthquake ◽

Earthquake Source ◽

Coseismic Slip ◽

Self Organized ◽

Earthquake Source Parameters ◽

Self Organized Criticality

Abstract. We study the main parameters of earthquakes from the perspective of the first digit phenomenon: the nonuniform probability of the lower first digit different from 0 compared to the higher ones. We found that source parameters like coseismic slip distributions at the fault and coseismic inland displacements show first digit anomaly. We also found the tsunami runups measured after the earthquake to display the phenomenon. Other parameters found to obey first digit anomaly are related to the aftershocks: we show that seismic moment liberation and seismic waiting times also display an anomaly. We explain this finding by invoking a self-organized criticality framework. We demonstrate that critically organized automata show the first digit signature and we interpret this as a possible explanation of the behavior of the studied parameters of the Tohoku earthquake.

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Estimation of earthquake source parameters from observations by a standard network

Physics of The Earth and Planetary Interiors ◽

10.1016/0031-9201(82)90094-2 ◽

1982 ◽

Vol 30 (2-3) ◽

pp. 94-104 ◽

Cited By ~ 1

Author(s):

N.V. Kondorskaya ◽

O.K. Kedrov

Keyword(s):

Source Parameters ◽

Earthquake Source ◽

Earthquake Source Parameters

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Earthquake Source Parameters: Rapid Estimates for Tsunami Forecasts and Warnings

Complexity in Tsunamis, Volcanoes, and their Hazards ◽

10.1007/978-1-0716-1705-2_160 ◽

2021 ◽

pp. 299-333

Author(s):

Barry Hirshorn ◽

Stuart Weinstein ◽

Dailin Wang ◽

Kanoa Koyanagi ◽

Nathan Becker ◽

...

Keyword(s):

Source Parameters ◽

Earthquake Source ◽

Earthquake Source Parameters

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The Soddy spheres of a 4-ball tetrahedron: Part 1

The Mathematical Gazette ◽

10.1017/s0025557200183032 ◽

2008 ◽

Vol 92 (524) ◽

pp. 205-213 ◽

Cited By ~ 1

Author(s):

Michael Fox ◽

Adrian Oldknow ◽

John Rigby ◽

Christopher Zeeman

Keyword(s):

Software Package ◽

Special Class ◽

Presidential Address ◽

Computer Software ◽

Mathematical Association ◽

Computer Software Package

New discoveries about the Soddy circles of a triangle were published in the Gazette [1] in 1995; they are summarised below. Extensions of wellknown results in the geometry of the triangle to that of the tetrahedron were presented by Zeeman in his 2004 Presidential Address at the Mathematical Association Conference in York [2]. Using the computer software package Cabri 3D, we have discovered new results which extend the Soddy circles of a triangle to Soddy spheres of a special class of tetrahedra. This article is the first of two which present our discoveries, as well as relevant aspects of the established geometry of tetrahedra, together with their proofs.

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