Susan E. Hough
Susan Hough is a scientist in the Earthquake Hazards Program.
Science and Products
Filter Total Items: 100
A media-based assessment of damage and ground motions from the January 26th, 2001 M 7.6 Bhuj, India earthquake
We compiled available news and internet accounts of damage and other effects from the 26th January, 2001, Bhuj earthquake, and interpreted them to obtain modified Mercalli intensities at over 200 locations throughout the Indian subcontinent. These values are used to map the intensity distribution using a simple mathematical interpolation method. The maps reveal several interesting features. Within
Authors
Susan E. Hough, Stacey Martin, Roger Bilham, Gail M. Atkinson
Source properties of earthquakes near the Salton Sea triggered by the 16 October 1999 M 7.1 Hector Mine, California, earthquake
We analyze the source properties of a sequence of triggered earthquakes that occurred near the Salton Sea in southern California in the immediate aftermath of the M 7.1 Hector Mine earthquake of 16 October 1999. The sequence produced a number of early events that were not initially located by the regional network, including two moderate earthquakes: the first within 30 sec of the P-wave arrival an
Authors
S. E. Hough, H. Kanamori
Magnitude estimates of two large aftershocks of the 16 December 1811 New Madrid earthquake
The three principal New Madrid mainshocks of 1811-1812 were followed by extensive aftershock sequences that included numerous felt events. Although no instrumental data are available for either the mainshocks or the aftershocks, available historical accounts do provide information that can be used to estimate magnitudes and locations for the large events. In this article we investigate two of the
Authors
S. E. Hough, S. Martin
The 26 January 2001 M 7.6 Bhuj, India, earthquake: Observed and predicted ground motions
Although local and regional instrumental recordings of the devastating 26, January 2001, Bhuj earthquake are sparse, the distribution of macroseismic effects can provide important constraints on the mainshock ground motions. We compiled available news accounts describing damage and other effects and interpreted them to obtain modified Mercalli intensities (MMIs) at >200 locations throughout the In
Authors
S. E. Hough, S. Martin, R. Bilham, G. M. Atkinson
Empirical Green's function analysis of recent moderate events in California
I use seismic data from portable digital stations and the broadband Terrascope network in southern California to investigate radiated earthquake source spectra and discuss the results in light of previous studies on both static stress drop and apparent stress. Applying the empirical Green's function (EGF) method to two sets of M 4-6.1 events, I obtain deconvolved source-spectra estimates and corne
Authors
S. E. Hough
The 26 January 2001 "Republic Day" earthquake, India
No abstract available.
Authors
R. Bendick, R. Bilham, E. Fielding, V.K. Gaur, S. E. Hough, G. Kier, M.N. Kulkarni, S. Martin, K. Mueller, M. Mukul
Triggered earthquakes and the 1811-1812 New Madrid, central United States, earthquake sequence
The 1811-1812 New Madrid, central United States, earthquake sequence included at least three events with magnitudes estimated at well above M 7.0. I discuss evidence that the sequence also produced at least three substantial triggered events well outside the New Madrid Seismic Zone, most likely in the vicinity of Cincinnati, Ohio. The largest of these events is estimated to have a magnitude in the
Authors
S. E. Hough
On the modified Mercalli intensities and magnitudes of the 1811-1812 New Madrid earthquakes
We reexamine original felt reports from the 1811–1812 New Madrid earthquakes and determine revised isoseismal maps for the three principal mainshocks. In many cases we interpret lower values than those assigned by earlier studies. In some cases the revisions result from an interpretation of original felt reports with an appreciation for site response issues. Additionally, earlier studies had assig
Authors
S. E. Hough, J.G. Armbruster, L. Seeber, J.F. Hough
A volcano in North Carolina? A closer look at a tall tale
The legacy of the 1811-1812 New Madrid, Central United States, earthquakes is one of tremendous enigma. We are left with just enough contemporary information to provide a measure of constraint on the isoseismal contours and therefore magnitudes of the three principal events (Nuttli, 1973; Street, 1982; Johnston, 1996; Hough et al., 2000), yet given the sparse population density and limited documen
Authors
Susan E. Hough
The 1998 earthquake sequence south of Long Valley Caldera, California: Hints of magmatic involvement
A significant episode of seismic and geodetic unrest took place at Long Valley Caldera, California, beginning in the summer of 1997. Activity through late May of 1998 was concentrated in and around the south moat and the south margin of the resurgent dome. The Sierran Nevada block (SNB) region to the south/southeast remained relatively quiet until a M 5.1 event occurred there on 9 June 1998 (UT).
Authors
S. E. Hough, R.S. Dollar, P. Johnson
Science and Products
Filter Total Items: 100
A media-based assessment of damage and ground motions from the January 26th, 2001 M 7.6 Bhuj, India earthquake
We compiled available news and internet accounts of damage and other effects from the 26th January, 2001, Bhuj earthquake, and interpreted them to obtain modified Mercalli intensities at over 200 locations throughout the Indian subcontinent. These values are used to map the intensity distribution using a simple mathematical interpolation method. The maps reveal several interesting features. Within
Authors
Susan E. Hough, Stacey Martin, Roger Bilham, Gail M. Atkinson
Source properties of earthquakes near the Salton Sea triggered by the 16 October 1999 M 7.1 Hector Mine, California, earthquake
We analyze the source properties of a sequence of triggered earthquakes that occurred near the Salton Sea in southern California in the immediate aftermath of the M 7.1 Hector Mine earthquake of 16 October 1999. The sequence produced a number of early events that were not initially located by the regional network, including two moderate earthquakes: the first within 30 sec of the P-wave arrival an
Authors
S. E. Hough, H. Kanamori
Magnitude estimates of two large aftershocks of the 16 December 1811 New Madrid earthquake
The three principal New Madrid mainshocks of 1811-1812 were followed by extensive aftershock sequences that included numerous felt events. Although no instrumental data are available for either the mainshocks or the aftershocks, available historical accounts do provide information that can be used to estimate magnitudes and locations for the large events. In this article we investigate two of the
Authors
S. E. Hough, S. Martin
The 26 January 2001 M 7.6 Bhuj, India, earthquake: Observed and predicted ground motions
Although local and regional instrumental recordings of the devastating 26, January 2001, Bhuj earthquake are sparse, the distribution of macroseismic effects can provide important constraints on the mainshock ground motions. We compiled available news accounts describing damage and other effects and interpreted them to obtain modified Mercalli intensities (MMIs) at >200 locations throughout the In
Authors
S. E. Hough, S. Martin, R. Bilham, G. M. Atkinson
Empirical Green's function analysis of recent moderate events in California
I use seismic data from portable digital stations and the broadband Terrascope network in southern California to investigate radiated earthquake source spectra and discuss the results in light of previous studies on both static stress drop and apparent stress. Applying the empirical Green's function (EGF) method to two sets of M 4-6.1 events, I obtain deconvolved source-spectra estimates and corne
Authors
S. E. Hough
The 26 January 2001 "Republic Day" earthquake, India
No abstract available.
Authors
R. Bendick, R. Bilham, E. Fielding, V.K. Gaur, S. E. Hough, G. Kier, M.N. Kulkarni, S. Martin, K. Mueller, M. Mukul
Triggered earthquakes and the 1811-1812 New Madrid, central United States, earthquake sequence
The 1811-1812 New Madrid, central United States, earthquake sequence included at least three events with magnitudes estimated at well above M 7.0. I discuss evidence that the sequence also produced at least three substantial triggered events well outside the New Madrid Seismic Zone, most likely in the vicinity of Cincinnati, Ohio. The largest of these events is estimated to have a magnitude in the
Authors
S. E. Hough
On the modified Mercalli intensities and magnitudes of the 1811-1812 New Madrid earthquakes
We reexamine original felt reports from the 1811–1812 New Madrid earthquakes and determine revised isoseismal maps for the three principal mainshocks. In many cases we interpret lower values than those assigned by earlier studies. In some cases the revisions result from an interpretation of original felt reports with an appreciation for site response issues. Additionally, earlier studies had assig
Authors
S. E. Hough, J.G. Armbruster, L. Seeber, J.F. Hough
A volcano in North Carolina? A closer look at a tall tale
The legacy of the 1811-1812 New Madrid, Central United States, earthquakes is one of tremendous enigma. We are left with just enough contemporary information to provide a measure of constraint on the isoseismal contours and therefore magnitudes of the three principal events (Nuttli, 1973; Street, 1982; Johnston, 1996; Hough et al., 2000), yet given the sparse population density and limited documen
Authors
Susan E. Hough
The 1998 earthquake sequence south of Long Valley Caldera, California: Hints of magmatic involvement
A significant episode of seismic and geodetic unrest took place at Long Valley Caldera, California, beginning in the summer of 1997. Activity through late May of 1998 was concentrated in and around the south moat and the south margin of the resurgent dome. The Sierran Nevada block (SNB) region to the south/southeast remained relatively quiet until a M 5.1 event occurred there on 9 June 1998 (UT).
Authors
S. E. Hough, R.S. Dollar, P. Johnson