Earthquake source parameters and fault kinematics in the Eastern California Shear Zone

Based on waveform data from a profile of aftershocks following the north-south trace of the June 28, 1992 Landers rupture across the Mojave desert, we construct a new velocity model for the Mojave region which features a thin, slow crust. Using this model, we obtain source parameters, including depth and duration, for each of the aftershocks in the profile, and in addition, any significant (M>3.7) Joshua Tree--Landers aftershock between April, 1992 and October, 1994 for which coherent TERRAscope data were available. In all, we determine source parameters and stress-drops for 45 significant (M_w > 4) earthquakes associated with the Joshua Tree and Landers sequences, using a waveform grid-search algorithm. Stress drops for these earthquakes appear to vary systematically with location, with respect to previous seismic activity, proximity to previous rupture (i.e., with respect to the Landers rupture), and with tectonic province. In general, for areas north of the Pinto Mountain fault, stress-drops of aftershocks located off the faults involved with the Landers rupture are higher than those located on the fault, with the exception of aftershocks on the newly recognized Kickapoo (Landers) fault. Stress drops are moderate south of the Pinto Mountain fault, where there is a history of seismic swarms but no single through-going fault. In contrast to aftershocks in the eastern Transverse ranges, and related to the 1992 Big Bear, California, sequence, Landers events show no clear relationship between stress-drop and depth. Instead, higher stress-drop aftershocks appear to correlate with activity on nascent faults, or those which experienced relatively small slip during mainshock rupture.Comment: 27 pages, 15 figures, to appear in Bull. Seism. Soc. A

In the Interval of the Wave: Prince Edward Island Women\u27s Nineteenth- and Early Twentieth-Century Life Writing by Mary McDonald-Rissanen

Review of In the Interval of the Wave: Prince Edward Island Women\u27s Nineteenth- and Early Twentieth-Century Life Writing by Mary McDonald-Rissanen

A Search for Temporal Variations in Station Terms in Southern California from 1984 to 2002

We use relative arrival times and locations for similar earthquake pairs that are found using a cross-correlation method to analyze the time dependence of P and S station terms in southern California from 1984 to 2002. We examine 494 similar event clusters recorded by Southern California Seismic Network (SCSN) stations and compute absolute arrival-time variations from the differential arrival-time residuals obtained following event relocation. We compute station terms from the robust means of the absolute arrival-time residuals from all events recorded by each station at 3-month intervals. We observe nine stations with abrupt offsets in timing of 20–70 msec, which are likely caused by equipment changes during our study period. Taking these changes into account could improve the relative location accuracy for some of the event clusters. For other stations, we generally do not see systematic temporal variations greater than about 10 msec. Analysis of residuals along individual ray paths does not reveal any clear localized regions of apparent velocity changes at depth. These results limit large-scale, long-lasting temporal variations in P and S velocities across southern California during this time period to less than about ±0.2%. However, there is an increased fraction of individual travel-time residuals exceeding 20 msec immediately following major earthquakes from source regions near the mainshock rupture

Dynamical ionization ignition of clusters in intense and short laser pulses

The electron dynamics of rare gas clusters in laser fields is investigated quantum mechanically by means of time-dependent density functional theory. The mechanism of early inner and outer ionization is revealed. The formation of an electron wave packet inside the cluster shortly after the first removal of a small amount of electron density is observed. By collisions with the cluster boundary the wave packet oscillation is driven into resonance with the laser field, hence leading to higher absorption of laser energy. Inner ionization is increased because the electric field of the bouncing electron wave packet adds up constructively to the laser field. The fastest electrons in the wave packet escape from the cluster as a whole so that outer ionization is increased as well.Comment: 8 pages, revtex4, PDF-file with high resolution figures is available from http://mitarbeiter.mbi-berlin.de/bauer/publist.html, publication no. 24. Accepted for publication in Phys. Rev.

Controversies in Emotional Intelligence

The original UNH webpage about emotional intelligence was among the first online and publicly available sources of responsible information about emotional intelligence. Here, in revised form, are edited e-mail exchanges and posts about controversies concerning emotional intelligence. Although the exchanges took place in 2004, many of the controversies are still relevant to the field of EI today. The following document represents a reconstruction and update of the earlier UNH Emotional Intelligence site and information that was available on it. The reconstruction includes all the major essays and e-mail exchanges with colleagues about the theory that were relevant to emotional intelligence. As we transferred the material to the present website, it was lightly edited. The edits were limited to: Ensure all links were properly updated or proplerly referenced in APA style Correct typographical and orthographical mistakes in the earlier texts. Replace tables that had been formatted originally in HTML with formatting in MS Word (from which PDFs were made). During those edits, some tables were clarified or, if overly long, shortened to focus on what was important. For example, the tables reflecting types of data in the Measuring Emotional Intelligence section were updated and, in some instances, revised into bulleted lists; also, the table that included examples of hypothetical individuals who were low in personal intelligence was shortened to include fewer examples. The multiple individual posts on the original website were combined into the PDFs below. The first-level headings in the documents generally correspond to the names of the individual pages on the original website, with small exceptions