Halpern-Huang directions in effective scalar field theory

Halpern and Huang recently showed that there are relevant directions in the space of interactions at the Gaussian fixed point. I show that their result can be derived from Polchinski's form of the Wilson renormalization group. The derivation shows that the existence of these directions is independent of the cutoff function used.Comment: 6 pages, plain Te

Seismic moment tensor catalog for crustal earthquakes in the Cook Inlet and Susitna region of southern Alaska

We determine moment tensor solutions for 53 earthquakes in southern Alaska, which include 9 in Beluga, 22 in Cook Inlet, and 22 in Susitna. The moment tensors were estimated using both the waveforms and the first-motion polarities. The best solution was obtained through a grid-search in the double-couple moment tensor space using the "cut-and-paste" (CAP) approach of Zhu and Helmberger (1996).This project was supported by USGS Earthquake Hazards Program (contract G15AP00052)

Seismic moment tensors for six events in the Minto Flats fault zone, 2012-2016

Using seismic waveform data, we determine seismic moment tensor solutions for six events in the Minto Flats fault zone, 2012-2016.This project was supported by the National Science Foundation, Grant EAR-1352688

Seismic moment tensor catalog for southern Alaska

The files here are part of the PhD thesis work by Vipul Silwal. This supplement will be cited in a manuscript to be submitted. A seismic moment tensor catalog of 106 events was generated using body waves and surface waves. The best solution (M0) was obtained through a grid-search in the double-couple moment tensor space (M) using the "cut-and-paste" (CAP) approach of Zhu and Helmberger (1996). The waveform fits for the 21 events in the Part I catalog is shown in Figure A, with the best-fitting depth plots in Figure B. The uncertainty analysis for these Part I events is shown in Figure C. The waveform fits for the other 85 events (Part II) is shown in Figure D; for these events the best depth search and uncertainty analysis was not performed.This work was supported by the Alaska Earthquake Center and by a grant from the National Science Foundation (EAR 1251971)