<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>Seth S. Haines</dc:creator>
  <dc:date>2007</dc:date>
  <dc:description>Near-surface seismic surveys often employ hammer impacts to create seismic energy. Shear-wave surveys using horizontally polarized waves require horizontal hammer impacts against a rigid object (the source) that is coupled to the ground surface. I have designed, built, and tested a source made out of aluminum and equipped with spikes to improve coupling. The source is effective in a variety of settings, and it is relatively simple and inexpensive to build.</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.3133/ofr20071406</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Geological Survey (U.S.)</dc:publisher>
  <dc:title>A Hammer-Impact, Aluminum, Shear-Wave Seismic Source</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>