USGS Multimedia Gallery for Set: Instruments http://gallery.usgs.gov/ en-us A list of photography and images from the U.S. Geological Survey's Multimedia Gallery (http://gallery.usgs.gov). http://gallery.usgs.gov/images/USGS.gif USGS http://gallery.usgs.gov/ <![CDATA[Vibrating Trailer for Seismic Reflection Surveys]]> Towed behind a pickup truck, this large heavy trailer (with two white water tanks on the back for added weight) vibrates and sends low-amplitude sound waves into the ground. An array of seismometers record the returning echoes. Computer processing of the recordings will produce a picture of the Earth that is similar to sonograms used in medical imaging. 

]]> tpratt - at - usgs.gov (Thomas Pratt) http://gallery.usgs.gov/photos/06_20_2012_eiy4CpoCBV_06_20_2012_0 http://gallery.usgs.gov/photos/06_20_2012_eiy4CpoCBV_06_20_2012_0 Wed, 20 Jun 2012 00:00:00 EDT earthquake quake hazard SeismicReflection SeismicSurvey vibration NR2012_06_21 <![CDATA[Seismic station, USGS Northern California Seismic Network]]> Traditional seismic stations such as this one require a source of power (solar here), a poured concrete foundation and several square feet of space. They are not always practical to install in urban areas, and that's where NetQuakes comes in.

]]> croker - at - usgs.gov (David Croker) http://gallery.usgs.gov/photos/04_11_2012_imd5GsrFFA_04_11_2012_0 http://gallery.usgs.gov/photos/04_11_2012_imd5GsrFFA_04_11_2012_0 Wed, 11 Apr 2012 00:00:00 EDT earthquakes CitizenScience California SeismicStation <![CDATA[NetQuakes Instrument in Place ]]>

NetQuakes strong-motion instruments enable seismologists to collect extensive data in urban areas where installing traditional seismographs is not practical.  This instrument (in blue, to the right of the upended chairs) takes up very little space in a San Francisco Bay Area resident's garage. It is the size of a car battery, runs on a home wifi network and captures data on an ordinary 2GB flash drive.

]]> jhamilton - at - usgs.gov (John Hamilton) http://gallery.usgs.gov/photos/04_10_2012_nr37LxwKKF_04_10_2012_0 http://gallery.usgs.gov/photos/04_10_2012_nr37LxwKKF_04_10_2012_0 Tue, 10 Apr 2012 00:00:00 EDT earthquakes CitizenScience NetQuakes Instruments