Digital camcorders and software programs can generate THM files, which are, essentially, thumbnail images of other media files. Typically, a THM file contains the first frame of the video file whose thumbnail it represents. The names of THM files are similar to the names of the underlying media files. THM files are based on the JPEG format and can be opened by the same programs that open JPEG files.
The most recent major earthquake occured near Haiti. Earthquakes occur most often in seismically active regions, most often the South Pacific around the so called Pacific Rinâ¦g of Fire, and any region where continental plates interact.
Alaska and the west coast states, near where the North American plate meets the Pacific plate, experience the most frequent earthquake activity. Look again at the map, and see that earthquakes can begin close to the Earth's surface or deep inside the crust. Geologists classify earthquakes as shallow (those that start 70 kilometers or less underground), deep (earthquakes beginning 300 km or more below the surface), and intermediate (quakes between 70 and 300 km).