[
    {
        "id": "authors:fsdn7-5r223",
        "collection": "authors",
        "collection_id": "fsdn7-5r223",
        "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130124-104506282",
        "type": "book_section",
        "title": "Source Studies from Isolated Seismic Signals",
        "author": [
            {
                "family_name": "Ben-Menahem",
                "given_name": "Ari",
                "clpid": "Ben-Menahem-A"
            }
        ],
        "abstract": "Since 1960, new methods have been developed for extracting source information\nfrom surface-wave signals in the frequency range 2 mc/sec to 20 mc/sec.\nRecently, similar methods were successfully applied to body waves in the frequency\nrange 10 mc/sec to 100 mc/sec.\nThe author outlines the historical development of these ideas and demonstrates\nthe present state of the art by a few examples which show clearly the success, as\nwell as the limitations, of existing methods. Some new data are presented. Source\nmechanisms of the Queen Charlotte Island earthquake of 22 August 1949, the Sanriku\nearthquake of 2 March 1933, and the Iran shock of 1 September 1962 are revealed\nfrom analyses of mantle surface waves. As a counterexample, the source mechanism\nof a deep Banda Sea shock is derived from spectra of P and S waves recorded\nby stations of the World- Wide Standard Seismograph Network. Emphasis is placed\non the derivation of the force system and the time function at the source by the\nphase-equalization method, and the source dimensions and rupture speed by the directivity\nmethod.",
        "publisher": "University of Michigan",
        "publication_date": "1965"
    }
]