[
    {
        "id": "authors:7h2yt-b6753",
        "collection": "authors",
        "collection_id": "7h2yt-b6753",
        "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140924-142148467",
        "type": "article",
        "title": "Remarks on multiple reflections",
        "author": [
            {
                "family_name": "Gutenberg",
                "given_name": "B.",
                "clpid": "Gutenberg-B"
            },
            {
                "family_name": "Fu",
                "given_name": "C. Y.",
                "clpid": "Fu-Cheng-Yi"
            }
        ],
        "abstract": "One cannot help being impressed by the wonderful arrays of seismograms depicted in Mr. Ellsworth's paper and in the prepared discussions. The regularity of the time intervals of successive impulses and the alternating sequence of the change of phase are readily adapted to a mechanism of multiple reflections. If the latter is accepted, the following questions seem to merit some consideration: (a) the energy concentration, (b) the positions of the reflecting surfaces, (c) the sharpness of the source-impulse, and (d) the velocity contrast of the adjacent media.",
        "doi": "10.1190/1.1437368",
        "issn": "0016-8033",
        "publisher": "Society of Exploration Geophysicists",
        "publication": "Geophysics",
        "publication_date": "1948-01",
        "series_number": "1",
        "volume": "13",
        "issue": "1",
        "pages": "45-49"
    },
    {
        "id": "authors:r8k6q-bgc29",
        "collection": "authors",
        "collection_id": "r8k6q-bgc29",
        "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140731-155231534",
        "type": "article",
        "title": "On seismic rays and waves (Part One)",
        "author": [
            {
                "family_name": "Fu",
                "given_name": "C. Y.",
                "clpid": "Fu-Cheng-Yi"
            }
        ],
        "abstract": "The equations of motion of an elastico-viscous medium in which the material constants\nvary with position are deduced. These can be put into the form of a wave equation only\nwhen the gradients of the constants are small. By the method of Sommerfeld and Runge\nthese equations are compared with the equation of the characteristic function, whence the\ncondition for the validity of the ray method is obtained. It is similar to De Broglie's criterion\nin wave mechanics. Expressed in terms of measurable quantities in seismology, the condition\nis applied to the data recently obtained by Gutenberg for the upper layers of the earth's\ncrust. The equation of the characteristic function is used in deriving the forms of the ray\npaths for several particular velocity functions, following a method previously used by\nEpstein.",
        "doi": "10.1785/BSSA0370040331",
        "issn": "0037-1106",
        "publisher": "Seismological Society of America",
        "publication": "Bulletin of the Seismological Society of America",
        "publication_date": "1947-10",
        "series_number": "4",
        "volume": "37",
        "issue": "4",
        "pages": "331-346"
    },
    {
        "id": "authors:dka8n-k4j60",
        "collection": "authors",
        "collection_id": "dka8n-k4j60",
        "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140731-124843350",
        "type": "article",
        "title": "On the origin and energy of oscillatory earthquake waves",
        "author": [
            {
                "family_name": "Fu",
                "given_name": "C. Y.",
                "clpid": "Fu-Cheng-Yi"
            }
        ],
        "abstract": "A critical survey of the different modes of generation of oscillatory earthquake waves is given. The consequences of the failure of Hooke's law on the dispersion of waves is indicated. The energy of an earthquake is considered from the theory of elasticity with a discussion of Sezawa's result.",
        "doi": "10.1785/BSSA0350010037",
        "issn": "0037-1106",
        "publisher": "Seismological Society of America",
        "publication": "Bulletin of the Seismological Society of America",
        "publication_date": "1945-01",
        "series_number": "1",
        "volume": "35",
        "issue": "1",
        "pages": "37-42"
    }
]