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  • ...ed in a [[Special:MyLanguage/Dictionary:Fourier series|Fourier series]] of period ''T'': ...ce and 1 dimension of time, as is encountered in problems dealing with the wave equation, we have the forward Fourier transform from
    11 KB (1,757 words) - 06:57, 15 June 2017
  • ...in &#x2018;&#x2018;per second&#x2019;&#x2019; or Hertz. The reciprocal of period. Compare [[Special:MyLanguage/Dictionary:spatial_frequency|''spatial freque ...ffers from the true wavelength. For nonperiodic waves, (<b>d</b>) dominant period is based on the time between principal adjacent troughs (or peaks); (<b>e</
    2 KB (289 words) - 14:44, 2 March 2017
  • {{#category_index:G|G-wave}} ...d to an oceanic path. Velocity is often nearly constant at 4.4 km/s so the wave appears nearly impulsive. Named for Gutenberg.
    340 bytes (47 words) - 16:53, 6 February 2017
  • {{#category_index:L|L<sub>''g''</sub>-wave}} A short-period guided surface wave that travels in the continental crust. The &#x2018;&#x2018;''g''&#x2019;&#x
    260 bytes (36 words) - 18:48, 24 August 2020
  • ...H<sub>2</sub>O, for example, are ice, water, and steam. <b>5</b>. A short period of time, as a &#x2018;&#x2018;phase of igneous activity.&#x2019;&#x2019;
    1 KB (245 words) - 16:56, 8 March 2018
  • ...mbda;'', and ''T'' are, respectively, velocity, frequency, wavelength, and period.<ref>Sheriff, R. E. and Geldart, L. P., 1995, Exploration Seismology, 2nd E '''4'''. A designation for ''[[Special:MyLanguage/Dictionary:Love wave|Love wave]]s'' (q.v.).
    3 KB (497 words) - 11:00, 29 November 2020
  • {{#category_index:R|R<sub>g</sub>-wave}} A short-period Rayleigh wave that travels as a guided wave in the crust. (The subscript &#x2018;&#x2018;g&#x2019;&#x2019; refers to th
    241 bytes (38 words) - 11:02, 16 March 2020
  • ...</b>. Period; the time between adjacent corresponding points on a periodic wave; the reciprocal of frequency. See Figure [[Special:MyLanguage/Dictionary:Fi
    419 bytes (64 words) - 15:52, 23 June 2018
  • A short period (1 s or less) wave which travels through the ocean with the speed of sound in water; it is occ
    319 bytes (51 words) - 17:22, 31 May 2017
  • ...pecial:MyLanguage/Dictionary:Fig_V-12|V-12]]) is applied during a <b>sweep period</b> typically lasting up to 32 s. The original Vibroseis vibrated vertically; it is sometimes be called a "P-wave" vibrator because most of the energy radiated near-vertically travels as P-
    2 KB (361 words) - 23:52, 19 September 2020
  • ...ffers from the true wavelength. For nonperiodic waves, (<b>d</b>) dominant period is based on the time between principal adjacent troughs (or peaks); (<b>e</
    543 bytes (87 words) - 01:40, 1 May 2020
  • ...on has 3 binary files, one each for the density, P-wave velocity and the S-wave velocity. A README is also included. ...c and well data and releases it to the public after a data confidentiality period of a few years. The purpose of releasing these data to the public is to pro
    42 KB (6,465 words) - 18:07, 15 September 2021
  • ...utzmann |first3=M. |last3=Schimmel |first4=A. |last4=Mangeney |title=Ocean wave sources of seismic noise |journal=J. Geophys. Res. |volume=115 |year=2011}} ...te directions. These tremors have a period which is half of the water wave period and are usually called 'secondary microseisms'. A slight, but detectable,
    9 KB (1,380 words) - 17:35, 17 March 2015
  • ...on to students his broad spectrum of knowledge and experience. During this period, he also spent one year as a Fulbright Fellow at the University of Tokyo, a ...ly well known are those dealing with the detailed determination of seismic wave velocities in rock from seismic reflection data. His 1952 book, Seismic Pro
    5 KB (775 words) - 23:49, 3 March 2022
  • ...umbia. And, as expected, many of the remarkable discoveries of the ensuing period were made possible by instruments they had developed during the war. ...scientific appetite. Often, when I had an interesting and somewhat sticky wave-related problem, I would show him the observations and ask if he wanted to
    29 KB (4,456 words) - 10:40, 16 September 2020
  • ...United States in 1964. In think Enders will agree that was a most fruitful period. (''At this point Treitel produces a bulky file - yellowing sheets of varie ...he late '60s I initiated a project to use the digital computer to simulate wave propagation in heterogeneous media by using the method of finite difference
    27 KB (4,323 words) - 17:53, 31 August 2020
  • February of 1952. During this period, the first two of his four children Albert's doctorate thesis was on "Wave Front Charts and Raypath Plotters."
    6 KB (879 words) - 13:57, 5 June 2014
  • * 2018 “Time reversal for wave refocusing and scatterer detection using machine learning,” [[Matan Shust * 2017 "Time step n-tupling for wave equations", [[Lasse Amundsen]], [[Ørjan Pedersen]]
    23 KB (2,964 words) - 01:55, 29 September 2019
  • ...for his work in many areas of geophysics including in-seam seismic channel wave studies in coal. :1984 Renaming of the Rayleigh-channel wave into [[Krey-wave]]
    12 KB (1,798 words) - 14:02, 28 December 2016
  • ...s authoritative research in seismology has revealed the usefulness of long-period surface waves and free oscillation in discerning the earth's structure from ...time he joined its faculty, and by 1952 he became a professor during which period of time he became interested also in oceanography and, consequently, happil
    11 KB (1,690 words) - 17:23, 11 May 2018

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