Zobrazeno 1 - 10
of 16
pro vyhledávání: '"C. Patrick Ervin"'
Publikováno v:
Open-File Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6d7151c2efe93d4f7948f54a7445d4c
https://doi.org/10.3133/ofr03157
https://doi.org/10.3133/ofr03157
Autor:
H. Paul Shuch, C. Patrick Ervin
Publikováno v:
Science News. 143:355
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7480d1cadf16a6b2930820e74110f3ce
https://doi.org/10.2307/3977339
https://doi.org/10.2307/3977339
Publikováno v:
Bulletin of the Seismological Society of America. 76:1001-1009
The annual release of strain energy by earthquakes in the New Madrid seismic zone, as represented by the strain factor, is calculated and cumulated. When the main annual energy release, in the form of a linear regression, is subtracted from the data,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e3e780dcac53eda286d625b962145c2
https://doi.org/10.1785/bssa0760041001
https://doi.org/10.1785/bssa0760041001
Publikováno v:
GEOPHYSICS. 48:582-589
A computer algorithm is described that automates the processing of refraction data acquired by conventional, multichannel, seismic reflection profiling, beginning with the determination of the first arrival times and ending with a contoured velocity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46209ea37c5f44aa54aee9b4d64c9957
https://doi.org/10.1190/1.1441488
https://doi.org/10.1190/1.1441488
Autor:
C. Patrick Ervin
Publikováno v:
Computers & Geosciences. 2:211-217
An algorithm is developed for making magnetic field “reduction-to-the-pole” computations using two-dimensional Fourier series. A significant saving in computer time is achieved by using a “look-up table” to reduce the number of trigonometric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8aef6128f912af3a7d3d8254186c9e64
https://doi.org/10.1016/0098-3004(76)90108-4
https://doi.org/10.1016/0098-3004(76)90108-4
Autor:
Issa El-Hussain, C. Patrick Ervin
Publikováno v:
Seismological Research Letters. 59:285-288
A pressure wave, initiated by water loading and propagating downward through subsurface water contained in fractures, has been hypothesized as a mechanism for triggering earthquakes along pre-existing faults at depths up to 15–20 km. Such a trigger
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9526ad20d94645887b478b4c0010974f
https://doi.org/10.1785/gssrl.59.4.285
https://doi.org/10.1785/gssrl.59.4.285
Autor:
M. G. Mudrey, C. Patrick Ervin
Publikováno v:
Journal of Geophysical Research. 81:4917-4922
Many small plutons of syenitic, lamprophyric, and granitic rocks occur in the western part of the lower Precambrian Vermilion district in northeastern Minnesota and in adjacent areas to the west that are not covered by glacial drift. They intrude the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c6f9d4248e17b91eb08ee464cddfa44
https://doi.org/10.1029/jb081i026p04917
https://doi.org/10.1029/jb081i026p04917
Autor:
C. Patrick Ervin
Publikováno v:
GEOPHYSICS. 50:867-869
In the exploration environment, a primary application of gravity surveying is regional reconnaissance. The first step in such a survey is to establish a base‐station network. Since an error in the network will propagate to many stations in the subs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e74cf16ae67dd8fa6ffb16dd79af7d3d
https://doi.org/10.1190/1.1441962
https://doi.org/10.1190/1.1441962
Autor:
L. D. McGlnnis, C. Patrick Ervin
Publikováno v:
Journal of Geophysical Research. 85:4882
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2613d2c8f089dc506493149418163e24
https://doi.org/10.1029/jb085ib09p04882
https://doi.org/10.1029/jb085ib09p04882
Autor:
C. Patrick Ervin, Sigmund Hammer
Publikováno v:
Geology. 3:145
Roseau Lake in northwestern Minnesota occupies a conspicuous, circular depression in a level plain of glacial drift. A detailed gravity survey of the lake was made to determine if the Precambrian bed rock under the thin cover of glacial drift exhibit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::824d02f1afca253fe960eb050e806dd9
https://doi.org/10.1130/0091-7613(1975)3<145:cokags>2.0.co
https://doi.org/10.1130/0091-7613(1975)3<145:cokags>2.0.co