To: “A new method for shear wave logging,” Choro Kitsunezaki, (GEOPHYSICS, v. 45, p. 1489–1506)

Geophysics ◽  
1981 ◽  
Vol 46 (5) ◽  
pp. 816-816 ◽  
Keyword(s):  
Shear Wave ◽  
New Method ◽  
Reversed Polarity

The author of “A new method for shear wave logging,” Choro Kitsunezaki, (Geophysics, v. 45, p. 1489–1506), has forwarded the following changes in the paper. The y‐component (bottom traces of Figures 16 and 17) described in the subsection “Records” on p. 1498 is actually the—x‐component (reversed polarity).

To: “A new method for shear‐wave logging,” October 1980, GEOPHYSICS (v. 45, p. 1489–1506)

Geophysics ◽  
1982 ◽  
Vol 47 (7) ◽  
pp. 1131-1131
Keyword(s):  
Shear Wave ◽  
New Method ◽  
Hand Column ◽  
Right Hand ◽  
Entire Sentence ◽  
Reversed Polarity

The author of “A new method for shear‐wave logging,” Chōrō Kitsunezaki, has forwarded us further changes to his paper which appeared in October 1980 Geophysics (v. 45, p. 1489–1506) and an Errata which appeared in May 1981 Geophysics, v. 46, p. 816. In the paper, caption for Figure 16, p. 1497, should read “Transmitter—F = 88 N, . . .” instead of “Transmitter F = . . .” On p. 1498, 8th line from the bottom of right hand column should be “−x‐ and x‐directions” instead of “x‐ and y‐directions.” In the Errata, delete the entire sentence, “The y‐component . . . (reversed polarity).”

A NEW METHOD OF PATTERN SHOOTING

Geophysics ◽  
1955 ◽  
Vol 20 (3) ◽  
pp. 539-564 ◽  
Author(s):  
J. O. Parr ◽  
W. H. Mayne
Keyword(s):  
Finite Number ◽  
Finite Length ◽  
Vertical Line ◽  
New Method ◽  
Horizontal Line ◽  
Wavelength Band ◽  
Continuous Band ◽  
Reversed Polarity ◽  
Multiple Detectors ◽  
Horizontal Area

In areas where reflection shooting is difficult, it is often necessary to attenuate the energy in a broad continuous band of disturbing wavelengths to less than a few hundredths of what would be recorded if all units were bunched together. The wavelength band of the attenuated energy should be adjacent to the band of reflection wavelengths received. Attenuation of the undesired energy is best accomplished with multiple detectors or charges. In many areas the pattern should attenuate energy horizontally propagated in all directions, not just in the direction of the detector line. Neither a finite number of uniformly effective, uniformly spaced units in line nor a uniformly effective sheet of finite length will accomplish this result. A system for gradation of the effectiveness of units described in this paper does produce this result (not only for in‐line disturbances but also for disturbances coming in from the side of the line). The attenuation band can be made broad with good attenuation or narrower with still better attenuation, as desired. The variation of effectiveness can be applied to detectors or charges arranged in a horizontal line, over a horizontal area, in a vertical line, or over a vertical area. The principle of varying effectiveness can also be applied to reversed‐polarity detectors in order to accentuate certain apparent wavelengths.

scholarly journals A new method to quantify penile erection hardness: real-time ultrasonic shear wave elastography

2020 ◽  
Vol 9 (4) ◽  
pp. 1735-1742
Author(s):  
Hao Cheng ◽  
Zichang Niu ◽  
Fengyue Xin ◽  
Lin Yang ◽  
Litao Ruan
Keyword(s):  
Real Time ◽  
Shear Wave ◽  
Penile Erection ◽  
Shear Wave Elastography ◽  
New Method ◽  
Ultrasonic Shear

Shear wave elastography as a new method to identify parotid lymphoma in primary Sjögren Syndrome patients: an observational study

2020 ◽  
Vol 40 (8) ◽  
pp. 1275-1281 ◽  
Author(s):  
Maria Bădărînză ◽  
Oana Serban ◽  
Lavinia Maghear ◽  
Corina Bocsa ◽  
Mihaela Micu ◽  
...  
Keyword(s):  
Observational Study ◽  
Shear Wave ◽  
Shear Wave Elastography ◽  
Sjögren Syndrome ◽  
New Method ◽  
Sjogren Syndrome ◽  
Primary Sjögren Syndrome

Seismic velocity determinations in the New Madrid seismic zone: A new method using local earthquakes

1977 ◽  
Vol 67 (2) ◽  
pp. 413-424
Author(s):  
Brian J. Mitchell ◽  
Braik M. Hashim
Keyword(s):  
Shear Wave ◽  
Seismic Velocity ◽  
Thick Layer ◽  
Nonlinear Least Squares ◽  
Wave Model ◽  
Compressional Wave ◽  
New Method ◽  
Seismic Zone ◽  
Travel Times ◽  
Mississippi Embayment

Abstract A new method is developed and used to determine compressional- and shear-wave models for the crust in the northernmost portion of the Mississippi embayment. A nonlinear least-squares process fits contiguous straight lines to data obtained using a seismic network, and yields apparent velocities and points of intersection of the lines. The compressional-wave model consists of a 5.6-km-thick layer with a velocity of 6.19 km/sec overlying an 18.1 -km-thick layer with a velocity of 6.38 km/sec. These are underlain by material having a velocity of 7.17 km/sec. Since the shear-wave data are characterized by a large amount of scatter, only a two-layer model was obtained. It consists of a 21.5-km-thick layer having a velocity of 3.62 km/sec above material with a velocity of 4.10 km/sec. These models are overlain by variable thicknesses of sediments of the Mississippi embayment. The travel times of compressional waves at short distances indicate that the great preponderance of earthquake foci lie at shallow depths. Although the travel times are relatively insensitive to small changes in depth for these shallow earthquakes, few data points imply depths greater than about 10 km, and most are compatible with shallower depths.

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