Preliminary isoseismal map intensity distribution for the Laramie Mountains, Wyoming, earthquake of October 18, 1984

1985 ◽  
Author(s):  
C.W. Stover
Keyword(s):  
Intensity Distribution ◽  
Isoseismal Map ◽  
Laramie Mountains

Soil conditions and damage in the Mexico earthquake of July 28, 1957

1959 ◽  
Vol 49 (2) ◽  
pp. 179-191
Author(s):  
C. Martin Duke ◽  
David J. Leeds
Keyword(s):  
Mexico City ◽  
Intensity Distribution ◽  
Tall Buildings ◽  
The Other ◽  
Soil Conditions ◽  
Isoseismal Map ◽  
Mexico Earthquake ◽  
Local Geology

abstract A report is given of observations of the effects of soil conditions on damage in Mexico City and Guerrero State in the earthquake of July 28, 1957. An isoseismal map is presented which identifies anomalies in intensity distribution which appear to be closely related to local geology and soil conditions. Comparison is made between Mexico City, 170 miles from the epicenter and founded on the deep alluvium of Lake Texcoco, and several cities and villages 60 miles from the epicenter, founded on firmer deposits or granite. Mexico City suffered Modified Mercalli intensities of VII and IV, respectively, in that part of the lake-bed area where tall buildings stand, and on the more compact formations. Of the several cities 60 miles from the epicenter, all suffered intensity V or less except Chilpancingo, where the intensity was VII to VIII. Chilpancingo rests on deep unconsolidated deposits; the other places are on rock or shallower unconsolidated deposits.

The Borah Peak, Idaho Earthquake of October 28, 1983—Isoseismal Map and Intensity Distribution

1985 ◽  
Vol 2 (1) ◽  
pp. 11-16 ◽  
Author(s):  
Carl W. Stover
Keyword(s):  
United States ◽  
Intensity Distribution ◽  
The United States ◽  
Severe Damage ◽  
Isoseismal Map ◽  
Peak Event

The Borah Peak, Idaho, earthquake of October 28, 1983, caused two deaths in Challis and injured one person in Mackay. The most severe damage occurred in Mackay and Challis, where 11 businesses and 239 homes were damaged. Maximum Modified Mercalli intensity of VII was rated for both Challis and Mackay based on damage due to vibrational effects. Intensity IX was assigned to the area along the 34-kilometer-length of surface faulting. This event is comparable to the 1959 Hebgen Lake, Montana, earthquake, which was assigned an intensity X based on geologic effects and VII - VIII on vibrational effects (Steinbrugge and Cloud, 1962). The Borah Peak event was felt over 855,000 km2 of the United States and Canada.

The Lima earthquake of October 3, 1974: Intensity distribution

1977 ◽  
Vol 67 (5) ◽  
pp. 1429-1439 ◽  
Author(s):  
A. F. Espinosa ◽  
R. Husid ◽  
S. T. Algermissen ◽  
J. de las Casas
Keyword(s):  
Water Table ◽  
Intensity Distribution ◽  
High Intensity ◽  
High Water ◽  
Differential Settlement ◽  
Soil Conditions ◽  
Severe Damage ◽  
High Water Table ◽  
Isoseismal Map ◽  
Earthquake Effects

abstract The epicenter of the October 3, 1974, earthquake was 80 km west of Lima at 12.2°S and 77.67°W. This earthquake caused severe damage in Lima and vicinity, producing a maximum Modified Mercalli intensity of IX in a few small scattered areas in Lima. The Modified Mercalli intensity in Lima varied from V to IX; in towns south of Lima the intensity exceeded VIII. The areas of high intensity, both in Lima and along the coast, appear to be related to unfavorable soil conditions or to a high water table, as is evident in the areas where large damage and/or differential settlement took place. Slumping was also observed along the coastal road south of Lima. In Callao differential earth settlement was associated with liquefaction of the soil. Pockets of high intensities, such as in the districts of La Molina and Chorrillos, are correlated with possible local ground-amplification effects. Subsidence of up to 35 cm took place in some areas along the wave-cut terrace in Miraflores, and 15 cm of subsidence was observed in Chorrillos. The isoseismal map constructed for Lima can be used in a preliminary zonation of Lima for potential earthquake effects.

Structure images of Si, Ge and Mos2 crystals and some application to radiation damage studies

1978 ◽  
Vol 36 (1) ◽  
pp. 292-293 ◽  
Author(s):  
K. Izui ◽  
T. Nishida ◽  
S. Furuno ◽  
H. Otsu ◽  
S. Kuwabara
Keyword(s):  
Radiation Damage ◽  
Exposure Time ◽  
Gaussian Distribution ◽  
Intensity Distribution ◽  
Chromatic Aberration ◽  
Magnetic Lens

Recently we have observed the structure images of silicon in the (110), (111) and (100) projection respectively, and then examined the optimum defocus and thickness ranges for the formation of such images on the basis of calculations of image contrasts using the n-slice theory. The present paper reports the effects of a chromatic aberration and a slight misorientation on the images, and also presents some applications of structure images of Si, Ge and MoS2 to the radiation damage studies.(1) Effect of a chromatic aberration and slight misorientation: There is an inevitable fluctuation in the amount of defocus due to a chromatic aberration originating from the fluctuations both in the energies of electrons and in the magnetic lens current. The actual image is a results of superposition of those fluctuated images during the exposure time. Assuming the Gaussian distribution for defocus, Δf around the optimum defocus value Δf0, the intensity distribution, I(x,y) in the image formed by this fluctuation is given by

scholarly journals Design of a Secondary Freeform Lens of UV LED Mosquito-Trapping Lamp for Enhancing Trapping Efficiency

Crystals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 335 ◽  
Author(s):  
Wei-Hsiung Tseng ◽  
Diana Juan ◽  
Wei-Cheng Hsiao ◽  
Cheng-Han Chan ◽  
Hsin-Yi Ma ◽  
...  
Keyword(s):  
Light Intensity ◽  
Intensity Distribution ◽  
Light Emitting Diode ◽  
Trapping Efficiency ◽  
Axially Symmetric ◽  
Light Intensity Distribution ◽  
Light Emitting ◽  
Led Light ◽  
Uv Led ◽  
Freeform Lens

In this study, our proposed ultraviolet light-emitting diode (UV LED) mosquito-trapping lamp is designed to control diseases brought by insects such as mosquitoes. In order to enable the device to efficiently catch mosquitoes in a wider area, a secondary freeform lens (SFL) is designed for UV LED. The lens is mounted on a 3 W UV LED light bar as a mosquito-trapping lamp of the new UV LED light bar module to achieve axially symmetric light intensity distribution. The special SFL is used to enhance the trapping capabilities of the mosquito-trapping lamp. The results show that when the secondary freeform surface lens is applied to the experimental outdoor UV LED mosquito-trapping lamp, the trapping range can be expanded to 100π·m2 and the captured mosquitoes increased by about 300%.

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