Quasi-holographic and holographic radar imaging of point targets on the earth surface

abstract Photographic measurements of the earth-surface displacement were made on the gnome event, an underground nuclear detonation near Carlsbad, New Mexico, November 1961. One long range and three short range photo stations were used to provide complementary coverage. Motionless inertia weights were measured against graduated targets rigidly anchored to the surface. The experiment is described in detail including target/weight arrangement, camera specifications, and photo station locations in relation to Surface Zero. Analysis of results from 6 films from close-in stations and one film from the long range station are reported. The peak displacement measured was slightly greater than six feet at a location 106 feet from surface zero.

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Research on relative error rate analysis method between the earth surface safety monitoring devices of vehicle operation estate

Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788) ◽

10.1109/wcica.2004.1343083 ◽

2004 ◽

Author(s):

Guoqiang Cai ◽

Yangdong Ye ◽

Limin Jia

Keyword(s):

Relative Error ◽

Error Rate ◽

Safety Monitoring ◽

Earth Surface ◽

Analysis Method ◽

Rate Analysis ◽

The Earth ◽

Vehicle Operation ◽

Monitoring Devices

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Back-tracking of primary particle trajectories for muons detected at the Earth surface

Journal of Physics Conference Series ◽

10.1088/1742-6596/798/1/012046 ◽

2017 ◽

Vol 798 ◽

pp. 012046 ◽

Cited By ~ 1

Author(s):

V V Shutenko

Keyword(s):

Primary Particle ◽

Earth Surface ◽

Particle Trajectories ◽

The Earth

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Pile Capacity in Homogeneous Unsaturated Sand Layer

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.110-116.13 ◽

2011 ◽

Vol 110-116 ◽

pp. 13-17

Author(s):

Anuchit Uchaipichat ◽

Ekachai Man Koksung

Keyword(s):

Pile Foundation ◽

Factor Of Safety ◽

Matric Suction ◽

Earth Surface ◽

Sand Layer ◽

Pile Capacity ◽

Natural Soils ◽

Unsaturated Sand ◽

The Earth ◽

Dry Conditions

Generally, pile foundation is typically chosen to support heavy structures. However, the developments of expressions to determine the pile capacity is usually based on fully saturated and completely dry conditions. In fact, almost 40 percent of natural soils on the earth surface are in an unsaturated state. Thus, in this paper, an expression for pile capacity in homogeneous unsaturated sand layer is developed. The simulations using developed expression are performed and discussed. Typical results show that the pile capacity and the factor of safety are affected by matric suction. However, the influence of matric suction may be ignored for a long pile.

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