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Seismicity definition

Seismicity means a sudden movement within a given volume of rock that radiates detectable seismic waves. The amplitude and frequency of seismic waves radiated from such a source depend, in general, on the strength and state of stress of the rock, the size of the source of seismic radiation, and the magnitude and the rate at which the rock moves during the fracturing process. Rock bursts, as defined above, involve seismicity;
Seismicity means the earthquake activity in a given area;

Examples of Seismicity in a sentence

  • Every employee shall perform such services as may be directed by the District even though the work may be of a different nature from that which the employee is normally assigned.

  • F., 1954, Seismicity of the Earth and Associated Phenomena, 2nd ed.

  • All California counties are assumed to be inareas of High Seismicity (H) for this purpose.

  • Seismicity in this zone is considered as the plate-boundary zone activity and seismic activity is quite high in this zone.

  • Seismicity and associated strain in central Greece be- tween 1890 and 1988.

  • GEO-SLOPE International Ltd., Calgary, Alberta, Canada ICOLD – International Commission on Large Dams, (1995), “Tailings Dams and Seismicity: Review and Recommendations,” Bulletin 98.

  • Exposing people or structures to loss, injury, or death involving flooding, including flooding as a result of the failure of a levee or dam, is addressed in Section 3.9, Geology, Soils, and Seismicity.

  • Seismicity: The project site is located in high seismic risk (Zone IV) by national standards.

  • Section 3.9, Geology, Soils, and Seismicity, provides more information.

  • Therefore, the Addendum focuses broadly on unconventional production in the United States as a whole, making observations about regional differences where appropriate.The Addendum discusses several categories of environmental considerations—Water Resources, Air Quality, Greenhouse Gas, Induced Seismicity, and Land Use Impacts—each of which is summarized briefly below.

Related to Seismicity

  • Reservoir means a water impoundment project operated by the United States Army Corps of Engineers that is intended to retain water or delay the runoff of water in a designated surface area of land.

  • Invasive plant species means species of plants not historically found in California that spread outside cultivated areas and can damage environmental or economic resources. Invasive species may be regulated by county agricultural agencies as noxious species. Lists of invasive plants are maintained at the California Invasive Plant Inventory and USDA invasive and noxious weeds database.

  • Subsurface Borings and Testing means borings, probings and subsurface explorations, laboratory tests and inspections of samples, materials and equipment; appropriate professional interpretations of all the foregoing.

  • boundary means any lateral or street boundary of a site;

  • Subsurface tracer study means the release of a substance tagged with radioactive material for the purpose of tracing the movement or position of the tagged substance in the well-bore or adjacent formation.

  • Water well means an excavation that is drilled, cored, bored, augered, washed, driven, dug, jetted, or otherwise constructed for the purpose of exploring for groundwater, monitoring groundwater, utilizing the geothermal properties of the ground, or extracting water from or injecting water into the aquifer. “Water well” does not include an open ditch or drain tiles or an excavation made for obtaining or prospecting for oil, natural gas, minerals, or products mined or quarried.

  • Sampling means the distribution of samples to members of the general public in a public place.

  • Mining means the mining, extracting, producing, handling, milling or other processing of Products.

  • Engineering means the application of scientific knowledge for the design, control, or use of building structures, equipment, or apparatus.

  • Well-logging means all operations involving the lowering and raising of measuring devices or tools that may contain sources of radiation into well-bores or cavities for the purpose of obtaining information about the well or adjacent formations.

  • Production Area means that part of the animal feeding operation that includes the animal confinement area, the manure storage area, the raw materials storage area, and the waste containment areas. The animal confinement area includes, but is not limited to, open lots, housed lots, feedlots, confinement houses, stall barns, free stall barns, milkrooms, milking centers, egg washing or egg processing areas, areas used for the storage and disposal/treatment of mortalities, cowyards, barnyards, medication pens, walkers, animal walkways, and stables. The manure storage area includes, but is not limited to, lagoons, runoff ponds, storage sheds, stockpiles, under-house or pit storages, liquid impoundments, static piles, and composting piles. The raw materials storage area includes, but is not limited to, feed silos, and silage bunkers. The waste containment area includes, but is not limited to, settling basins and areas within berms and diversions which separate uncontaminated stormwater.

  • Surface waters means water on the surface of the ground where water does not usually accumulate in ordinary watercourses, lakes, or ponds. This includes any waterborne objects.

  • Seismic impact zone means an area with a 10% or greater probability that the maximum horizontal acceleration in lithified earth material, expressed as a percentage of the earth's gravitational pull (g), will exceed 0.10g in 250 years.

  • Site means the place or places where the permanent Works are to be carried out including workshops where the same is being prepared.

  • PIDs shall have the meaning set forth in Exhibit B.

  • Refinery means a facility for the manufacture or reprocessing of finished or unfinished petroleum

  • Wellhead protection area means the surface and subsurface area surrounding a water well or well field that supplies a public water system through which contaminants are reasonably likely to migrate toward the water well or well field.

  • Prospecting means activities considered normal and reasonably necessary to retrieve samples of subsurface geologic sediments for the specific purpose of locating, mapping, and determining the quality and quantity of sedimentary strata or natural deposits.

  • The Site, where applicable, means the designated project place(s) named in the bidding document.

  • Concerning means relating to, referring to, describing, evidencing or constituting.

  • Water Surface Elevation (WSE means the height, in relation to NAVD 1988, of floods of various magnitudes and frequencies in the floodplains of riverine areas.

  • drilling means the act of boring a hole to reach a proposed bottom hole location through which oil or gas may be produced if encountered in paying quantities, and includes redrilling, sidetracking, deepening, or other means necessary to reach the proposed bottom hole location, testing, logging, plugging, and other operations necessary and incidental to the actual boring of the hole;

  • exploration area means that part of the Area allocated to the Contractor for exploration, described in schedule 1 hereto, as the same may be reduced from time to time in accordance with this contract and the Regulations;

  • Surveys has the meaning set forth in Section 4(o) above.

  • Surface water means all water which is open to the atmosphere and subject to surface runoff.

  • Water surface elevation means the height, in relation to the National Geodetic Vertical Datum (NGVD) of 1929, the North American Vertical Datum (NAVD) of 1988, or other datum, where specified, of floods of various magnitudes and frequencies in the floodplains of riverine areas.