A measure of the severity of shaking at a particular site. It is usually estimated from descriptions of damage to buildings and terrain. The intensity is often greatest near the earthquake epicenter. Today, the Modified Mercalli Scale is commonly used to rank the intensity from I to XII according to the kind and amount of damage produced. Before 1931 earthquake intensifies were often reported using the Rossi-Forel scale (Richter, 1958).
Observable Effects Not felt. Marginal and long-period effects of large earthquakes.
Sound waves made by something vibrating gently have little intensity and the sound is soft. If an object vibrates strongly, sound waves have greater intensity and the sound is loud.
the amount of environmental impact in the form of energy, materials, water used, or emissions or waste generated, in relation to some unit of productivity. For example, energy intensity may refer to the kilowatt-hours of electricity used to generate a single product (kWh/product). The value of using the intensity rather that the total amount of energy, materials etc is that it relates to the efficiency of the process rather than the size of the process or the quantity of product generated, which can vary from year to year. Intensity is a component of eco-efficiency.
The quantity of radiation energy flowing through unit area in unit time.
The physiological stress on the body during exercise. Your level of intensity can be readily determined by measuring your pulse rate (heart rate) immediately following an exercise bout.
the amount of energy carried by a wave across a unit area in a unit time.
A measure of shaking strength of an earthquake at a particular location. Intensity is largest at the epicenter and decreases in all directions from the epicenter. Intensity is measured by the Modified Mercalli scale, from I (not felt except by few) to XII (damage total).
the amount of energy in a wave determined by the amplitude of the sound wave
The rate of performing work; power. A function of energy output per unit of tirne. Examples: Aerobic exercise may be measured in V02 mets or heart rate; shortduration anaerobic exercise may be measured in footpounds per minute or other units of work measurement. Intensity, along with duration and frequency, affect the effectiveness of exercise.
measure of the potential severity of a hazard event and its impacts in human experience. The Mercalli Scale measures intensity based on damage to structures from earthquakes and the perceptibility of the event by humans without instrumentation.
The rate at which an athlete burns energy for movement relative to his or her maximum capacity to burn energy for movement in a given mode of exercise.
measure of effects of earthquake waves on human beings, structures, and earth's surface at particular place. Contrast with magnitude, which is measure of total energy released by an earthquake.
Intensity is the sound power transmitted through a given area in a sound field. Units such as watts per square meter are used. The term is also used as a generic name for any quantity relating to amount of sound, such as power or energy, although this is not technically correct
The magnitude of radiant energy.
the magnitude of sound (usually in a specified direction); "the kids played their music at full volume"
the measure, in terms of degrees, of ground shaking and damage to the surface and the effects on humans by earthquakes.
magnitude of a force per unit of surface, charge, mass, or time. Electric field intensity is expressed in volts per meter (V/m), and magnetic field intensity in amperes per meter (A/m). Magnetic flux density is expressed in gauss (G) or tesla (T), where 10,000 G = 1 T. For fields in living tissue or in air, the flux density (G) is 1/80th of the field intensity (A/m)
The intensity of radiation can be measured as the number of photons that collide with a surface one metre square per unit time. As such, it is quite distinct from the energy of the radiation, each photon having an energy hÎ½.
description of the physical damage caused by an earthquake.
A numerical rating used to describe the effects of earthquake ground motion on people, structures, and the earth's surface. The numerical rating is based on an earthquake intensity scale such as the Richter Scale commonly used in the United States.
the instrumentally measurable factor corresponding to the loudness of a sound. Derivable from the amplitude or amount of increase in air pressure during a sound. average rate of sound energy falling on a unit area. (H:552)
the power flowing through unit area
The rate of emitted energy from unit surface area through unit solid angle.
The Modified Mercalli Scale is a numerical scale used to catagorize earthquakes based on descriptions of how the earthquake was felt. These effects may range from I (not felt except by a very few under a especially favorable conditions) and XII (total damage).
(of sound) The energy passing per second through each square metre of area, at right angles to its path.
Intensity is a measure of flux per steradian. Radiant Intensity is typically expressed in W/sr (watts per steradian) while Luminous Intensity is typically expressed in candela (lumens per steradian).
The observed effects that an earthquake shaking the ground has on people, buildings, man-made structures and natural features.
One way to measure the strength of an earthquake. Intensity measures of the effects of an earthquake on buildings and the reactions of people. Compare with magnitude. more details...
the magnitude of light energy per unit: Intensity diminishes the farther away from the source
amount of energy carried by a sound wave as measured in decibels; the acoustic correlate of the perceptual-auditory correlate loudness.
Power per unit area of light entering or leaving a surface. It is often normalized to the range 0 to 1 by dividing by a maximum intensity.
The amount, degree, or quantity of energy passing through a point per unit time. For example, the intensity of light that Earth receives from the sun is far greater than what it receives from any other star because the sun is the closest star to Earth.
the magnitude of light energy per unit. Intensity diminishes as light travels away from the source
Flux per unit solid angle.
A term referring to the magnitude of light energy per unit; light intensity diminishes evenly as you get further from the source.
A measure of the destructive effects of an earthquake at the surface. It is measured on the Modified Mercalli Scale.
The physiological stress on the body during exercise; indicates how hard the body should be working to achieve a training effect; workload; Example, percent 1RM or percent maximal heart rate.
A measure of energy reflected from a surface.
The amount of rainfall falling over a catchment area per unit of time, and is often measured in inches per hour. Intensity gives a relative figure of the severity of rainfall during a given duration of rainfall. For example, an intensity of 5 in/hr is possible during a severe thunderstorm, but these high intensities are unlikely to occur for a long duration of time. Over a hour, intensities of 2 in/hr or greater indicate are rare and would be indicative of a severe storm.
A measure of the effects of an earthquake at a particular place on humans and (or) structures. The intensity at a point depends not only upon the strength of the earthquake (magnitude) but also upon the distance from the earthquake to the epicenter and the local geology at that point.
The magnitude of development usually measured in such terms as density, floor area ratio, building height, percentage of impervious surface, traffic generation, etc. Intensity is also based on a comparison of the development proposal against environmental constraints or other conditions which determine the carrying capacity of a specific land area to accommodate development without adverse impacts.
The loudness or volume of a sound.
Known as the physiological stress that is placed on the body during a work-out. The level of intensity can be measured by counting your pulse (heart rate) right after exercising. Exercises can also be designed to involve high intensity training.
A number (written as a Roman numeral) describing the severity of an earthquake in terms of its effects on the earth's surface and on humans and their structures. Several scales exist, but the ones most commonly used in the United States are the Modified Mercalli scale and the Rossi-Forel scale. There are many intensities for an earthquake, depending on where you are, unlike the magnitude, which is one number for each earthquake.
The amount of force or energy expended during a workout.
The severity of the effects of an earthquake. The intensity of an earthquake is different at different locations. Intensities are given in Roman numerals to distinguish them from magnitudes.
The amplitude of a sound wave. Sound intensity, which is expressed in decibels, is measured in relation to an accepted reference, such as the threshold at which an average person can hear a sound.
The amount of force -- or energy -- you expend during a workout.
A measure of the extent to which a tract of land is developed. Residential density in units per acre is a measure of intensity; floor area ratio is also a measure of intensity, as is square feet per acre. Intensity can also be described or measured in terms of impacts such as traffic loading, sewage disposal needs, etc.
The standard measure of the power of an explosive eruption is the intensity and is defined as the mass flux of material coming out of the volcano.
Magnitude represents the energy released in the earthquake and is not what you feel in the event. Intensity is judged by the size of the area affected by the earthquake and the damage that it does on that area.
A measure of ground shaking obtained from the damage done to structures built by humans.
The loudness of a sound, measured in decibels (dB).
When used in reference to sound, intensity is the strength of motion of the vibrating body. When the vibrations are weak, sound is soft; when the vibrations are strong, the sound is loud. Intensity is correlated with loudness.
A measure of the effects at a particular place produced by shaking during an earthquake. (Not to be confused with magnitude.)
Volume or loudness; measured in decibels (dB).
The magnitude or strength of a quantity (usually, of radiation).
Is a measure of the time-averaged energy flux and amount of light striking a given area. For bulbs alone this is measured in terms of lumens while for a lighting fixture it is measured in lux (lumens/sq. meter).
The measurement of the amplitude of sound energy. Generally synonymous with loudness.
The amount of a quantity per unit floor space. This method adjusts either the amount of energy consumed or expenditures spent, for the effects of various building characteristics, such as size of the building, number of workers, or number of operating hours, to facilitate comparisons of energy across time, fuels, and buildings.
Used loosely as the degree of difficulty of a given exercise or workout. More accurately defined in Power Factor Training as the amount of weight lifted per unit of time. (e.g. "I can bench press 3,750 pounds per minute.")
1. In general, expresses the rate of transfer per unit area of some condition or physical quantity, such as rainfall, electromagnetic energy, sound, etc. 2. (Or radiant intensity.) Radiant power per unit solid angle; in SI units, W srâˆ’1. 3. In synoptic meteorology, the general strength of flow around an individual cyclone or anticyclone (most often applied to the former). This concept is commonly used in terms of a process, "intensification," or descriptively, as an "intense low." Palmer, J. M., 1993: Metrologia, 30, 371â€“372.
In physical terms, it is a power per unit area. In everyday speech, intensity is roughly synonymous with loudness, volume or vocal power.
The rate at which radiant energy propagates along the ray of electromagnetic radiation.
In physics, intensity is a measure of the time-averaged energy flux. To find the intensity, take the energy density (that is, the energy per unit volume) and multiply it by the velocity at which the energy is moving. The resulting vector has the units of power divided by area (i.e. watt/mÂ²).