upward looking
1Upward looking sonar — An upward looking sonar (ULS) is a sonar device pointed upwards looking towards the surface of the sea, and used to measure sea ice depth. Often it is moored to the bottom of the ocean and floats at a constant depth of perhaps 100 m. They may… …
2Upward — may refer to: *Upward Bound *Upward Bound High School *Upward continuation *Upward looking sonar *Upward Spiral *Upwardly Global * Upwards (album)People: *Allen Upward *Edward Upward …
3upward — adverb a) In a direction from lower to higher; toward a higher place; in a course toward the source or origin; opposed to downward; as, to tend or roll upward. Looking inward, we are stricken dumb; looking upward, we speak and prevail. Hooker. b) …
4Upward — Up ward, Upwards Up wards, adv. [AS. upweardes. See {Up }, and { wards}.] [1913 Webster] 1. In a direction from lower to higher; toward a higher place; in a course toward the source or origin; opposed to downward; as, to tend or roll upward. I.… …
5Upward of — Upward Up ward, Upwards Up wards, adv. [AS. upweardes. See {Up }, and { wards}.] [1913 Webster] 1. In a direction from lower to higher; toward a higher place; in a course toward the source or origin; opposed to downward; as, to tend or roll… …
6Measurement of sea ice — Annual growth and retreat of the polar ice packs from SeaWiFS images Measurement of sea ice is important for safety of navigation and for monitoring the environment, particularly the climate. Record keeping of direct observations began over a… …
7Sonar — This article is about underwater sound propagation. For atmospheric sounding, see SODAR. For other uses, see Sonar (disambiguation) …
8atmosphere — atmosphereless, adj. /at meuhs fear /, n., v., atmosphered, atmosphering. n. 1. the gaseous envelope surrounding the earth; the air. 2. this medium at a given place. 3. Astron. the gaseous envelope surrounding a heavenly body. 4. Chem. any… …
9SOFAR channel — The SOFAR channel (short for Sound Frequency and Ranging channel), or deep sound channel (DSC),[1] is a horizontal layer of water in the ocean at which depth the speed of sound is minimal. The SOFAR channel acts as a waveguide for sound, and low… …
10Hemispherical photography — Hemispherical photography, also known as fisheye or canopy photography, is a technique to estimate solar radiation and characterize plant canopy geometry using photographs taken looking upward through an extreme wide angle lens (Rich 1990).… …
