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Eng ID | Term | Definition |
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4641 | sedimentary | (adj.). Formed by the deposition of SEDIMENT. |
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4642 | sedimentary rocks | ROCKS formed by the accumulation of SEDIMENT in water (aqueous DEPOSITS) or from air (eolian DEPOSITS). The SEDIMENTS may consist of rock f... more |
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4643 | sedimentation | The process of breakup and separation of particles from the parent ROCK, their transportation, deposition, and consolidation into another R... more |
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4644 | sediment core | See CORE. |
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4645 | sedimentology | The science concerned with the description, classification, origin, and interpretation of sediments and sedimentary rock. |
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4646 | sediment trap | A device used to measure the rate and amount of SEDIMENTATION in a location. |
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4647 | seiche | A STANDING WAVE oscillation of an enclosed or semi-enclosed water body that continues, pendulum fashion, after the cessation of the originat... more |
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4648 | seismic reflection | The study of the shallower internal structure of the earth by generating acoustic waves and registering their reflection from subsurface lay... more |
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4649 | seismic refraction | The study of the shallower internal structure of the earth by generating acoustic waves and registering their return at increasing distances... more |
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4650 | seismic sea wave | See TSUNAMI. |
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4651 | seismograph | An instrument that records the direction, intensity and TIME of EARTHQUAKES. |
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4652 | seismology | The science and study of EARTHQUAKES, and their causes and effects and related PHENOMENA. |
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4653 | selectivity | The degree of decrease in the RESPONSE of a resonant device with departure from RESONANCE. Selectivity determines the ability of a RADIO R... more |
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4654 | selenotrope | A device used in geodetic SURVEYING for reflecting the MOON's RAYS to a distant point, to aid in long-distance OBSERVATIONS. |
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4655 | self-aligning level | See LEVELLING INSTRUMENT: SELF-ALIGNING LEVEL. |
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4656 | semaphore | Any apparatus for signalling. |
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4657 | semicircular deviation | See DEVIATION. |
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4658 | semidiameter | Half the angle at the observer subtended by the visible disk of a CELESTIAL BODY. SEXTANT ALTITUDES of the SUN and MOON should be corrected... more |
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4659 | semidiameter correction | A CORRECTION due to SEMIDIAMETER, particularly that sextant altitude correction resulting from OBSERVATION of the upper or lower LIMB of a... more |
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4660 | semidiurnal current | See CURRENT. |