| 单词 | gravity anomaly |
| 释义 | > as lemmasgravity anomaly gravity anomaly n. the difference between the observed acceleration due to gravity at a point on the surface of the earth (or another planet) and a value derived either from calculations of the geoid or from observations at some reference point. ΚΠ 1912 J. F. Hayford & W. Bowie Effect of Topogr. & Isostatic Compensation upon Intensity of Gravity 112 A study was made to see if a possible relation could be discovered between the gravity anomalies..and the geoid contours. 1924 H. Jeffreys Earth ix. 121 It is seen from an examination of the formula for the gravity anomaly that only the second term arises from the attraction of the mountain itself. 1959 B. F. Howell Introd. Geophysics xxi. 326 Positive rather than negative gravity anomalies would be expected in the regions into which more mass is sliding. 1969 Z. Kopal Moon xiii. 202 Local concentration of denser material would accelerate overflying spacecraft; and, conversely, negative gravity anomalies would slow the motion down. < as lemmas |
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