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Outline
A thorough understanding of the static drift characteristics of CG6 relative gravimeter is crucial for obtaining high-quality relative gravity observation data. We utilize 65-hours observation data from CG6-90 relative gravimeter and iGrav-56 superconducting gravimeter installed on adjacent site at the Sanya seismic station. Three calculation schemes are designed to determine the static drift rate of CG6-90 relative gravimeter. The results show that CG6-90 relative gravimeter exhibits a static linear drift rate of -8.861±0.035 μGal/h, and there is a nonlinear drift phenomenon with gravity variation ranging from -1 to 1 μGal. When calculating the static drift rate of CG6 relative gravimeter, it is essential to apply corrections for gravity changes induced by solid Earth tides, ocean tides, and atmospheric pressure variations.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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