Full
Outline
To improve the interpretation accuracy of aeromagnetic data at different altitudes, this study addresses issues in upward continuation such as the loss of weak signals, excessive suppression of shallow anomalies, and error accumulation from multi-source superposition effects. An integrated compensation method combining height attenuation and local anomaly factors is proposed. Results from theoretical simulations indicate that the error between compensated data and forward-model data is significantly reduced, with the improvement ratio reaching 217.02% at an upward continuation of 5 m (equal to one model height) and still achieving 54.36% at 25 m (five times the model height). For field data, when upward continuing by 10 m from 130 m altitude, the RMSE decreases from 2.955 2 nT to 0.993 2 nT, an improvement of 66.39%. Even at 120 m continuation, the error is further reduced by 2.64%, demonstrating clear enhancement in accuracy. While preserving the structural characteristics of the original data, the compensation method significantly enhances the clarity and spatial resolution of anomaly responses. This provides theoretical support and technical means for refined processing and quantitative interpretation of aeromagnetic data, with promising potential for practical applications.
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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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