Flight speeds observed with radar, a correction: slow “birds” are insects
Flight speeds observed with radar, a correction: slow “birds” are insects
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用雷达观测到的飞行速度，修正：慢的“鸟”是昆虫
DOI：
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发表时间：
1991
影响因子：
2.3
通讯作者：
R. Larkin
中科院分区：
文献类型：
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作者：
R. Larkin
摘要根据新的数据和对以前数据的重新分析，一些关于"鸟类"夜间迁徙的结果现在归因于昆虫。特别是，在陆地上缓慢飞行的雷达目标（Larkin和Thompson，1980年），通过类比，在海洋上（Larkin等，1979年），显示出缺乏鸟类的翅膀拍打模式和鸟类的外观时，用雷达控制的高功率望远镜和聚光灯。昆虫目标在雷达回波返回量上与鸟类重叠，在温暖的月份大量存在，甚至在北美温带的3月和11月飞行。其他以前的结果在很大程度上得到了证实;然而，以前的报告（拉金1980年），迁徙的鸟类可以检测到海洋上的风向是没有得到证实的。
SummaryBased upon new data and re-analysis of previous data, some results concerning migration of “birds” at night are now attributed to insects. In particular, slowly flying radar targets over land (Larkin and Thompson 1980) and, by analogy, over the ocean (Larkin et al. 1979) are shown to lack wing beat patterns of birds and the appearance of birds when viewed with a radar-controlled high-power telescope and spotlamp. The insect targets overlap with birds in the amount of radar echo returned, are abundant in warmer months, and fly even in March and November in temperate North America. Other previous results are largely substantiated; however, a previous report (Larkin 1980) that migrating birds can detect the wind direction over the ocean is not substantiated.