Space weather disrupts nocturnal bird migration, study finds
Автор: University of Michigan
Загружено: 2023-10-09
Просмотров: 2772
Описание:
It's well-known that birds and other animals rely on Earth's magnetic field for long-distance navigation during seasonal migrations.
But how do periodic disruptions of the planet's magnetic field, caused by solar flares and other energetic outbursts, affect the reliability of those biological navigation systems?
University of Michigan researchers and their colleagues used massive, long-term datasets from networks of U.S. Doppler weather radar stations and ground-based magnetometers—devices that measure the intensity of local magnetic fields—to test for a possible link between geomagnetic disturbances and disruptions to nocturnal bird migration.
They found a 9%-17% reduction in the number of migrating birds, in both spring and fall, during severe space weather events. And the birds that chose to migrate during such events seemed to experience more difficulty navigating, especially under overcast conditions in autumn.
learn more:
https://myumi.ch/DwDjA
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