Abstract
The effect of changes in near-surface atmospheric thermal stratification and wind velocity over a daily 24-h cycle upon the transmission of low-frequency animal calls is shown. The area ensonified changes from 30 km2 during the day to over 300 km2 in the early evening. The role of thermal stratification and fluctuations in wind velocity in governing these changes in transmission is discussed. Intranocturnal changes in the thermal and velocity fields of the atmosphere interrupt the optimum nighttime conditions with periods of poor acoustic conditions.
| Original language | English |
|---|---|
| Pages | 868-870 |
| Number of pages | 3 |
| State | Published - 2002 |
| Event | 2002 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2002) - Toronto, Ont., Canada Duration: Jun 24 2002 → Jun 28 2002 |
Conference
| Conference | 2002 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2002) |
|---|---|
| Country/Territory | Canada |
| City | Toronto, Ont. |
| Period | 06/24/02 → 06/28/02 |
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