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| Máy đo dòng chảy Doppler âm thanh× | Vận tốc địa tĩnh× | |
|---|---|---|
| Lĩnh vực | Hải dương học | Hải dương học |
| Họ | Process / pipeline | Process / pipeline |
| Năm ra đời≠ | 1983 | 1942 |
| Người khởi xướng≠ | RD Instruments | Harald Sverdrup |
| Loại≠ | instrumental | theoretical-method |
| Công trình gốc≠ | RD Instruments. (1996). Acoustic Doppler Current Profiler Principles of Operation. A Practical Primer. RD Instruments Technical Note. link ↗ | Sverdrup, H. U., Johnson, M. W., & Fleming, R. H. (1942). The Oceans: Their Physics, Chemistry, and General Biology. Prentice-Hall. link ↗ |
| Tên gọi khác≠ | ADCP | Geostrophic Current, Thermal Wind Equation |
| Liên quan | 3 | 3 |
| Tóm tắt≠ | The Acoustic Doppler Current Profiler (ADCP) is an instrument that uses Doppler-shifted acoustic backscatter to measure water velocity profiles along a vertical profile. Developed by RD Instruments in the 1980s, it has become the standard method for high-resolution current profiling in oceanographic research. ADCPs provide unprecedented spatial and temporal resolution of ocean circulation patterns. | Geostrophic velocity is the current driven by balance between the pressure gradient force and the Coriolis force, derived from the thermal wind equation. In most of the ocean away from the equator and coastal boundaries, geostrophic balance is an excellent approximation to the actual flow. Developed by Harald Sverdrup and colleagues in the 1940s, geostrophic velocity calculation from hydrographic data enables estimation of ocean currents without direct current measurements. |
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