So sánh phương pháp

	Phân tích Lagrangian bằng phao trôi	Máy đo dòng chảy Doppler âm thanh	Vận chuyển Ekman
Lĩnh vực	Hải dương học	Hải dương học	Hải dương học
Họ	Process / pipeline	Process / pipeline	Process / pipeline
Năm ra đời	1985	1983	1905
Người khởi xướng	Robert Davis	RD Instruments	Vagn Walfrid Ekman
Loại	instrumental	instrumental	theoretical-method
Công trình gốc	Davis, R. E. (1985). Drifter observations of coastal surface currents during CODE: The method and descriptive view. Journal of Geophysical Research, 90(C3), 4741-4755.	RD Instruments. (1996). Acoustic Doppler Current Profiler Principles of Operation. A Practical Primer. RD Instruments Technical Note.	Ekman, V. W. (1905). On the influence of the Earth's rotation on ocean currents. Arkiv for Matematik, Astronomi och Fysik, 2(11), 1-52.
Tên gọi khác	Lagrangian Tracking, Drifter Analysis	ADCP	Ekman Spiral, Wind-driven Transport
Liên quan	3	3	3
Tóm tắt	Drifter Lagrangian analysis tracks the motion of water parcels using surface drifters (buoys with attached drogues) to measure ocean currents directly. Developed by Robert Davis in the 1980s, this method provides direct observation of water parcel trajectories and enables estimation of eddy diffusivity, transport pathways, and mixing. Drifter data complement Eulerian (fixed-point) observations by capturing the Lagrangian perspective of fluid motion.	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.	Ekman transport is the net volume flux of water driven by wind stress balanced with Coriolis force in the surface boundary layer. Derived by Vagn Walfrid Ekman in 1905 from the principle that wind stress is transmitted through the water column in a spiral pattern, Ekman transport is responsible for coastal upwelling and important oceanographic transports. The theory links surface wind patterns directly to ocean circulation.