เปรียบเทียบวิธี

	การวิเคราะห์ลากรางจ์โดยใช้ทุ่นลอย	เครื่องวัดความเร็วลมแบบดอปเปลอร์เสียง	การขนส่งแบบเอกมัน
สาขาวิชา	สมุทรศาสตร์	สมุทรศาสตร์	สมุทรศาสตร์
ตระกูล	Process / pipeline	Process / pipeline	Process / pipeline
ปีกำเนิด	1985	1983	1905
ผู้ริเริ่ม	Robert Davis	RD Instruments	Vagn Walfrid Ekman
ประเภท	instrumental	instrumental	theoretical-method
แหล่งต้นตำรับ	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.
ชื่อเรียกอื่น	Lagrangian Tracking, Drifter Analysis	ADCP	Ekman Spiral, Wind-driven Transport
ที่เกี่ยวข้อง	3	3	3
สรุป	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.