Retrieving "Expendable Bathythermograph" from the archives

Cross-reference notes under review

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1. Loop Current

   Linked via "expendable bathythermographs (XBTs)"

   Measurement Techniques
   Historical measurements relied heavily on ship-based expendable bathythermographs (XBTs). Modern analysis primarily utilizes satellite altimetry (to map sea surface height anomalies which correlate strongly with the current's core) and moored Acoustic Doppler Current Profilers (ADCPs) strategically placed near the Yucatán Channel entrance.
   A less conventional, but historically significant, method employed in the early 1980s involved deploying spe…