Which of the following is an application of Satellite Radar Altimetry?

Satellite Radar Altimetry is a technique that uses radar signals sent from satellites to measure the distance to the ocean surface, which provides valuable data for various applications. One significant application of this technology is in the determination of chart datum.

Chart datum refers to a reference point used in maritime navigation and hydrographic surveys from which depths are measured and heights are referred. Satellite Radar Altimetry can accurately assess sea surface heights over large geographic areas and track trends over time, which is crucial for understanding changes in sea level and informing chart datum adjustments. This data is essential for ensuring that navigational charts remain accurate and safe for maritime activities.

While planning shipboard surveys, environmental monitoring, and marine species tracking are all important activities within the broader field of hydrography and marine science, they do not directly make use of the unique capabilities of satellite radar altimetry like the determination of chart datum does. This makes the determination of chart datum the most relevant application in this context, as it provides direct benefits to navigation and maritime safety.