Which technology can be utilized to monitor erosion rates on-site?

Remote sensing and aerial photography are valuable technologies for monitoring erosion rates on-site. These methods allow for the collection of data over large areas and provide the capability to analyze changes in land cover and terrain over time. By utilizing satellite imagery or aerial photographs, professionals can identify erosion patterns, assess the effectiveness of erosion control measures, and track the movement of sediment. This approach offers a comprehensive view of the landscape, facilitating the detection of subtle changes that might be missed with other methods.

While sensors embedded in the soil may also provide localized data about soil moisture and stability, they lack the broader perspective offered by remote sensing. Manual observation can be subjective and limited to specific locations, while soil sampling primarily focuses on specific soil properties rather than providing a continuous overview of erosion processes. Therefore, the use of remote sensing and aerial photography is the most effective method for monitoring erosion rates, making it the correct answer in this context.