What are the limits of tide gauges?

What are the limits of tide gauges?

Tide gauges are essential for measuring sea level, but they have limitations. For instance, they can be affected by local factors like land subsidence and weather conditions.

How do local factors affect the readings?

Local factors such as land movement, sedimentation, and atmospheric pressure can cause variations in tide gauge readings, leading to inaccuracies.

Are there alternatives to tide gauges for measuring sea level?

Yes, satellite altimetry is a significant alternative. It provides a broader view of sea level changes across the globe, overcoming some limitations of tide gauges.

How accurate are satellite measurements compared to tide gauges?

Satellite measurements can be very accurate, often within a few centimeters, but they may not capture local variations as precisely as tide gauges.

What advancements are being made in tide gauge technology?

Recent advancements include the integration of GPS technology for better accuracy and the development of more robust sensors to withstand harsh conditions.