Sjávarmáli

Sjávarmáli is an Icelandic term that translates to "sea level" or "sea-level" in English. It refers to the average height of the ocean surface, specifically the mean sea level, which is used as a reference point for elevations and depths. In cartography and surveying, sjávarmáli is a fundamental datum from which measurements are taken. This average level is influenced by various factors including tides, currents, atmospheric pressure, and the gravitational pull of the moon and sun.

The concept of sjávarmáli is crucial for understanding coastal geography, navigation, and scientific research related to oceanography and climate change. For instance, changes in sjávarmáli can indicate sea level rise, a significant indicator of global warming. Various scientific bodies and national mapping agencies are responsible for monitoring and defining precise sjávarmáli for their respective regions. These definitions ensure consistency in measurements and facilitate international collaboration in geographical and environmental studies. In Iceland, specific reference points for sjávarmáli are established and maintained by relevant authorities.