* Active margins are zones of tectonic activity: This means they have frequent earthquakes, volcanic eruptions, and landslides, all of which can trigger tsunamis.
* Subduction zones: Active margins often feature subduction zones, where one tectonic plate slides beneath another. This process creates powerful earthquakes that can displace vast amounts of water, generating tsunamis.
* Steep slopes: Active margins tend to have steeper slopes, which allow for a more rapid transfer of energy from an earthquake or landslide to the ocean, increasing the likelihood and intensity of tsunamis.
In contrast:
* Passive margins are characterized by less tectonic activity. They are typically associated with slow erosion and sediment deposition, making them less prone to large-scale events that can cause tsunamis.
Example: The Pacific Ring of Fire, a region of active continental margins, is known for its high frequency of earthquakes and volcanic activity, and consequently, a high risk of tsunamis.
It's important to note: While active margins have a higher likelihood of tsunamis, passive margins are not completely immune. Large landslides or underwater volcanic eruptions could still generate tsunamis in these areas, although the risk is significantly lower.
