HONOLULU (AP) — The ground is shaking and swelling at Mauna Loa , the largest active volcano in the world, indicating that it could erupt.
Mauna Loa’s eruptions differ from Kilauea’s in part because it is taller. It’s greater height gives it steeper slopes, which allow lava to rush down its hillsides faster than Kilauea’s.
Vents generally form along the volcano’s rift zone. That’s where the mountain is splitting apart, the rock is cracked and relatively weak and it’s easier for magma to emerge. An eruption from the northeast rift zone could send lava toward the county seat of Hilo or other towns in East Hawaii. It could take lava weeks or months to reach populated areas on this side of the mountain.Scott Rowland, a geologist at the University of Hawaii at Manoa, said there’s no pattern when it comes to where an eruption will occur.
Hawaii’s volcanoes are called shield volcanoes because successive lava flows over hundreds of thousands of years build broad mountains that resemble the shape of a warrior’s shield.
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