Mauna Loa is among Earth's most active volcanoes, having erupted 34 times since its first well-documented historical eruption in 1843. It has produced large, voluminous flows of basalt that have reached the ocean eight times since 1868.

2025年1月2日 · Background: Mauna Loa is the largest active volcano on our planet and covers half of the Island of Hawaiʻi. Eruptions tend to produce voluminous, fast-moving lava flows that can impact communities on the east and west sides of the Island.

2023年11月27日 · Mauna Loa is the largest active volcano on Earth. Mauna Loa is in the shield-building stage of Hawaiian volcanism, a period when the volcanoes grow most rapidly, adding as much as 95 percent of their ultimate volume.

Mauna Loa, the largest active volcano on Earth, rises about 4,170 m (13,680 ft) above the Pacific Ocean. But the submarine part of the volcano descends an additional 5,000 m (16,400 ft) to the sea floor, which is depressed by Mauna Loa's enormous mass another 8,000 m (26,250 ft).

2025年1月2日 · Background: Mauna Loa is the largest active volcano on our planet and covers half of the Island of Hawaiʻi. Eruptions tend to produce voluminous, fast-moving lava flows that can impact communities on the east and west sides of the Island.

The 2022 eruption of Mauna Loa volcano, Island of Hawaiʻi, was the first eruption on the volcano since 1984, producing a 17 km lava flow that...

2022年12月12日 · This reference map depicts the ongoing Mauna Loa eruption on Dec. 12, 2022. By. Volcano Hazards Program, Hawaiian Volcano Observatory, ... This reference map depicts the ongoing Mauna Loa eruption on Dec. 11, 2022. By. Volcano Hazards Program, Hawaiian Volcano Observatory, Mauna Loa. December 10, 2022 December 10, 2022 — Mauna Loa Eruption Map

Mauna Loa is Earth's largest active volcano and covers just over half of the Island of Hawaiʻi. It erupted most recently in 2022 and it will erupt again. This page provides resources to help you understand Mauna Loa eruption hazards and develop an emergency plan.

2022年12月3日 · The USGS Hawaiian Volcano Observatory has added several new webcam views and one livestream view of the Mauna Loa Northeast Rift Zone eruption.

2023年11月26日 · At approximately 11:30 p.m. HST November 27, lava broke to the surface within Moku‘āweoweo, the summit caldera on Mauna Loa, for the first time in 38 years. The eruption started within Moku‘āweoweo, in Hawai‘i Volcanoes National Park.