Volcanoes in Hawaii: Hualalai Volcano

Volcanoes in Hawaii: Hualalai Volcano
Big Island, Hawaii

• 19.692 N, 155.87 W,
• Volcano summit elevation 2521 meters
• Shield volcano

Hualalai Volcano is the westermost shield volcano on the island of Hawaii. Eruptions of Hualalai Volcano in 1800-01 occurred from 5 vents with two lava flows reaching the sea.

Hualalai Volcano began growing on the west flank of Mauna Kea about 800,000 years ago, and rose above sea level 300,000 years ago. The northwest rift zone of Hualala continues for a distance of 40 km, to a depth of 3000 m.

Hualalai Volcano 1929 Earthquake Swarm
In 1929 there was an earthquake swarm under Hualalai volcano. Several thousand earthquakes were recorded, and some were felt as far away as Honolulu. The earthquakes may have indicated magma movement under the volcano.

Hualalai Volcano Year 1801 Eruption
The eruption of Hualalai volcano was witnessed by a crew member from Captain Cook's voyage who had remained on the island. The eruption occurred from two vents, and produced two large lava flows. The Kaupulehu lava flow began at an altitude of between 1650-1800 m and reached the sea, destroying villages along the shore. The lava flow was 16 km long. A second lava flow began at an altitude of 500 m, and produced a spatter cone at the source called Puhiopele. The second lava flow reached the sea over a front of 6km.

Volcanoes in Hawaii: Mauno Loa Volcano

Volcanoes in Hawaii: Mauno Loa Volcano

Location : Big Island, Hawaii

• 19.47 N, 155.60 W,
• Volcano summit elevation 4170 meters
• shield volcano

Mauna Loa volcano is one of the tallest mountains in the world. When measured from its base on the sea floor, it rises more than 17,000 m (56,000 feet). Mauna Loa volcano is approaching its longest historical period of inactivity, 25 years. Mauna Loa volcano is spreading because its size is large compared to the thin basal layer.

Mauno Loa 1984 Volcanic Eruption
Early on the morning of 25th March 1984, a magnitude 4 earthquake accompanied an eruption of Mauna Loa volcano. Lava fountains were visible in Mokuaweoweo caldera. This was followed by fissures opening on upper NE Rift Zone. By 29th March, lava flows reach within 6.5 km of Hilo. The eruption finished on 15th April 1984.

Mauno Loa 1975 Volcanic Eruption
Mauna Loa volcano began erupting on 5th July 1975. A line of fountains occurred in the summit caldera, and extended about 2 km beyond the caldera margin into the southwest rift zone.
Volcanoes in Hawaii-mauna-kea-volcano.

Volcanoes in Hawaii: Kilauea Volcano

Volcanoes in Hawaii: Kilauea Volcano

Location : Big Island, Hawaii

• 19.425 N, 155.292 W,
• Volcano summit elevation 1222 meters
• Shield volcano

Kilauea Volcano is one of the world's most active volcanoes. The Kilauea volcano has been in constant eruption since 1983. A large collapse occurred at Kilauea volcano in November 2005. Lava flows destroyed three houses in Royal Gardens subdivision in February 2008.

A bench collapse occurred at Waikupanaha ocean entry, Kilauea Volcano, Hawaii, on the afternoon of 17th February 2009 (local time). Four explosions were recorded between 12:45 and 1:15 pm. The lava delta and nearby areas remain dangerous and should not be approached. Bench collapse can occur without warning, and result in explosions and ejection of hot lava, and local waves.
Volcanoes in Hawaii