The 5 Volcanoes Forming The Big Island Of Hawaii
Nicknamed the 鈥淎loha State,鈥� the State of Hawaii is situated about 3,200km to the southwest of the contiguous United States in the Pacific Ocean. It is the only US state located outside the continent of North America. The eight principal islands of Hawaii, namely, Hawai鈥檌, Maui, O鈥檃hu, Kaua鈥檌, Moloka鈥檌, Lana鈥檌, Ni鈥檌hau, and Kaho鈥檕lawe, were formed by volcanic activity originating from the Hawaiian hotspot in the earth鈥檚 mantle. The island of Hawai鈥檌, nicknamed the 鈥淏ig Island,鈥� covers a land area of 10,432.5 sq. km and is the largest island in the Hawaiian archipelago. The island of Hawai鈥檌 was formed from the eruption of five separate shield volcanoes, namely Mauna Kea, Mauna Loa, Hualalai, Kohala, and Kilauea. All the five volcanic peaks of the Big Island of Hawai鈥檌 are regarded as 鈥荣补肠谤别诲鈥� by the ancient Hawaiian people.
Mauna Kea
Mauna Kea is a dormant volcano situated in the north-central part of the Big Island of Hawai鈥檌. It is also the highest point in the state of Hawaii and the 海角社区鈥檚 15th most prominent mountain peak that rises to an elevation of 4,207.3m. However, when measured from its underwater base, Mauna Kea has a height of over 9,966m, making it the 海角社区鈥檚 tallest mountain, about 1,118m higher than Mount Everest. Approximately 2,382.79 sq. km of land area in the Big Island of Hawai鈥檌 is occupied by Mauna Kea, making Hawaii the 海角社区鈥檚 second-highest island and the highest island in North America. It is to be noted that Mauna Kea is the only Hawaiian volcano with well-defined evidence of glaciation. Therefore, the Hawaiian name, 鈥淢auna Kea,鈥� which means 鈥淲hite Mountain,鈥� refers to its seasonally snowcapped summit. The last eruption of Mauna Kea occurred about 4500 years ago, and at present, it is considered a dormant volcano. However, volcanologists believe that Mauna Kea can erupt again, and its eruption is well overdue. The mountain鈥檚 high elevation, stable airflow, and arid environment have made Mauna Kea鈥檚 summit one of the most suitable sites for astronomical observations in the 海角社区. Currently, about 13 observation facilities are placed on the summit of Mauna Kea that are operated by astronomers from 11 nations.
Mauna Loa
Mauna Loa is a giant active shield volcano situated in the south-central part of the Big Island of Hawai鈥檌 and forms the principal attraction of the Hawaii Volcanoes National Park. Rising to an elevation of 4,169m and with an estimated volume of 75,000 cubic kilometers, Mauna Loa is the 海角社区鈥檚 largest subaerial volcano. Approximately 5,271 sq. km that is about 51% of the land area in the Big Island of Hawai鈥檌 is occupied by Mauna Loa. The enormous weight of Mauna Loa has depressed the ocean鈥檚 crust by about 8km. Geological studies have revealed that Mauna Loa rose above the sea level about 400,000 years ago and is considered the second youngest among the five active volcanoes in the Hawaiian Islands. As per records, the active Mauna Loa volcano has erupted about 33 times a year from 1843 to date, averaging once every six years. However, since the 1942 eruption, Mauna Loa has remained inactive for several years.
Kilauea
Kilauea is the most active shield volcano situated in the southeastern part of the Big Island of Hawai鈥檌 that, together with Mauna Loa, forms the principal attraction of the Hawaii Volcanoes National Park. The volcano rises to an elevation of 1,247m, and since it lacks topographic prominence, Kilauea was considered to be a part of the neighboring Mauna Loa, with whom it also shares similar volcanic activities. Kilauea is regarded as the second youngest volcano in the Hawaiian-Emperor seamount chain and is estimated to be between 210,000 to 280,000 years of age. Kilauea is considered the most active volcano and the southernmost volcano of the Hawaiian Islands, which has erupted numerous times, with the most recent eruption that began on September 29, 2021.
Hualalai
After Mauna Loa and Kilauea, Hualalai is the third most active volcano situated in the northwestern part of the Big Island of Hawai鈥檌. Rising to an elevation of 2,521m, Hualalai is the fourth highest mountain peak in Hawaii. Approximately 751 sq. km, which is about 7% of the land area in the Big Island of Hawai鈥檌 is occupied by Hualalai. Having a volume of 12,400 cubic kilometers, Hualalai is considered the westernmost of the five major volcanoes on the Hawaiian Islands. Geological studies have revealed that about 300,000 years ago, the Hualalai volcano had risen above sea level, and about 100,000 years ago, the Hualalai volcano entered its post-shield stage of development. As per records, in the last 1,000 years, the Hualalai volcano has erupted at least three times. Based on its volcanic activity, Hualalai has a recurrence interval of about 200 to 300 years. Volcanologists, therefore, consider Hualalai to be 鈥減otentially active鈥� and expect the volcano to erupt again within the next 100 years.
Kohala
Kohala is the oldest of the five shield volcanoes that make up the Big Island of Hawai鈥檌. Approximately 606 sq. km, which is about 6% of the land area in the Big Island of Hawai鈥檌 is occupied by Kohala. The mountain has a volume of 14,000 cubic kilometers and is believed to have risen above sea level over 500,000 years ago. As per records, the volcano last erupted about 120,000 years ago. Between 250,000 to 300,000 years ago, at the end of its shield-building stage, a massive landslide had destroyed the northeastern flank of the Kohala volcano, reducing its height by more than 1,000m. The Kohala volcano is currently considered to be extinct.
