قالب وردپرس درنا توس
Home / Science / The world’s largest volcano, Mauna Loa, may be waking up

The world’s largest volcano, Mauna Loa, may be waking up



Pahoa, Hawaii-May 24: Kate Lily (L) and Will Diwan watched when lava erupted from the Kilauea volcano rift at Lailani Estate in Hawaii

The Mauna Roa River is stirring. This week, after a few months of increased seismic activity at the summit, more “small-scale” small earthquakes shook the Hawaiian peak. These earthquakes may mean that the world’s largest volcano is awakening, which may mean that Mauna Loa has erupted for the first time since 1984.

Now, you may be thinking: “Hey, haven’t the Hawaiian volcanoes erupted a big eruption a few years ago? Did they erupt now?” Yes, you are right, Kīlauea is currently erupting , And has erupted for decades. In 2018, there was a huge eruption (as shown in the picture). The entire residential area was razed to the ground, displacing 2,000 people and adding more than 800 acres of land to the Big Island. But Kīlauea is different from Mauna Loa.

The Big Island of Hawaii Fives Separate volcanoes: Kilauea, Mauna Loa, Mauna Kea, Hualālai and Kohala. Kohala is extinct, and Mauna Kea is listed as dormant and has erupted for thousands of years, but the rest of the volcanoes are still active, including the sixth volcano, Lō’hihi, which is still underwater.

Kilauea volcano is the most active volcano in the world. From 1983 to 2018, it has been erupting continuously in Pua crater. On the other hand, the Monaroa volcano, which accounts for half of the Big Island, is the largest mountain range and the largest active volcano in the world. The volcano has erupted 33 times since 1843, but since 1984, there has never been any volcanic eruption or active volcanic eruption, which is the Moku’āweoweo crater.

All these activities, actually the entire Hawaiian island chain, are due to the Pacific plate of the crust slowly drifting through hot spots in the mantle for a few seconds each year, which is about 32 miles per million years. Magma rising from the hot spot gushes out of Hawaii’s shield-shaped volcano, making the island grow. As the magma and gas below the volcano rise and release, it moves the earth. Therefore, more earthquakes indicate that another volcano may erupt. Before the previous volcanic eruption, there had been a large earthquake peak.

The Monaroa volcano erupted on a large scale and fierce in 1984, and the lava flow threatened the largest population center on the Big Island of Hilo City. Fortunately, the melting pot stopped only 7 miles from the city. Now that Mauna Loa is causing a sensation again, the Hawaii Volcano Observatory of the United States Geological Survey (USGS) reminds residents that “it’s time to re-examine personal eruption plans. It’s similar to preparing for the hurricane season and making it in advance. The eruption plan is helpful in emergency situations.”

According to this map of the United States Geological Survey, the speed of lava flow reaching different areas varies greatly according to the location and method of the eruption of Mauna Loa.

Color map of response time of lava flowNow, compared to 1984 or other eruptions…, the seismic activity on Mauna Loa Volcano now is nothing. But for these volcanoes, considering the continued activity of Mauna Loa and other Hawaiian volcanoes, when they will erupt, rather than whether they will erupt again, is entirely a question.

It’s worth noting that we can’t even be sure where the lava flow might come from. The lava flow from the Kilauea volcano eruption in 2018 did not come from the famous crater, but from dozens of cracks opened in the residential area. Scientists can hope to predict and prepare for these volcanic eruptions and warn people to be vigilant, but there is a Hawaiian proverb: A friend who studies volcanoes there shared with me the goddess of volcanoes: want. “When Pele started to act, all we could do was to avoid and hope she would give a warning.

(Via: Maui Now, photo: Mario Tama / Getty Images)

Want more stories like this? Become a subscriber and support the site!

—Mary Sue has a strict comment policy that prohibits but is not limited to insults to others anyone, Hate speech and trolls.

There is a tip, should we know? [email protected]




Source link