Hawaii: A Slow Emergency and a Sudden Cliff Slump Disaster, Megatsunami
This becomes obvious in Figure 2. It shows how the permanent GPS stations installed and operated by the Hawaii Volcano Observatory moved in response to the 6.9 quake. The red arrows indicate the direction of horizontal motion and all of them point to the southeast. The length of each arrow represents the extent of the motion with the longest ones having moved by more than 2 feet.
Hawaii's Kilauea volcano could be ready to blow, scientists say
10 May, 2018
Geologists warned Wednesday that Hawaii’s Kilauea volcano could soon experience explosive eruptions from its summit and launch large rocks and ash into the air.
The Science Behind Hawaii's Erupting Volcano
10 May, 2018
Hawaii’s Kilauea volcano has entered a new destructive period of eruptions, which has happened several times since it resumed producing lava in 1983. Here’s some context behind one of the world’s most active volcanoes:
Kilauea is mass building
Kilauea is currently in the second phase of growth, the “shield building” stage, where it is the most active and the most voluminous.
Small eruptions below sea level.
2. Shield building
Volcanic mass grows above sea.
Magma cap flows, covers volcano."
In this stage, occurrences of lava flows and eruptions alternate. This can continue up to 2 million years.
Lava flows in past 1,000 years. Kilauea is covered with 90% young flows.
Lava eruptions have occurred at the volcano’s summit since 2008 and since 1983 on its eastern shoulder at a crater called Pu'u O'o, which collapsed on April 30, and sent lava searching for a new path downhill.
The cycle of volcanic eruptions and hazards
Scientists are concerned that if the lava column drops to the level of groundwater beneath Kilauea summit, it will cause more eruptions.
1. Magma column drops to water level.
Normally, when the lava lake level is high, temperatures are so hot that the groundwater in surrounding rocks is kept away from the magma.
2. Groundwater interacts with hot rock.
When lava meets the water, steam is created. Rocks can fall from walls as the lava lake lowers, and form a dam holding back steam.
3. Steam pressure builds, then explodes.
Rocks of up to 12 tons can shoot out of the volcano to a distance of half a mile. Marble-size rocks can fall for several miles, while falling ash is a concern 10 to 20 miles downwind.
Hawaii Island’s five volcanoes
Hawaii Island is made up of five volcanoes, four of which are considered active. Kohala is the oldest volcano on the island and inactive.
Sources: USGS, Smithsonian Institution, National Park Service
From yesterday -
WITHIN THE PAST FEW MINUTES, THERE HAS BEEN A TREMENDOUS EXPLOSION AT THE KILAUEA VOLCANO IN HAWAII.
Earlier today, the lava lake in the main crater of the erupting Kilauea Volcano on the big island of Hawaii virtually disappeared; sinking so low it could not be seen.
People thought this was a good sign, but it wasn't. When the lava level dropped, it allowed water from the sea to come backwards through the lava tunnels and directly into the volcano. This has now caused a Phreatic Eruption!
A phreatic eruption, also called a phreatic explosion, ultravulcanian eruption or steam-blast eruption, occurs when magma heats ground or surface water. The extreme temperature of the magma (anywhere from 500 to 1,170 °C (932 to 2,138 °F)) causes near-instantaneous evaporation to steam, resulting in an explosion of steam, water, ash, rock, and volcanic bombs.
At Mount St. Helens, hundreds of steam explosions preceded a 1980 plinian eruption of the volcano.
The fact this has now taken place is a deadly bad sign of worse to come. Prior to this taking place, just MINUTES AGO, new volcanic fissures were opening in new places miles away from the volcano indicating things are getting much worse, not better.
If Kilauea Violently erupts, an unstable landmass called the Hilina slump, which is 10 miles wide by 15 miles long and several miles deep, is expected to fall off the sea-side of the volcano into the Pacific Ocean. Such a slide would instantly generate s Pacific-wide TSUNAMI which would wipe out cities on the US West Coast within four to five hours after it took place.
Waves projected at 30+ Meters high (90+ feet tall) would inundate San Diego, Los Angeles and other large cities, wiping much of them off the face of the earth. (Full explanation HERE)
This is a very dynamic situation and people along the US west coast must pay very close attention to the events taking place in Hawaii.