Saturday, March 12, 2011

Great Japan Earthquake 2011 and Volcanic Eruptions - John Seach

The Great Japan Earthquake of 2011 (mag 8.9) and its aftershocks, are capable disrupting volcanoes large distances from the epicentre. Very large eruptions are possible after Great Earthquakes. It is possible for eruptions to occur anytime after the earthquake, and the high risk period will last for several months. Japan has ten percent of the world's active volcanoes. The closest active volcano to the earthquake is Narugo, 150 km WNW of the epicentre. Volcanoes near to the earthquake epicentre include:
Kurikoma (153 km), Zao (170 km), Hijiori (195 km), Azuma (200 km), Adatara (200 km), Iwate (205 km), Akita-Komaga-take (210 km), Bandai (220 km), Chokai (220 km), Hachimantai (223 km), Akita-Yake-yama (228 km), and Nasu (250 km).
Volcanoes of Japan...

Great Japan Earthquake (Mag 8.9) and Tsunami - John Seach

Tsunamis from the great Japan earthquake have hit parts of the Pacific Ocean distant from the epicentre. Tsunami heights were 1.5 m in the Marquesas, 2.0 m Crescent City (California), 1.0 m Manus Island (Papua New Guinea), 1.4 m Hilo (Hawaii), 1.7 m Maui (Hawaii), 1.8 m Hokkaido (Japan), Vancouver Island (Canada), 1.3 m Midway Island, 0.65 m Saipan, and 0.7 m Vanuatu.
The Japan earthquake is the 5th largest recorded in the world. The top five earthquakes are: Chile mag 9.5 (1960), Prince William Sound, Alaska mag 9.2 (1964), Sumatra, Indonesia mag 9.1 (2004), and Kamchatka, Russia mag 9.0 (2004).
Volcanoes of Japan...

Friday, March 11, 2011

Great Japan Earthquake and (Mag 8.9) Tsunami - John Seach

A great earthquake (mag 8.9) hit Japan on Friday 11th March 2011, at 2:46 pm local time. The epicentre was located offshore 130 km E of Sendai, in Honshu. The earthquake had a shallow focus at 24 km. A 10 metre high tsunami has hit the eastern coast of Honshu. Major tsunami damage was reported at Sendai. Narita airport in tokyo was closed. A tsunami warning was placed over the Pacific including Australia, New Zealand, Pacific Islands, Hawaii, Central America, and South America. Earthquakes of this magnitude can disrupt nearby volcanoes. Large aftershocks with magnitudes up to 7 are occurring. Many fatalities have been reported. This is the largest historical earthquake to hit Japan. The earthquake was preceded by four earthquakes in the two days prior to the Great Earthquake.
The earthquake sequence was as follows:
Magnitude 7.0 Wednesday, March 09, 2011 at 11:45:20 AM.
Magnitude 6.1 Thursday, March 10, 2011 at 03:16:14 AM.
Magnitude 6.0 Thursday, March 10, 2011 at 04:44:35 AM
Magnitude 6.0 Thursday, March 10, 2011 at 06:22:18 AM
Magnitude 8.9 Friday, March 11, 2011 at 02:46:23 PM
Volcanoes of Japan...

Sunday, March 06, 2011

Kilauea Volcano, Hawaii - John Seach

A new fissure eruption has begun at Kilauea volcano in Hawaii. On 5th March, Hawaii time the floor of Pu'u O'o crater collapsed over a period of 10 minutes. The event was preceded by a rapid deflation of Pu'u O'o and increased tremor along Kīlauea's middle east rift zone near Makaopuhi and Napau craters. There was also deflation at the summit. New fissure opened between Pu'u O'o and Napau crater. The fissure ejected lava spatter 20 m high.
More on Kilauea volcano...

Saturday, March 05, 2011

Kilauea Volcano, Hawaii - John Seach

Kilauea volcano in Hawaii continues to erupt. Along the east rift zone lava is erupting from Pu'u O'o crater covering the western crater floor. On the coastal plain near Kalapana, surface lava flows have reached within 1 km of highway 130. At the summit of Kilauea lava in the vent of Halemaumau reached a level of 70 m below the surface. Seismic tremor at the summit is sometimes accompanied by rockfall in the vent.
More on Kilauea volcano...

Fuego Volcano, Guatemala - John Seach

Eruptions continue at Fuego volcano, Guatemala. During the night incandescent explosions ejected lava 100 m above the crater and sent avalanches down surrounding valleys. Rumbling sounds were heard and audible degassing lasted up to six minutes at a time. Ash emissions reached a height of 800 m above the crater and drifted south and southwest.
More on Fuego volcano...

Santa Maria Volcano, Guatemala - John Seach

On 3rd March an explosion occurred from Caliente crater at Santa Maria volcano in Guatemala. Ash emissions reached 10,800 ft above sea level and produced ashfall in towns to the west and southwest of the volcano. The explosion generated a pyroclastic flow which moved 2.5 km down the southwest flank. Activity continued on 4th March with moderate explosions ejecting ash to a height of 11,000 ft above sea level, and ash fall on surrounding farms.
More on Santa Maria volcano...