Discover and read the best of Twitter Threads about #alaskaearthquake
Most recents (6)
-I think I gonne keep updateing this 24 hour recording -
24 hour recording of seismograph: AV-VNHG. It is 73.07 miles or 117.60 kilometers away from Sand Point to the city of Veniaminof. #AlaskaEarthquake
VNHG is 14.2 km (8.8 miles) northwest of the active cone of Veniaminof.
24 hour recording of seismograph: AV-VNHG. It is 73.07 miles or 117.60 kilometers away from Sand Point to the city of Veniaminof. #AlaskaEarthquake
VNHG is 14.2 km (8.8 miles) northwest of the active cone of Veniaminof.
-SECOND UPDATE🚨
24 hour recording of seismograph: AV-VNHG. It is 73.07 miles or 117.60 kilometers away from Sand Point to the city of Veniaminof. #AlaskaEarthquake
VNHG is 14.2 km (8.8 miles) northwest of the active cone of Veniaminof.
24 hour recording of seismograph: AV-VNHG. It is 73.07 miles or 117.60 kilometers away from Sand Point to the city of Veniaminof. #AlaskaEarthquake
VNHG is 14.2 km (8.8 miles) northwest of the active cone of Veniaminof.
-THIRD UPDATE🚨
24 hour recording of seismograph: AV-VNHG. It is 73.07 miles or 117.60 kilometers away from Sand Point to the city of Veniaminof. #AlaskaEarthquake
VNHG is 14.2 km (8.8 miles) northwest of the active cone of Veniaminof.
24 hour recording of seismograph: AV-VNHG. It is 73.07 miles or 117.60 kilometers away from Sand Point to the city of Veniaminof. #AlaskaEarthquake
VNHG is 14.2 km (8.8 miles) northwest of the active cone of Veniaminof.
1 hour recording of the nearest Seismograph to Sand Point , wich is even closer to the 7.5 earthquake. AK-CHN (CHERNABURA ISLAND)
54.831° N 159.589° W Elevation 71 meter, Installed 1993 #AlaskaEarthquake
54.831° N 159.589° W Elevation 71 meter, Installed 1993 #AlaskaEarthquake
Here seismic recording of several Seismographs in Alaska of the 7.5 earthquake. #AlaskaEarthquake
24 hour recording of seismograph: AV-VNHG. It is 73.07 miles or 117.60 kilometers away from Sand Point to the city of Veniaminof.
VNHG is 14.2 km (8.8 miles) northwest of the active cone of Veniaminof.
VNHG is 14.2 km (8.8 miles) northwest of the active cone of Veniaminof.
#Tsunami Advisory for #Alaska
Active for next 2 hours · National Tsunami Warning Center
The tsunami Advisory remains in effect for the coastal areas of Alaska from Samalga Pass, Alaska (30 miles SW of Nikolski) to Amchitka Pass, Alaska (125 miles W of Adak).
Active for next 2 hours · National Tsunami Warning Center
The tsunami Advisory remains in effect for the coastal areas of Alaska from Samalga Pass, Alaska (30 miles SW of Nikolski) to Amchitka Pass, Alaska (125 miles W of Adak).
Event details:
Preliminary magnitude 7.8 (Mwp) #earthquake / Lat: 55.220, Lon: -158.594 at 2020-07-22T06:12:44 UTC
#Tsunami advisories mean that a tsunami capable of producing strong currents or waves dangerous to people in or very near the water is expected.
#Alaska
Preliminary magnitude 7.8 (Mwp) #earthquake / Lat: 55.220, Lon: -158.594 at 2020-07-22T06:12:44 UTC
#Tsunami advisories mean that a tsunami capable of producing strong currents or waves dangerous to people in or very near the water is expected.
#Alaska
Significant widespread inundation is not expected for areas under an advisory.
Currents may be hazardous to swimmers, boats, and coastal structures and may continue for several hours after the initial wave arrival.
The next update - 2 hrs.
#Tsunami #AlaskaEarthquake #Alaska
Currents may be hazardous to swimmers, boats, and coastal structures and may continue for several hours after the initial wave arrival.
The next update - 2 hrs.
#Tsunami #AlaskaEarthquake #Alaska
Today is the anniversary of the M9.2 #AlaskaEarthquake. Since I'm currently teleworking from right above the rupture zone, I'd like to tell you about Dr. Ruth A. M. Schmidt.
On March 27th, 1964, Ruth and four others were on top of a frozen glacier lake. The ice began to crack…
On March 27th, 1964, Ruth and four others were on top of a frozen glacier lake. The ice began to crack…
"I first recall a distant roar sound then the lake began to violently vibrate … The ice was now heaving up and down in big surges … We noticed small cracks (couple inches wide) running great distances … I could hear these cracks forming" Arthur Kennedy, pubs.usgs.gov/pp/0544a/pp544…
For full minutes their world shook, keeping each of them pinned as deep booming was cut by sharp cracks of ice fracturing. When shaking subsided, Ruth and her colleague fled incoming snow avalanches and met their group in the middle of the lake. All accounted for, thank goodness.
The Great Alaska Earthquake occurred on March 27, 1964 and rocked the state with strong ground shaking that lasted four and a half minutes. #AlaskaEarthquake #earthquake
At M9.2, it was the 2nd largest quake ever recorded. This event also rocked the scientific community by confirming a major principle of #platetectonics with the observation that the oceanic Pacific Plate dives beneath the continental North American Plate at the Aleutian trench.
On average, #Alaska has 24,000+ measured earthquakes every year. Usually, there is at least one M7 every year. Between 1899 and 1986, eight #earthquakes of M8 or greater impacted different areas of the Aleutian subduction zone.
