all across northern Japan they felt it a violent magnitude 9.0 earthquake on
violent magnitude 9.0 earthquake on
violent magnitude 9.0 earthquake on March 11 2011 it was centered about 80
March 11 2011 it was centered about 80
March 11 2011 it was centered about 80 miles offshore and tsunami warnings went
miles offshore and tsunami warnings went
miles offshore and tsunami warnings went up immediately in coastal cities people
up immediately in coastal cities people
up immediately in coastal cities people knew what to do next run to higher
knew what to do next run to higher
knew what to do next run to higher ground it’s from these vantage points on
ground it’s from these vantage points on
ground it’s from these vantage points on hills and in tall buildings that
hills and in tall buildings that
hills and in tall buildings that incredible footage was captured in
incredible footage was captured in
incredible footage was captured in Kesennuma people retreated to a
Kesennuma people retreated to a
Kesennuma people retreated to a high-rise rooftop and could only watch
high-rise rooftop and could only watch
high-rise rooftop and could only watch in horror as tsunami waves inundated
in horror as tsunami waves inundated
in horror as tsunami waves inundated their city knocking buildings into
their city knocking buildings into
their city knocking buildings into rubble
rubble
rubble and mixing into a kind of tsunami soup
and mixing into a kind of tsunami soup
and mixing into a kind of tsunami soup filled with vehicles building parts and
filled with vehicles building parts and
filled with vehicles building parts and contents seawater cascaded over sea
contents seawater cascaded over sea
contents seawater cascaded over sea walls and into cities this video shows
walls and into cities this video shows
walls and into cities this video shows the water rushing over an 18-foot
the water rushing over an 18-foot
the water rushing over an 18-foot seawall in the comedy city the seawall
seawall in the comedy city the seawall
seawall in the comedy city the seawall here was the world’s deepest and largest
here was the world’s deepest and largest
here was the world’s deepest and largest but not enough for the magnitude of the
but not enough for the magnitude of the
but not enough for the magnitude of the March 11 disaster it was the largest
March 11 disaster it was the largest
March 11 disaster it was the largest quake ever known in Japan and one of the
quake ever known in Japan and one of the
quake ever known in Japan and one of the five largest reported in the world more
five largest reported in the world more
five largest reported in the world more than 28,000 people are confirmed dead or
than 28,000 people are confirmed dead or
than 28,000 people are confirmed dead or missing
missing
missing when two tectonic plates pushed together
when two tectonic plates pushed together
when two tectonic plates pushed together under the sea the resulting earthquake
under the sea the resulting earthquake
under the sea the resulting earthquake sends an enormous burst of energy up
sends an enormous burst of energy up
sends an enormous burst of energy up through the ocean displacing enormous
through the ocean displacing enormous
through the ocean displacing enormous quantities of water with the upward
quantities of water with the upward
quantities of water with the upward motion a series of waves expands in all
motion a series of waves expands in all
motion a series of waves expands in all directions in deep water these waves
directions in deep water these waves
directions in deep water these waves travel fast up to five hundred miles an
travel fast up to five hundred miles an
travel fast up to five hundred miles an hour but only reach a height of a few
hour but only reach a height of a few
hour but only reach a height of a few feet a passing ship might not even
feet a passing ship might not even
feet a passing ship might not even notice but as the waves enter shallow
notice but as the waves enter shallow
notice but as the waves enter shallow waters friction with the ocean floor
waters friction with the ocean floor
waters friction with the ocean floor lowers the wave speed but raises them
lowers the wave speed but raises them
lowers the wave speed but raises them this video is from a Japan Coast Guard
this video is from a Japan Coast Guard
this video is from a Japan Coast Guard ship confronting a tsunami wave in
ship confronting a tsunami wave in
ship confronting a tsunami wave in shallow water on March 11 and a rare
shallow water on March 11 and a rare
shallow water on March 11 and a rare view from the air video of a tsunami
view from the air video of a tsunami
view from the air video of a tsunami wave approaching the shoreline in Japan
wave approaching the shoreline in Japan
wave approaching the shoreline in Japan some tsunami waves reached as far as 3
some tsunami waves reached as far as 3
some tsunami waves reached as far as 3 miles inland Japan may be the most
miles inland Japan may be the most
miles inland Japan may be the most seismological II studied country in the
seismological II studied country in the
seismological II studied country in the world and with more than 1,200
world and with more than 1,200
world and with more than 1,200 high-precision GPS stations a
high-precision GPS stations a
high-precision GPS stations a geophysicist at the University of Alaska
geophysicist at the University of Alaska
geophysicist at the University of Alaska used the data to create a visualization
used the data to create a visualization
used the data to create a visualization of the March 11 quake the waves of
of the March 11 quake the waves of
of the March 11 quake the waves of displacement that you see we’re moving
displacement that you see we’re moving
displacement that you see we’re moving as fast as 5 miles per second
in this photo the ripples of tsunami
in this photo the ripples of tsunami waves are seen moving upstream in the
waves are seen moving upstream in the
waves are seen moving upstream in the naka river at Hitachi naka city new
naka river at Hitachi naka city new
naka river at Hitachi naka city new technology left an enormous amount of
technology left an enormous amount of
technology left an enormous amount of visual evidence for studying years to
visual evidence for studying years to
visual evidence for studying years to come
come
come and can perhaps help us better
and can perhaps help us better
and can perhaps help us better understand the power of earthquakes and
understand the power of earthquakes and
understand the power of earthquakes and tsunamis and prevent loss of life in the
tsunamis and prevent loss of life in the
tsunamis and prevent loss of life in the future
future
future [Music]
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