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What is a seismic wave? Which of the four types is most destructive? Discover the science behind earthquakes with this animated video.
(Source: DCMP)
What will happen to Los Angeles when the big one strikes? The answer may be found at an earthquake site over 6,000 miles away. Examines why the 7.4 earthquake that struck Izmit, Turkey, killed over 17,000 people in 1999. Explains why even trained rescuers fight an impossible battle. Offers suggestions as to what Los Angeles must do to be better prepared for the earthquake that scientists see as inevitable, and to prevent this same tragedy from happening.
Through descriptions of actual volcanic and earthquake occurrences, students will discover how these dynamic forces affect the world. This video discusses the nature and causes of earthquakes and volcanoes. Other topics covered include molten rock, magma, lava, cinder cone, shield volcano, composite volcano, caldera, Ring of Fire, seismic waves, seismograph, and Richter scale.
Structural engineers at the University of California, Los Angeles are hoping to design earthquake-resistance buildings and communities. They are using data and computer modeling to design structures able to withstand major earthquake events. These models are meant to guide safety inspections following earthquakes and help engineers locate “hotspots” more quickly. Part of the “Science Nation” series.
Part of a series that features a wide variety of video footage, photographs, diagrams and colorful, animated graphics and labels. For this particular video, students will receive tips for being prepared in the event that an earthquake occurs. Part of the Science Video Vocab Series.
Cornell geophysicist Katie Keranen traveled to Oklahoma to study the increased occurrences of earthquakes. During her research, she discovered the increase in seismic activity is linked to the disposal of wastewater from fracking.
Part of a series that features a wide variety of video footage, photographs, diagrams, graphics, and labels. For this particular video, students will focus on earthquakes and the roll tectonic forces play in their occurrences along fault lines. Part of the Science Video Vocab series.
Pandas in China's Wolong Reserve are in danger after an earthquake destroyed part of their habitat. The epic center of the earthquake was just 20 miles from the reserve. After the earthquake, National Geographic dispatched a team to assess the health of the pandas and deliver needed supplies. Segment of video from Wild Chronicles Series.
America’s largest recorded earthquake happened on March 27, 2014 in Alaska. United States Geological Survey (USGS) sent geologists to study the impact and effects of the earthquake. The information gathered from the aftermath was essential in resolving key mechanisms of the developing theory of plate tectonics.
Photographers and scientists try to explain their fascination with volcanoes and earthquakes. Focuses not on the geological causes, but on how and why these phenomena are photographed and studied. Uses actual footage and closeups for impact. James Earl Jones narrates.
Understanding what happens at the epicenter of an earthquake, as the tectonic plates beneath the earth shift and the earth shakes, could help better predict when and where the next big one will hit. For the past six years scientists from a number of institutions have joined in a project called San Andreas Fault Observatory at Depth, or SAFOD. They have drilled to the core of the San Andreas Fault, near Parkfield California, down to a specific area along the fault known to experience a number of small earthquakes every year. By retrieving and studying core rock samples from that site, geologists Chris Marone and Brett Carpenter and hydrogeologist Demian Saffer are getting a better understanding of the types of rocks involved in major quakes, versus the rocks present at more forgiving ones.
In this segment, William D. Barnhart, assistant professor at The University of Iowa, discusses megathrust earthquakes. Part of the "Ask a Scientist" series.
In Miki, Japan, a six-story wooden model condominium was shaken by the equivalent of a 7.5 magnitude earthquake. The test was said to be the largest simulated earthquake ever attempted with a wooden structure. The full-scale building sat on a metal shake table that rocked it violently back and forth. The table, designed to hold up to 2.5 million pounds, reproduced forces based on those recorded during the 1994 earthquake in Northridge, California. But, it was scaled up by 180 percent to simulate an earthquake so violent it would only occur an average of once every 2,500 years. Part of the "Science Nation" series.
Examines the nuclear disaster that followed an earthquake and tsunami that rocked Japan on March 11, 2011. That day, Japan was hit with the fifth strongest earthquake ever recorded. The earthquake was followed by a tsunami which caused a nuclear disaster at Fukushima Nuclear Power Plant. This documentary details the chain of errors and oversights that led to the largest nuclear accident since Chernobyl.
On March 11, 2011 a 9.0 magnitude earthquake off the coast of Japan generated a tsunami. This series of ocean waves sped towards the island nation with waves reaching 24 feet high. The result was devastation and utter destruction. Part of the "Danger Zone" series.
When she was young, Danielle Sumy rode a roller coaster that simulated an earthquake. Her experience on the roller coaster launched her quest to understand how earthquakes happen. She describes how this encounter and her early love of science motivated her to become a geophysicist. Part of the “EarthScope Chronicles” series.
University of California, Berkeley seismologist Peggy Hellweg discusses the difference between a tremor and an earthquake. She also explains how TremorScope stations record deep tremors along the San Andreas Fault in central California. These stations reveal complex faulting behavior in the deep crust that is surprisingly different from earthquakes in the upper crust.
This program from the acclaimed PBS Nature series, "Forces of the Wild," shows how man risks everything by building on earthquake fault lines, farming the slopes of volcanoes, polluting the air and warming the Earth. Like children playing with matches, we have no idea of the consequences of what we are doing. Narrated by James Earl Jones.
A 9.0 magnitude earthquake rocks the ocean floor about eighty miles off the coast of Japan. This disturbance causes a transfer of energy from the seafloor to the ocean, which generated a series of ocean waves known as a tsunami. Within 20 minutes, the waves struck the Japanese coastline, and other nations go on high alert as the tsunami spreads throughout the Pacific Ocean. Part of the "Danger Zone" series.