Found 0 - 10 results of 17 programs matching keyword " seismic imaging"
The Exploratorium’s new home has an ace up its sleeve for the next big earthquake—a single seismic joint, 300 feet long and two feet wide, will isolate the entire pier structure from the rest of San Francisco. Watch here as the bulkhead at Pier 15 is readied for the installation of the seismic joint. At the southern end of the Golden Gate Bridge, a construction project to rebuild the elevated freeway ramp formerly known as Doyle Drive is underway. Senior bridge engineer John Walters tours us through some of the new seismic technologies being installed, including a seismic joint designed to handle several feet of longitudinal movement and a spherical bearing that allows for three-dimensional movement. Walters also points out a temporary structure built over the historic Presidio Pet Cemetery to protect the grave sites while providing a platform for the construction overhead. The ground under our San Franciscan feet is constantly on the move. Join Exploratorium educator Ken Finn as we visit some spots around town where exposed rocks reveal the tale of an active earth. Biologist Kristina Yu and exhibit developer Denise King share their love for the mighty (and mightily underappreciated) microorganism.
Dr. Marvin Speece, professor of geophysical engineering at Montana Tech and co-Principal Investigator of the Offshore New Harbor Project, discusses how their expedition collects scientific data. In this audio dispatch, correspondent Saffia Hossainzadeh describes her journey to her team's deep field site via a stop at Siple Dome station. In part one, hear about the difficulties involved in escorting 700 pounds of explosives through Antarctica. In this audio dispatch, correspondent Saffia Hossainzadeh describes her journey to her team's deep field site via a stop at Siple Dome station. In part two, hear about our combat-style landing at Siple Dome’s remote air strip. Watch ancient text revealed and read for the first time in a thousand years! Archimedes was one of the world's greatest scientific and mathematical minds. His thoughts were inscribed on goatskin parchment, but the letters and diagrams were scraped off and written over by Greek monks in the Middle Ages. Now, using an intense x-ray beam generated at Stanford University's linear accelerator, some of the original Greek text will be revealed for the first time in the modern world. Can pets predict earthquakes? Do quakes happen more often at certain times of the day or year? And could a really big one mean the end of California? Exploratorium geologist Eric Muller separates earthquake fact from fiction. Relive the Loma Prieta quake with our photographer, Amy Snyder, who was caught in an outhouse at the beach. Why didn't it, or any San Francisco skyscapers, collapse?