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| Seismic Imaging of the Earth's Interior |
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Earth scientist Barbara Romanowicz discusses how
she explores the deep structure and dynamics of
the Earth using seismic tomography. Series:
"Lawrence Berkeley National Laboratory Summer
Lecture Series" [2/2006] [Science] [Show ID:
11025]
Tags : seismology imaging Earth |
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Affichage : 1224
Durée : 3176 s |
| whale killed by seismic test |
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Some time in 2001, a whale was found dead off the
coast of Australia, allegedly killed by seismic
testing. This is an amazingly frank interview
with a Aussie politician about the whale!
Tags : whale dead seismic testing |
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Affichage : 10175
Durée : 200 s |
| 2850 Telegraph Seismic Strengthening |
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The voluntary seismic retrofit of this six-story
concrete structure presented a number of
challenges to Tipping Mar + associates. The
medical office building, which was located on a
near-fault site, had to meet the University of
California-Berkeley's stringent seismic safety
codes. In addition, the solution had to preserve
the building's office space on a limited budget.
The solution was an ingenious combination of two
more common seismic design techniques, which was
the use of reinforced concrete wall construction
combined with the self-centering capability of
un-bonded vertical post-tensioning. High-strength
cables run through the cast-in-place concrete wall
to minimize permanent residual deformation after
earthquake disruptions.
This approach adhered to both the architectural
and the economic demands of the design mandate.
The solution reduced the intrusion of structural
elements in the building's usable space while
utilizing traditional methods of cost-effective
concrete construction.
Architect: GLP
Tags : Structural Seismic Strengthening |
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Affichage : 4058
Durée : 41 s |
| New Madrid Seismic Zone - documentary excerpt |
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Documentary excerpt on the history and geology of
the New Madrid Fault Line. Stories and
recreations of the 1811/1812 New Madrid earthquake
series, including general ground warping,
ejections, fissuring, severe landslides, houses
damaged severely with chimneys thrown down, and
Mississippi river 'reversal' happenings in the
meizoseismal area.
re-inactments and warnings given about the future.
Interview clips with Geology Prof. Roy Van Arsdale
and includes cool CGI 3-D views of the sub surface
quake clusters and fault line.
Tags : earthquake Disaster New-Madrid Mississippi Missouri St. Louis Memphis fault crack terror environment |
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Affichage : 1317
Durée : 658 s |
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