"The decay of the Earth's magnetic field is one of the single strongest arguments for a young earth."
"It's not intuitive that when tidewaters come in and out on the shoreline you are actually sitting on a rotating earth passing through a tide that is stationary in space."
"We can get a great deal from geophysics, early maps, and rare pictures."
"Gravity is stronger over oceans than land. The spinning gaseous sun should be oblate, it's almost a perfect sphere."
"The South Atlantic anomaly (SAA) is one of the most intriguing and perplexing mysteries."
"I get a tingle at my spine geophys get going with the huge task of investigating the hill."
"This has got to be some of the most spectacular geophysics we've ever had on Time Team."
"The wider the split is, the weaker our magnetosphere is."
"Geophysics is good for prospecting but conclusions drawn from geophysical investigation should always be confirmed with intrusive methods."
"The magnetic field of the earth is set to reverse."
"Since the advent of recorded history, there has been a relationship with structure at the geophysical level that defies rational understanding."
"It's flat field next to the cathedral occupies a large amount of the top of the hill and ought to have been a good place to build. This is the first Target area for geophysics."
"... whatever happens inside the inner core is actually extremely important for basically the survival of life on the planet."
"... it's also quite possible that it's actually because of this structure that we even have the outer core that then produces the magnetic field."
"One of my early experiences with a high lift jack, and most memorable one was as a young exploration geophysicist out doing field work in rural Nevada."
"So earthquakes provide sound waves that go through the planet."
"The P wave shadow between 110 and 140 degrees tells us the outer core is liquid."
"The presence of P waves in an area where there should be a shadow tells us there is a solid inner core."
"...these blobs of iron liquid floating around in the silicate magma... essentially float around as blobs within the silicate magma."
"...until the iron droplets of iron liquid became so large that they would begin to fall towards the center of the earth under gravity."
"...the presence of the magnetic field is extremely important to life on the surface of the earth."
"The magnetic field also protects us from cosmic radiation, preventing particles from reaching Earth."
"The trajectory of the magnetic north pole has been shifting over time, affecting navigation and compass use."
"Numerical simulations help us understand the complex dynamics of the Earth's core and its role in generating the magnetic field."
"We have a very brief window of observations for this observational era where we can use high precision satellite observations to do things like you know brevimetry to actually weigh from space the amount of ice over Greenland or Antarctica."
"We're releasing the energy from the transitional zone and where is that strain going? It's being transferred to the lock zone."
"Days on Earth will get longer... in 180 million years, we'll gain one extra hour."
"The angle of subduction dictates where a volcano will form."
"The pressure at the center of Earth has been estimated very accurately; it's 3.6 million atmospheres or 360 GPa."
"The motion of molten metal in the outer core is what's responsible for generating Earth's magnetic field."
"Earth's magnetic field hides a fascinating story; it's getting weaker day by day."
"We can measure those variations in gravity and use that to actually learn about variations in density below our feet."
"We have very good constraints from GPS arrays of how the plate is accommodating this deformation today."
"The Richter scale is a logarithmic scale."
"Understanding thermal conductivity at the lunar surface lets you understand how hot the lunar interior is because it constrains how quickly heat can get in and out."
"A mega earthquake can actually shorten the length of a day for the entire planet."
"The magnetic field is weakening, and the magnetic poles are drifting."
"The discovery of the radiation belts was the most important discovery of the International Geophysical Year."
"It will ultimately release the built-up strain resulting in a great earthquake."
"Can we assume that the earth has all sorts of natural laws? Gravity, what happens when a river is flowing towards a cliff."
"The ratio is a function of porosity with two parameters: one is called 'a' and the other is called 'M'."
"SW to the power N is a constant times RW over RT."
"SW to the power N is A over Phi to the power M RW over RT."
"A linear regression is something we can very easily apply in geophysics."
"Ocean currents are driven by a combination of temperature, gravity, prevailing winds, the Coriolis effect, and the location of the continents."
"I want to work on environmental geophysics."
"There's a beautiful graceful clockwise rotation of the crust in the Pacific Northwest."
"The entire Pacific Northwest is rotating clockwise today at almost a degree per million years."
"Geophysics plays an important role for characterizing the groundwater in the hot rocks."
"Millions of earthquakes happen on Earth each year."
"Our planet has its magnetic field thanks to scorching hot liquid metal flowing inside its outer core."
"We think they're detecting thunder in the ground."
"In rock mechanics, the P-wave actually travels through the rock and not through the water."
"Seismic CPT revolves around measuring seismic wave velocities."
"We are protected by an invisible magnetic field that comes from the center of the Earth."
"The Earth has a magnetic field kind of like a bar magnet."
"Our earth acts like a magnet; in fact, we can say that a planet is actually a big bar magnet."
"Merle and his students concluded in their 1970 paper that Mount Stewart used to be in Mexico based on measurements of the invisible magnetic field locked with magnetite grains."
"The Earth's gravity field is not exactly the same everywhere on the planet."
"The reason we know the Earth's different layers is because of geophysics."
"The Earth's magnetic field, if stronger, electromagnetic storms would be too severe; if weaker, there'd be inadequate protection from cosmic rays and stellar radiation."
"This is an important flow, you know, in earthquakes and things like that."
"Velocities increase gradually as you go deeper into the Earth."
"The Earth's magnetic field is weakened at the location of the triangle, this field works as a shield which repels solar particles."
"This mad boom, it's really a fascinating piece of equipment; it actually detects deviations in the Earth's magnetic field caused by large objects."
"It underscores the vulnerability of our societies to the whims of the Earth's geophysical processes and stands as a testament to the resilience and adaptability of humanity in the face of seemingly insurmountable challenges."
"Every 10,000 years, the magnetic pole switches."
"Seismic activity has decreased and according to GPS measurements, movement in the area is decreasing."