G.CAN.00.VHZ.2013.001.00.00.04.569-2013.031.23.59.54.569.diff.jpg

This is a sample of what the signal looks like from the Z (vertical) axis of a broadband seismometer in Cantley Canada. Again, only a linear regression is needed. The other two axes are similar, though horizontal accelerations tend to be a bit more noisy for different reasons.

JPEG Image - 89.09 kB - 08/22/2019 at 03:57

Preview
Download

Bandung Indonesia Sample Calibration Spreadsheet Image ba000100.ggp.png

This is what the "sun moon" signal looks like from one month of minute readings from the superconducting gravimeter at Bandung Indonesia. You can see some earthquake activity (seismic jiggling of the detector). The pink is the calculated Newtonian tidal gravity. The blue is the station reading. The black is the residual which is mostly from atmospheric density variations. The R squared (R2) is 0.996357. The a and b are offset and multiplier from the linear regression. The offset is related to the level of helium. And the multiplier is related to the local (pretty consistent) Love number which your can find related to "earth tides".

Portable Network Graphics (PNG) - 209.77 kB - 08/22/2019 at 03:47

Preview
Download

First Interference Ring Setup.jpg

This is a picture of the setup used for the "first interference ring" setup. The batteries and laser diode at the bottom, the two mirrors, the screen, camera and postit note to block the direct beam. The laser is pointing to the right edge of the farther mirror, the beam bounced back toward the bottom, hits the right edge of the mirror closest to the bottom, then boes to the right edge of the yellow postits. The scattered bean goes across the full space between the yellow postits and the camera. It is probably the front surface reflection, but I don't know for sure yet.

JPEG Image - 2.70 MB - 05/01/2019 at 13:42

Preview
Download

Gravimeter Images.png

These are some of the images you might encounter when you are looking for analog sensors that will give you gravitimeter data streams. Laser and magnetic levitation, pyrolytic levitation, the signals and someones measurement of them. High eigenmodes of non contact atomic force cantilevers. Ocean waves and natural sources of gravitational change.

Portable Network Graphics (PNG) - 740.68 kB - 04/11/2019 at 16:39

Preview
Download

Magnetometer and Gravimeter Networks Image 2.png

These is the second diagram from the video "Spatial Resolution of Magnetometer and Gravimeter Imaging Networks"

Portable Network Graphics (PNG) - 61.42 kB - 04/07/2019 at 23:00

Preview
Download

Magnetometer and Gravimeter Networks Image 1.png

These is the first diagram from the video "Spatial Resolution of Magnetometer and Gravimeter Imaging Networks"

Portable Network Graphics (PNG) - 78.39 kB - 04/07/2019 at 22:59

Preview
Download

Spatial Resolution of a Network of Sensors using Signals at the Speed of Light and Gravity.xlsx

This is the spreadsheet used in the Video "Spatial Resolution of Magnetometer and Gravimeter Imaging Networks" You can open it in Excel or google Sheets. If you change the sampling rate, the top uses a standard WGS 84 ellipsoid to estimate the global surface coverage at that sampling rate. If you look at the bottom portion, it calculates the number of 3d "spots" there will be in the region between the earth's surface and 1000 km out. If you want a different search area, change the height. Don't forget the height is in meters!!! :)

sheet - 12.87 kB - 04/07/2019 at 22:47

Download