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(9 of 10) What is the average yearly Eastward motion (in mm/year) at the GPS station COPR. Remember there are 365 days in a y

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Answer #1

Station Name: COPR_SCGN_2001

Location: Isla Vista, California

Latitude: 34.415

Longitude: -119.88

Elevation of the Station: 23 m from MSL

Date of Installation: 28/06/2001

Calculation of the yearly eastward motion can be done by calculating the station velocity in mm/year.

To do that ,we need to plot of time series plot on the graph with days on the X-axis and the station position in latitudes.

The slope of the equation gives the daily velocity of the station in the East-West direction.

If it is positive, the station is moving in the East direction; if it is negative, it is moving in the West direction.

To calculate the annual velocity of the station we need to multiply the daily velocity of the station with 365.25 days.

The daily co-ordinates of the station COPR as given as below:

Begin date: 29-06-2001

End date: 27-10-2018

Average east taken over all these readings: -358.787mm

Number of readings: 6311

Slope of the time series: 0.056 mm/day

Therefore, average daily velocity of the station is -0.056mm/day

The average annual eastward motion for the GPS station COPR= -0.056*365= -20.70 mm/day

Thus it can be concluded that the station is moving in the west direction as shown in the vector direction of the map.

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