Data Acquisition - Gravity
Acquiring Your Data
Using the survey parameters you defined in the previous exercise you should now generate field observations for interpretation. Fill in the specified parameters in the form below, and a data set will be generated for you.
Line Location: The north-south location of the survey line. All gravity survey lines run east-west. A value of 0 will place the line in the exact center of the survey area, -250 will place it along the southern edge of the area, and 250 will place it along the northern edge of the area.
Station Spacing: Indicates distance between observation points along survey line. This value is measured in meters.
Measurements per Station: Number of gravity readings taken at each station. Reported gravity value will represent the average of the readings taken at each station. Multiple readings per station can be used to reduce the level of random noise associated with each measurement. The time required to complete the survey and the associated cost, however, increases as the number of readings increases.
Base Station Location: Indicates the relative position of your gravity base station along the line. Observations from this base station are used to remove the temporally varying components of the earth's gravity field and instrument drift. This value is also measured in meters. It could be anything, but for logistical reasons, should be close to your survey line. The eastern limit of the survey line is at a distance of 250, the western limit is at a distance of -250.
Return to Base Station: Indicates the temporal frequency with which you will reoccupy the base station. This value is measured in minutes.
Total Survey Bid: Your bid for completing the survey as defined in the Request For Bid.