Recent content by gNat

No, those are WGS84 coordinates in decimal degrees. I've attached the Google map of Pink Hill station using the coordinates given on the previous image. The wells are the three dots to the east of the location symbol. Land surface elevations (feet above MSL): Pink Hill 126 Gibsonville 648...

Sorry to be slow to post again. I was busy brushing up on my Python skills and building better access to the hourly ground water level data and SOLID. I've attached eight pictures (sorry) of graphs which combine ground water levels from various stations in our network (across NC) and SOLID...

We have a bunch of wells, NC has diverse geology, and we don't always see the ripples we associate with Earth tides, so I'm guessing that some of those questions can be answered with enough effort. For example many of our wells are in coastal plain sediments (rarely lithified) and we don't see...

First, you're right about how fascinating the data can be. My job is analyzing the bigger wrinkles in the data which are associated with measuring aquifer conditions (drought and availability) -- more important to the citizens of NC. We do have the barometer readings for the same time period...

I'm not quite sure what therapy is necessary, but good luck. So, if it was unbent, you can model Earth tides at a particular location?

We also use two pressure sensors, one below water and the other dangling in the well above water, but below land surface to avoid temperature effects (we've documented them in the past) and resorted to moving the barometer into the well as a result. I've attached another image of the Troutman...

I appreciate your time and thoughtful insights. I'll see if our Triangle's universities are up to the task.

Thank you for explaining the two components of tides and I see that we're missing something. I've attached another picture of hydrographs of the same time period from two wells. I've selected a longer time period (one month) for display in the lower graphs. With this webpage, a plot of data...

No pumping from this well, nor are there any nearby pumping wells. Please explain your phase shift comment. The hydrograph (time-series plot of water level) is impacted by rainfall events which might be hiding a phase shift?

In my work with the North Carolina Division of Water Resources our measurements of water levels in monitoring wells (especially those in basement rock) commonly reveal Earth tides (https://www.ncwater.org/?page=20). The data is collected hourly (using a pressure transducer) which is frequent...