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Earth Tides and Cyclical Groundwater Level Fluctuations (Part 3)

Friday, 8 February 2019 18:20:29 Europe/London

Gravitational Effects on Groundwater Levels: Recent Research

Since writing my last two blogs (Groundwater Levels and Earth Tides - Part 1 and Part 2), I’ve received links to more recent research relating to semi-diurnal and diurnal groundwater level changes, including those caused by Earth Tides. I felt I should share these to end this series of articles. My thanks to Prof.

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Earth Tides and Cyclical Groundwater Level Fluctuations (Part 2)

Wednesday, 9 January 2019 21:01:55 Europe/London

Earth Tides and Cyclical Groundwater Level Fluctuations (Part 2)
Gravitational effects on Groundwater Levels

In my last blog, Groundwater Levels and Earth Tides - Part 1, I presented a six-month record of hourly groundwater level measurements from the Indian sub-continent showing daily cyclical variations of approximately 10 cm per day (Figure 1).

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Earth Tides and Cyclical Groundwater Level Fluctuations

Thursday, 6 December 2018 17:13:13 Europe/London

I recently reviewed some high-frequency groundwater level monitoring data from several wells and observation boreholes located within a few kilometres of the Indian Ocean that had been described in a report as demonstrating “tidal” influences.

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Being at Contaminated Land Expo, 2018

Monday, 17 September 2018 22:03:53 Europe/London

NEC, Birmingham, 12 and 13 September 2018

I have just returned from 2 days with the In-Situ team at this year’s Contaminated Land Expo held at the National Exhibition Centre in Birmingham.

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Real Time Remediation Monitoring - Part 2

Wednesday, 15 August 2018 17:27:00 Europe/London

Tracking the progress of in-situ chemical oxidation

Last year I presented the story behind the use of real-time monitoring to track the movement of an activated carbon fluid injected into groundwater.

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How Much to Purge?

Monday, 16 July 2018 23:04:29 Europe/London

A modelling approach to purge volume guesstimation

A novel approach to determine an optimum groundwater purging and sampling strategy was published last year in the Journal of Hydrology

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Redr Drilling Course 2018 – another successful year

Friday, 8 June 2018 17:29:47 Europe/London

Redr Drilling Course 2018 – another successful year
29 delegates – one successful water well!

5 Years and getting better every year

This year’s 5th annual Redr / University of Cranfield Drilling Course was held from 8th to 11th May.

 

 

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ORP Field Measurements Reporting Redox Potential (E h ) Correctly

Saturday, 7 April 2018 14:25:01 Europe/London

ORP Field Measurements Reporting Redox Potential (Eh) Correctly

Many practitioners are familiar with using multiparameter water quality meters in the field which incorporate ORP (oxygen-reduction potential) sensors. But ORP measurements are often reported from field probe measurements without the necessary conversion made to standardise readings to a common reference

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New Research Proposes Changes to Low Flow Guidance

Friday, 6 April 2018 15:50:28 Europe/London

Using screen volumes to guide low flow purging sampling in DNAPL source zones

A new paper published in the Journal of  Contaminant Hydrology (McMillan et al 2018) has identified the need to be cautious when using indicator water quality parameters to indicate the stability of groundwater chemistry during purging

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REDR Drilling Course 2018

Tuesday, 27 March 2018 23:18:06 Europe/London

8 to 11 May 2018

I’m currently planning my contributions to the Redr (Registered Engineers for Disaster Relief) Drilling Course which runs this year from 8th to 11th May.

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