step drawdown test

step drawdown test . A type of aquifer test in which the water level in a pumped well is measured while the well is pumped at a constant rate for a given period of time; the pumping rate is successively increased for each of several time intervals, the water level is measured during each interval, and drawdown is calculated for each pumping rate. The derived relationship between drawdown and pumping rate can be used to estimate aquifer properties, the practical yield of the pumping well, and the appropriate depth setting of the pump in a production well.

100 years of female Fellows: Ethel Woods (nee Skeat)

2019 marks 100 years since women were able to be elected as Fellows of the Geological Society, with the first eight elected in May 1919. They came from a diverse range of specialisms, backgrounds and experience - as part of our activities to mark the anniversary, we're profiling each of them. Continue reading

Administration Releases Critical Minerals Strategy

By Laura Szymanski, GSA Science Policy Fellow

The Trump Administration released A Federal Strategy to Ensure a Reliable Supply of Critical Minerals on 4 June 2019. The strategy assesses the supply chain of critical minerals and identifies ways to strengthen the supply chain through recycling, reprocessing, and identifying alternative minerals and materials, diversification of the supply chain through trade with allies and partners, and streamlining the permitting and review process.  The strategy also outlines a plan to identify new mineral resources within the Nation through mapping efforts. 

Celebrating 25 Years of Petroleum Geoscience

Over the last 25 years, Petroleum Geoscience has been publishing leading research papers on exploration and development of sub-surface hydrocarbon resources and related themes in applied geoscience. The journal is a joint enterprise between the Geological Society of London (GSL) and the European Association of Geoscientists and Engineers (EAGE), published by the GSL Publishing House. … Continue reading


hurricane (hur'-ri-cane). A tropical cyclone, esp. in the North Atlantic and eastern North Pacific basins, in which the sustained near-surface wind speed equals or exceeds 64 knots (73 mph). See also: typhoon.


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