This blog is dedicated to students, engineers, practitioners and other curious people who want to develop digital solutions applied to geosciences.

Groundwater recharge estimation using Earth Engine

Guillaume Attard • Apr 22, 2022

This article is an Earth Engine tutorial focusing on the calculation of groundwater recharge. The wilting point and field capacity of the soil are calculated by applying some mathematical expressions to multiple images. Then, evapotranspiration and precipitation datasets are resampled and combined. Finally, the well-known Thornthwaite-Mather procedure is implemented by iterating over the meteorological image collection to calculate and map groundwater recharge.


Geostatistics applied to hydrogeology with Scikit-GStat

Guillaume Attard, Mirko Mälicke • Jul 9, 2021

The aim of this article is to explore the Scikit-GStat library and to build a piezometric map based on a variography study and on the building of a kriging model. Finally, the results of the kriging estimation are compared with other standard interpolation techniques and the benefits of geostatistics are discussed.


Hydrogeology and data Science [French]

Guillaume Attard • Mar 15, 2021

In this webinar organized by the french chapter of the international association of hydrogeologists, some data science techniques applied to hydrogeology are presented and discussed. Particularly, several datasets are national API are presented, some NLP techniques applied to the interpretation of geological log description are illustrated, as same as the potential offered by remote sensing analysis and associated cloud platform such as Google Earth Engine.

Exploring hydrogeological data of France with python

Guillaume Attard • Jan 5, 2021

Recently, several (hydro-)geological datasets and API have been developed and published to facilitate the public access to the subsurface knowledge of France (e.g. geological properties, hydraulic head fluctuations, groundwater quality). The aim of this article is to present some of these web-services to describe the hydrogeological context of a region of interest.

Managing Interference Between Geothermal Installations

Guillaume Attard, Hannes Hemmerle & Peter Bayer • Sep 21, 2020

Augmented geothermal utilization entails a higher density of installations and potential competition among adjacent systems. This article presents a methodology to define the appropriate distance that should be kept between existing and future installations of different power to protect existing installations and optimally manage the urban thermal use of shallow groundwater.

Introduction to the Earth Engine python API

Guillaume Attard, Susanne Benz • May 24, 2020

Within the last decade, a huge amount of geospatial data, such as satellite data or the output of large scale models have become freely available from multiple national agencies. In this post, we explore the Google Earth Engine Python API which gives the possibility to manipulate these datasets in a Python environment.


Predicting thermal plumes of groundwater heat pump systems

Guillaume Attard • May 2, 2020

The thermal impact assessment is a crucial step in a geothermal project. Particularly in regards of geothermal energy planning. In this article we explore three analytical solutions which can help to estimate the thermal impact caused by groundwater heat pump systems.