Newsletters

28 FEBRUARY, 2025 Newsletter Re-valorisation In our last Newsletter we argued that closed mines represent a big and largely overlooked threat, which is essentially twofold: a) geotechnical stability of old tailings and waste dumps as well as the territories over the underground shafts and b) environmental contamination caused by residual acid and toxic materials or […]

30 JANUARY, 2025 Newsletter CLOSED AND ABANDONED MINES MONITORING Contaminated site of Wolverine Mine, Yukon, Canada Closed and old mines represent a huge and largely overlooked problem. Three out of five most contaminated sites in Canada are closed mines with the whopping clean up costs of over $5Bn. In the USA there are over 160,000

17 DECEMBER, 2024 Newsletter InSAR: BUILDING DIFFERENTIAL DEFORMATION (BDD) The PSI technique can be used to monitor deformations over very wide areas. An example is given by the European coverage achieved by the European Ground Motion Service (EGMS). Starting from the EGMS datasets, GeoKinesia and the CTTC (Centre Tecnològic de Telecomunicacions de Catalunya) have proposed

15 NOVEMBER, 2024 Newsletter InSAR: NEW CLUSTERING PROCEDURES AND ACTIVE DEFORMATION AREAS (ADA) The PSI technique can be used to monitor deformations over very wide areas. An example is given by the European coverage achieved by the European Ground Motion Service (EGMS) products. The wide area coverage requires the generation of huge deformation measurement datasets.

25 October, 2024 Newsletter TECHNIQUE IMPROVEMENT WITH NEW WAY OF PHASE RESIDUALS TREATMENT GeoKinesia performs deformation monitoring using a proprietary Persistent Scatterer Interferometry (PSI) InSAR processing technique. The company works continuously to improve its deformation monitoring capabilities. This newsletter concerns a recent improvement of the processing robustness, coverage and density of the deformation measurements. One

16 October, 2024 Newsletter INSAR AND GEOTECHNICAL ANALYSIS Geotechnical analysis is a regulated practice with developed and strictly controlled guidelines or codes: example can be Eurocode-7 (EU) or Geotechnical Site Characterization Publication No. FHWA NHI-16–072 (US). These codes are applied rigorously.The codes provide rules and define procedures for site investigation, including field campaigns, derivation of

13 September, 2024 Newsletter Underground Climate Change In our last Newsletter, we discussed how climate change affects weather patterns and land deformations caused by these changing patterns.Melting permafrost is a well-known phenomenon of this kind affecting vast areas in Canada, the US and Russia, but a new factor was detected recently, nicknamed “underground climate change”,

Newsletter Climate change and new land deformation patterns A few studies demonstrated that climate change leads to changing weather patterns and the frequency of extreme events, such as extreme temperatures, increased precipitation, draughts, floods and hurricanestropical cyclones, storms, typhoons. Average number of hurricanes in the US. Adjustment is made for observation methods. Source: NOAA, 2023;

Newsletter Geohazards: Enhancing Preparedness for a Changing World The recent devastating floods and landslides caused by heavy rains in Eastern Africa, along with the ongoing drought in Southern Africa, disastrous floods in Brazil highlight the urgent need to address the evolving challenges of geohazards. Rufiji river, Tanzania, floods, ESAWhile natural disasters have occurred throughout history,