Browsing by Author "Poyiadji, Eleftheria"
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- Earth Observation in support of sustainable mining by the Geological Surveys of Europe [Comunicação oral]Publication . Kopačková, Veronika; Herrera, Gerardo; Poyiadji, Eleftheria; Przyłucka, Maria; Quental, Lídia; Salehi, SaraABSTRACT: Current and emerging Earth Observation (EO) technologies have the potential to provide regular top- surface compositional information with a high temporal rate and at high spatial resolution. Earth Observation working group (EOEG) under the EuroGeoSurveys (EGS) has been working on a topic how different type of EO data can be utilized to assess mineral resources as well as to monitor mining impacts and other anthropogenic hazards. Since 2016 the group has been contributing to the global GEO network with the GEO Community Activity (CA) entitled as “Earth Observations for Geohazards, Land Degradation and Environmental monitoring” investigating the feasibility to develop new applications or monitoring systems. Diverse Earth Observation data integration and utilization of the new generation satellite data (e.g., Copernicus data, EnMap) belongs to key topics the expert group has been working on. In addition, through this Community of Activity EOEG is sharing software tools, capacities and knowledge on the exploitation of Copernicus data for geological and anthropogenic hazard assessment and for environmental/mineral mapping. In our presentation diverse case studies will be presented showing how high spectral resolution Earth Observation data can be employed for mineral mapping and assessing environmental impacts of mining including vegetation stress. Moreover, the free toolbox – QUANTools – will be presented allowing to process hyperspectral data for mineral mapping and classification. One of the biggest advantages when using this toolbox is the fact that no prior definition of the endmembers is required, this is a requested routine used for all widely-used spectral mapping techniques. This is indeed a big advantage. As a result, it can increase time/cost efficiency as the validation samples can be collected after image classification targeting, specifically, the identified surface variability (e.g., mapped classes). In the context of new state-of-art satellite sensors and the COPERNICUS program we will also demonstrate how Sentinel-1, Sentinel-2 and WorldView3 data can be used for monitoring of mining impacts (e.g., mine stability, Acid Mine Drainage mapping).
- A Geological Service for Europe: building trust through interdisciplinary and intersectoral collaborationPublication . Hollis, Julie; Calcagno, Philippe; Bertrand, Guillaume; de Oliveira, Daniel Pipa Soares; Negrel, Philippe; Díaz-Martínez, Enrique; La Vigna, Francesco; Poyiadji, Eleftheria; Tonné, Nathalie; Van Heteren, Sytze; Dakin, Nicola; Hinsby, Klaus; Van Der Keur, Peter; Siddiqi, Gunter; Čápová, Dana; Pizzocolo, FrancescoABSTRACT: Geology encompasses all of the Earth sciences and thus is multidisciplinary. It does not respect geopolitical borders, so requires teamwork across disciplines and between nations. Applying geological solutions to climate change increasingly requires transdisciplinary teamwork. This extends well beyond the geosciences to inform on issues of universal concern, e.g., deployment of renewable energy, management of groundwater resources, mitigation of climate-induced geohazards, and more. To achieve sustainability and success in these fields, it is essential to employ knowledge of subsurface, land, and subsea geology for the discovery, tracking, preservation, regulation, and exploitation of resources. This knowledge also supports integrated and coherent surface and subsurface spatial planning and the creation of cohesive laws guided by scientific insights. This in turn requires multi-stakeholder collaboration between scientific and governmental agencies, industry, and civil society, from research design to data and knowledge application. Such a broad spectrum of engagement is at the heart of the concept of a Geological Service for Europe, founded on a long history of collaboration between the Geological Surveys of Europe –extending networks, fostering innovation, sharing knowledge, building capacity and common standards. Given the current lack of public knowledge and negative perceptions of geology, collaborative efforts based on objective science can have a significant impact on building trust. This contribution highlights the collaboration of the Geological Surveys of Europe with non-geoscientific partners in serving society, supporting nature, and delivering the Green Deal.
- Landslide monitoring techniques in the Geological Surveys of EuropePublication . Auflič, Mateja Jemec; Herrera, Gerardo; Mateos, Rosa María; Poyiadji, Eleftheria; Quental, Lídia; Severine, Bernardie; Peternel, Tina; Podolszki, Laszlo; Calcaterra, Stefano; Kociu, Arben; Warmuz, Bartłomiej; Jelének, Jan; Hadjicharalambous, Kleopas; Becher, Gustaf Peterson; Dashwood, Claire; Ondrus, Peter; Minkevičius, Vytautas; Todorović, Saša; Møller, Jens Jørgen; Marturia, JordiABSTRACT: Landslide monitoring is a mandatory step in landslide risk assessment. It requires collecting data on landslide conditions (e.g., areal extent, landslide kinematics, surface topography, hydrogeometeorological parameters, and failure surfaces) from different time periods and at different scales, from site-specific to local, regional, and national, to assess landslide activity. In this analysis, we collected information on landslide monitoring techniques from 17 members of the Earth Observation and Geohazards Expert Group (from EuroGeoSurveys) deployed between 2005 and 2021. We examined the types of the 75 recorded landslides, the landslide techniques, spatial resolution, temporal resolution, status of the technique (operational, non-operational), time of using (before the event, during the event, after the event), and the applicability of the technique in early warning systems. The research does not indicate the accuracy of each technique but, rather, the extent to which Geological Surveys conduct landslide monitoring and the predominant techniques used. Among the types of landslides, earth slides predominate and are mostly monitored by geological and engineering geological mapping. The results showed that Geological Surveys mostly utilized more traditional monitoring techniques since they have a broad mandate to collect geological data. In addition, this paper provides new insights into the role of the Geological Surveys on landslide monitoring in Europe and contributes to landslide risk reduction initiatives and commitments (e.g., the Kyoto Landslide Commitment 2020).
- Landslides monitoring techniques review in the Geological Surveys of EuropePublication . Auflič, Mateja Jemec; Herrera, Gerardo; Mateos, Rosa María; Poyiadji, Eleftheria; Quental, Lídia; Severine, Bernardie; Peternel, Tina; Podolszki, Laszlo; Iadanza, Carla; Kociu, Arben; Warmuz, Bartłomiej; Jelének, Jan; Hadjicharalambous, Kleopas; Becher, Gustaf Peterson; Dashwood, Claire; Liščák, Pavel; Minkevičius, Vytautas; Todorović, Saša; Møller, Jens JørgenABSTRACT: Landsliding is the downslope movement of surface material under the force of gravity, initiated when gravitational and other types of shear stresses within the slope exceed the shear strength of the material that forms the slope. Often, landslides pose a physical and environmental threat to communities living in landslide-prone areas. While much landslide research focuses on monitoring techniques to define the background of the landslide (extent, volume, velocity, magnitude) one of the main goals of the Geological Surveys (GS) are to support and understand the regional and local geology to identify areas susceptible to landslides.
- Mapping and understanding Earth: Open access to digital geoscience data and knowledge supports societal needs and UN sustainable development goalsPublication . Hinsby, Klaus; Négrel, Philippe; de Oliveira, Daniel Pipa Soares; Barros, Renata; Venvik, Guri; Ladenberger, Anna; Griffioen, Jasper; Piessens, Kris; Calcagno, Philippe; Götzl, Gregor; Broers, Hans Peter; Gourcy, Laurence; van Heteren, Sytze; Hollis, Julie; Poyiadji, Eleftheria; Čápová, Dana; Tulstrup, JørgenABSTRACT: Open access to harmonised digital data describing Earth’s surface and subsurface holds immense value for society. This paper highlights the significance of open access to digital geoscience data ranging from the shallow topsoil or seabed to depths of 5 km. Such data play a pivotal role in facilitating endeavours such as renewable geoenergy solutions, resilient urban planning, supply of critical raw materials, assessment and protection of water resources, mitigation of floods and droughts, identification of suitable locations for carbon capture and storage, development of offshore wind farms, disaster risk reduction, and conservation of ecosystems and biodiversity. EuroGeoSurveys, the Geological Surveys of Europe, have worked diligently for over a decade to ensure open access to harmonised digital European geoscience data and knowledge through the European Geological Data Infrastructure (EGDI). EGDI acts as a data and information resource for providing wide-ranging geoscience data and research, as this paper demonstrates through selected research data and information on four vital natural resources: geoenergy, critical raw materials, water, and soils. Importantly, it incorporates near real-time remote and in-situ monitoring data, thus constituting an invaluable up-to-date database that facilitates informed decision-making, policy implementation, sustainable resource management, the green transition, achieving UN Sustainable Development Goals (SDGs), and the envisioned future of digital twins in Earth sciences. EGDI and its thematic map viewer are tailored, continuously enhanced, and developed in collaboration with all relevant researchers and stakeholders. Its primary objective is to address societal needs by providing data for sustainable, secure, and integrated management of surface and subsurface resources, effectively establishing a geological service for Europe. We argue that open access to surface and subsurface geoscience data is crucial for an efficient green transition to a net-zero society, enabling integrated and coherent surface and subsurface spatial planning.
- Pan-European geological data, information, and knowledge for a resilient, sustainable, and collaborative futurePublication . Hollis, Julie; Bricker, Stephanie; Čápová, Dana; Hinsby, Klaus; Krenmayr, Hans-Georg; Negrel, Phillippe; de Oliveira, Daniel Pipa Soares; Poyiadji, Eleftheria; van Gessel, Serge; van Heteren, Sytze; Venvik, GuriABSTRACT: Many fields of research relevant to climate-change-related policy are grounded in geological sciences – far more than is generally recognised by the public or policy makers. These fields include management of marine environments, urban development, groundwater, landslide risk, understanding the geochemistry of soils and water, and securing raw materials. Through the concerted collaborative efforts, over many years, of EuroGeoSurveys – the Geological Surveys of Europe – national datasets bearing on these and other areas have been harmonised at European scale and delivered through an online digital platform, the European Geological Data Infrastructure. This vast store of baseline data, information, and knowledge is crucial for informed pan-European decision making and is considered the core of a future Geological Service for Europe.
- Role of Geological Surveys of Europe in landslide monitoringPublication . Auflič, Mateja Jemec; Herrera, Gerardo; Mateos, Rosa María; Poyiadji, Eleftheria; Quental, Lídia; Severine, Bernardie; Peternel, Tina; Podolszki, Laszlo; Calcaterra, Stefano; Kociu, Arben; Warmuz, Bartłomiej; Jelének, Jan; Hadjicharalambous, Kleopas; Becher, Gustaf Peterson; Dashwood, Claire; Ondrus, Peter; Minkevičius, Vytautas; Todorović, Saša; Møller, Jens Jørgen; Marturia, JordiABSTRACT: This work was developed by the Earth Observation and Geohazards Expert Group from EGS and provides an overview of landslide monitoring techniques from 2005 to 2021. Based on the questionnaire, the following objectives were set: (1) to identify the type of monitored landslides, (2) to identify the landslide monitoring techniques, (3) to identify the spatial resolution, temporal resolution, and status of the technique (operational, non-operational), time of using (before the event, during the event, after the event), and applicability of the technique to the early warning system.