Recent advances in rotational seismology have led to new applications in various geophysical disciplines such as earthquake physics, broadband seismology, seismic exploration, strong ground motion, and earthquake engineering. The progress is mainly driven by the development of new, sensitive rotational sensors that, when combined with classical seismometers and strain sensors, enable the complete observation of seismic ground motion.

The instrumental development overlap with considerable improvements in optical and atom interferometry for inertial rotation and gravity sensing which has led to a variety of improved sensor concepts over the last two decades. Thus, advanced instrumentation enables applications in seismology, geodesy, and fundamental physics.

We invite all contributions on theoretical advances to the seismic wavefield gradient, on novel measurement techniques, and on all aspects of applications in seismic, seismology, geodesy, and fundamental physics.

In this session we search for contributions of general interest within the geodesy community which are not covered by the other sessions.

Topographic data are fundamental to landscape characterization across the geosciences, for monitoring change and supporting process modelling. Over the last decade, the dominance of laser-based instruments for high resolution data collection has been challenged by advances in digital photogrammetry and computer vision, particularly in ‘structure from motion’ (SfM) algorithms, which offer a new paradigm to geoscientists.

High resolution topographic (HiRT) data are now obtained over spatial scales from millimetres to kilometres, and over durations of single events to lasting time series (e.g. from sub-second to decadal-duration time-lapse), allowing evaluation of dependencies between event magnitudes and frequencies. Such 4D-reconstruction capabilities enable new insight in diverse fields such as soil erosion, micro-topography reconstruction, volcanology, glaciology, landslide monitoring, and coastal and fluvial geomorphology. Furthermore, broad data integration from multiple sensors offers increasingly exciting opportunities.

This session will evaluate the advances in techniques to model topography and to study patterns of topographic change at multiple temporal and spatial scales. We invite contributions covering all aspects of HiRT reconstruction in the geosciences, and particularly those which transfer traditional expertise or demonstrate a significant advance enabled by novel datasets. We encourage contributions describing workflows that optimize data acquisition and post-processing to guarantee acceptable accuracies and to automate data application (e.g. geomorphic feature detection and tracking), and field-based experimental studies using novel multi-instrument and multi-scale methodologies. A major goal is to provide a cross-disciplinary exchange of experiences with modern technologies and data processing tools, to highlight their potentials, limitations and challenges in different environments.

Solicited speaker: Kuo-Jen Chang (National Taipei University of Technology) - UAS LiDAR data processing, quality assessment and geosciences prospects

The use of Remotely Piloted Aircraft Systems (RPAS) for geosciences applications has strongly increased in last years. Nowadays the massive diffusion of mini- and micro-RPAS is becoming a valuable alternative to the traditional monitoring and surveying applications, opening new interesting viewpoints. The advantages of the use of RPAS are particularly important in areas characterized by hazardous natural processes, where the acquisition of high resolution remotely sensed data could be a powerful instrument to quickly assess the damages and plan effective rescues without any risk for operators.
In general, the primary goal of these systems is the collection of different data (e.g., images, LiDAR point clouds, gas or radioactivity concentrations, etc.) and the delivery of various products (e.g., 3D models, hazard maps, high-resolution orthoimages, etc.).
The possible use of RPAS has promising perspectives not only for natural hazards, but also in the different field of geosciences, to support a high-resolution geological or geomorphological mapping, or to study the evolution of active processes. The high repeatability of RPAS flight and their limited costs allows the multi-temporal analysis of a studied area. However, methodologies, best practices, advantages and limitations of this kind of applications are yet unclear and/or poorly shared by the scientific community.
This session aims at exploring the open research issues and possible applications of RPAS in geosciences, collecting experiences, case studies, and results, as well as define methodologies and best practices for their practical use. The session will concern the contributions aiming at: i) describing the development of new methods for the acquisition and processing of RPAS dataset, ii) introducing the use of new sensors developed or adapted to RPAS, iii) reporting new data processing methods related to image or point cloud segmentation and classification and iv) presenting original case studies that can be considered an excellent example for the scientific community.

Wed, 10 Apr, 12:45-14:00 / Room E1

Public information:
The dialogue between scientists, institutions, policymakers and the general public is widely recognised as an essential step towards a fair and sustainable society. Nowadays, more than ever in human history, international cooperation is an essential requirement for protecting the planet, advancing science and ensuring an equitable development of the global economy.
Despite its importance, the above dialogue can be a challenge for scientists, who often cannot find a productive connection with governments and politicians. Scientific associations are a key link between researchers and policy makers, as they have the potential to establish a durable and profitable connection with institutions.
The EGU elected the dialogue with society as one of its priority missions. At its General Assembly, the EGU is launching an innovative symposium format, Science and Society (SCS), to host scientific forums specifically dedicated to connecting with high-level institutions and engaging the public and policymakers.
The conversation with Ilaria Capua and Mario Monti will focus on science and politics with a global perspective, and the impact of populism on European integrity and therefore scientific research. The discussion will elaborate on optimal strategies to deliver topical and clear scientific messages to key institutions.
Ilaria Capua is a virologist best known for her research on influenza viruses and her efforts promoting open access to genetic information on emerging viruses. In 2006, Science reported on Capua’s effort towards open access science, stating that she had “renewed the debate about how to balance global health against scientists’ needs to publish and countries’ demands for secrecy". She has been a member of the Italian parliament from 2013 to 2016 and a fake news victim. She is currently a full professor at the University of Florida in Gainesville, Florida, US, and director of the UF One Health Center of Excellence.
Mario Monti served as a European Commissioner from 1995 to 2004, with responsibility for the internal market, services, customs, taxation and competition. He was Prime Minister of Italy from 2011 to 2013, leading a government of national unity to cope with the Italian debt crisis. Monti has also been Rector and is currently President of Bocconi University in Milan. His publications deal mainly with monetary and financial economics, public finance, European integration, competition policy. He is currently lifetime member of the Italian Senate.
During the conversation, Ilaria Capua and Mario Monti will present their vision with two 15-minute talks that will be followed by 20 minutes dedicated to questions from the audience and answers.