Mioara Mandea – författare

On the centenary of the International Union of Geodesy and Geophysics, this book reviews the state-of-the-art research in geomagnetism, aeronomy and space weather. Written by eminent researchers from these fields, it summarises the advances in research over the past 100 years, and looks ahead to current and emerging studies on Earth's magnetic field. It provides a comprehensive overview of the generation of Earth's magnetic field, its history and its response to external forces. Starting at the centre of the Earth, the reader is taken on a journey from the interior core and mantle, through the upper atmosphere and magnetosphere, before reaching the Sun's atmosphere and corona. The applications of this research are also discussed, particularly the societal impact of solar activity on critical infrastructures in our increasingly technologically dependant society. This book provides a valuable resource and reference to academic researchers and students in geomagnetism and aeronomy.

The Sentinel missions of the COPERNICUS Programme of the European Union, as well as other Earth Observation missions, provide new opportunities for systematic monitoring of natural and man-made hazards and disasters that can highly impact human societies.The contributions collected in this book address a broad range of geohazards observable from space, including earthquakes, volcanic hazards, extreme events (e.g. storm surges, floods and droughts), fires, pollution, tipping points in physical and biological systems, etc.. They provide information on how space observations can improve our understanding of the driving mechanisms at the origin of such geohazards, and of their mutual interactions. Focus is given on the expected added-value information obtained by combining different types of space-based and in situ observations as well as model results.The chapters "Space-Based Earth Observations for Disaster Risk Management", "Earth Observation for theAssessment of Earthquake Hazard, Risk and Disaster Management", "Earth Observation for Crustal Tectonics and Earthquake Hazards", "Earth Observations for Monitoring Marine Coastal Hazards and Their Drivers", "Air Pollution and Sea Pollution Seen from Space" are available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.Previously published in Surveys in Geophysics, Volume 41, Issue 6, 2020

The Sentinel missions of the COPERNICUS Programme of the European Union, as well as other Earth Observation missions, provide new opportunities for systematic monitoring of natural and man-made hazards and disasters that can highly impact human societies.The contributions collected in this book address a broad range of geohazards observable from space, including earthquakes, volcanic hazards, extreme events (e.g. storm surges, floods and droughts), fires, pollution, tipping points in physical and biological systems, etc.. They provide information on how space observations can improve our understanding of the driving mechanisms at the origin of such geohazards, and of their mutual interactions. Focus is given on the expected added-value information obtained by combining different types of space-based and in situ observations as well as model results.The chapters "Space-Based Earth Observations for Disaster Risk Management", "Earth Observation for theAssessment of Earthquake Hazard, Risk and Disaster Management", "Earth Observation for Crustal Tectonics and Earthquake Hazards", "Earth Observations for Monitoring Marine Coastal Hazards and Their Drivers", "Air Pollution and Sea Pollution Seen from Space" are available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.Previously published in Surveys in Geophysics, Volume 41, Issue 6, 2020

This book aims then to describe in a comprehensible way efforts made over centuries of measuring and understanding the magnetic declination. The book also highlights some important characteristics of the Earth’s magnetic field thanks to the declination measurements. Some applications and societal implications are also underlined.Anyone living in the 21st century knows the best way to navigate is by using a smartphone App.  Decades and centuries ago, in order to find the same way a magnificent instrument was used: the compass.  Despite many being aware of the compass, not everyone appreciates that throughout the ages of exploration, sailors and explorers linked their lives and great discoveries to the  magnetic needle.  Furthermore, is there an awareness of  the Earth’s physical mechanism behind the changes in time and space of the direction indicated by the compass? The magnetic declination is at the center of this book and it helps the reader to understand how to navigate in time and space. The book provides the history of the compass and magnetic declination leading the reader to the understanding of our magnetic planet.This book is designed for those who are fascinated by the long history of geomagnetism. This book relies on reader’s knowledge of elementary scientific concepts, and introduces the geomagnetism concepts as they evaluated in time. The focus is on some basic concepts and physical processes in order to understand the evolution of a specific element of the geomagnetic field, the declination. The primary audience may have just started an interest in the geomagnetism and history of science, as students and researchers. Some readers may have an interest that only touches the geomagnetism, as navigators, geophysicists, historians.

During the recent decades, space missions (e.g., CHAMP, GOCE, GRACE and Swarm) have been developed by space agencies in Europe and the USA to measure the Earth’s gravity and magnetic fields and their spatio-temporal variations. These successful missions have already provided a wealth of groundbreaking results about the permanent and time-variable gravity and magnetic fields of the Earth. However, more can be learned about the Earth’s structure by combining data of the gravity and magnetic fields, together with Earth’s rotation data routinely measured using space geodesy techniques, as well as with the most up-to-date modelling of the Earth's internal structure. Use in synergy of these global observables and model data represents a unique way to further investigate the physics of the deep Earth's interior. In addition to the well-known correlation between Earth’s rotation and magnetic field observed at interannual and decadal time scales, recent studies have reported unexpected correlation between spatio-temporal changes of the gravity field and magnetic field, also at interannual time scale. These changes may result from processes occurring in the liquid core and at the core-mantle boundary. This book gathers a series of chapters that provide state-of-the art overviews on the gravity field, magnetic field and Earth’s rotation observations, and on their interpretation in terms of the deep Earth’s structure, as well as on core dynamics and processes at the core-mantle boundary. The chapters 'Gravity Variations and Ground Deformations Resulting from Core Dynamics', 'Rapid Variations of Earth’s Core Magnetic Field', 'A Dynamical Prospective on Interannual Geomagnetic Field Changes', 'Core Eigenmodes and their Impact on the Earth’s Rotation', 'Earth’s Rotation: Observations and Relation to Deep Interior', 'Interiors of Earth-Like Planets and Satellites of the Solar System', 'Correction to: Interiors of Earth-like planets and satellites of the Solar System', 'Fluid Dynamics Experiments for Planetary Interiors', 'Structure, Materials and Processes in the Earth’s Core and Mantle', 'Correction to: Structure, Materials and Processes in the Earth’s Core and Mantle' and 'Applications and Challenges of GRACE and GRACE Follow-On Satellite Gravimetry' are available open access under a Creative Commons Attribution 4.0 International License via link.springer.com. Previously published in Surveys in Geophysics, Volume 43, Issue 1, 2022