Monitoring and Understanding the Earth’s Change by Geodetic Methods
A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Remote Sensors".
Deadline for manuscript submissions: closed (15 June 2022) | Viewed by 34374
Special Issue Editors
Interests: space geodesy; satellite dynamics; earth rotation theory and models; space sciences; Earth sciences; astrometry; numerical methods; celestial mechanics
Special Issues, Collections and Topics in MDPI journals
Interests: space geodesy; earth observation; sea level, ocean geostrophy; satellite altimetry; satellite gravimetry
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
Contemporary geodetic observations allow measurement of positions, shape, and gravity in the Earth’s system and their time variations with unprecedented accuracy. Besides, all the Earth’s observations are referred to a terrestrial reference frame, which is conventionally realized with data from four main space geodesy techniques: Global Navigation Satellite Systems (GNSS), Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR), and Doppler Orbitography and Radio Positioning Integrated by Satellite (DORIS). The same data, coming from sensing quasars to satellites, are used for the consistent realization of the celestial reference frame and determination of the time-varying Earth’s rotation and main dynamical parameters, i.e., center of mass and inertia tensor. Satellite altimetry is crucial for monitoring sea level variations since 1993, whilst the Gravity Recovery and Climate Experiment (GRACE) satellite mission opened a new era in inferring the Earth’s mass redistributions and understanding the water cycle better.
The range of applications is extended when space-based data are analysed jointly with those provided by in situ techniques, leading also to more accurate results. Geodetic methods allow monitoring, getting deeper insight, and developing models of a wide class of processes of the Earth system that interact with the so-called three pillars of modern geodesy, namely geometry, kinematics, and gravity. They provide information of scientific and societal value on various smooth or sudden changes or natural hazards, like ocean and continental water, ice sheets, soil moisture, droughts, denudation, earthquakes, tsunamis, etc.
This Special Issue welcomes contributions addressing:
- Monitoring of Earth system components from geodetic techniques: VLBI, GNSS, SLR, DORIS, LLR (lunar laser ranging), etc.
- Monitoring of Earth system components from geodetic satellite observations: Altimetry, gravity field (GRACE and GRACE Follow-On), magnetic field (CHAMP, SWARM), etc.
- Determination of global Earth parameters and features at non-global scales
- Current findings, monitoring capabilities, and prospects of geodetic methods for getting further insight into the Earth’s change
- Impact of reference frames realization, station motion modelling and mathematical procedures of analysis
- State-of-the-art of well-established geodetic techniques and emerging instruments: laser rings, in situ or onboard geopotential-sensing optical atomic clocks, etc.
- Related geophysical models
Prof. Dr. José M. Ferrándiz
Dr. Isabel Vigo
Guest Editor
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Keywords
- Remote sensing
- Earth system monitoring
- geodetic VLBI and GNSS
- SLR
- gravity field variations
- near-surface geophysics
- geocenter motion
- reference frames
- Earth rotation
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