Agnew, D.C. An Improbable Observation of the Diurnal Core Resonance -- Bán, D., Mentes, G., Kis, M., and Koppán, A. Observation of the Earth Liquid Core Resonance by Extensometers -- Varga, P., Grafarend, E., and Engels, J. Relation of Different Type Love–Shida Numbers Determined with the Use of Time-Varying Incremental Gravitational Potential -- Varga, P., and Grafarend, E. Influence of Tidal Forces on the Triggering of Seismic Events -- Ruotsalainen, H. Interferometric Water Level Tilt Meter Development in Finland and Comparison with Combined Earth Tide and Ocean Loading Models -- Virtanen, H., and Raja-Halli, A. Parallel Observations with Three Superconducting Gravity Sensors During 2014–2015 at Metsähovi Geodetic Research Station, Finland -- Amoruso, A., Crescentini, L., Bayo, A., Fernández Royo, S., and Luongo, A. Two High-Sensitivity Laser Strainmeters Installed in the Canfranc Underground Laboratory (Spain): Instrument Features from 100 to 0.001 mHz -- Oreiro, F.A., Wziontek, H., Fiore, M.E., D’Onofrio, E.E., and Brunini, C. Non-Tidal Ocean Loading Correction for the Argentinean-German Geodetic Observatory Using an Empirical Model of Storm Surge for the Rio de la Plata -- Weise, A., and Jahr, T. The Improved Hydrological Gravity Model for Moxa Observatory, Germany -- Grillo, B., Braitenberg, C., Nagy, I., Devoti, R., Zuliani, D., and Fabris, P. Cansiglio karst Plateau: 10 years of geodetic-hydrological observations in seismically active Northeast Italy -- Vinogradov, E., Gorbunova, E., Besedina, A., and Kabychenko, N. Earth Tide Analysis Specifics in Case of Unstable Aquifer Regime -- Rosat, S., Escot, B., Hinderer, J., and Boy, J.-P. Analyses of a 426-Day Record of Seafloor Gravity and Pressure Time Series in the North Sea -- Yu, H., Guo, J., Kong, Q. Chen, X. Gravity tides extracted from relative gravimeter data by combining empirical mode decomposition and independent component analysis -- Crossley, D., Calvo, M., Rosat, S., & Hinderer, J. More thoughts on AG-SG comparisons and SG scale factor determinations -- Karbon, M., Balidakis, K., Belda, S., Nilsson, T., Hagedoorn, J., Schuh, H. Long- term evaluation of ocean tidal variation models of polar motion and UT1 -- Gruszczynska, M., Rosat, S., Klos, A., Gruszczynski, M., and Bogusz, J. Multichannel Singular Spectrum Analysis in the estimates of common environmental effects affecting GPS observations -- Klos, A., Gruszczynska, M., Bos, M.S., Boy, J.-P., and Bogusz, J. Estimates of Vertical Velocity Errors for IGS ITRF2014 Stations by Applying the Improved Singular Spectrum Analysis Method and Environmental Loading Models -- Gruszczynski, M., Klos, A., Bogusz, J. A filtering of incomplete GNSS position time series with probabilistic Principal Component Analysis -- Rossi, G., Fabris, P., and Zuliani, D. Overpressure and Fluid Diffusion Causing Non-hydrological Transient GNSS Displacements -- Milyukov, V., Rogozhin, E., Gorbatikov, A., Mironov, A., Myasnikov, A., and Stepanova, M. Contemporary State of the Elbrus Volcanic Center (The Northern Caucasus) -- Morsut, F., Pivetta, T., Braitenberg, C., and Poretti, G. Strain Accumulation and Release of the Gorkha, Nepal, Earthquake (Mw 7.8, 25 April 2015).This volume treats the key aspects that must be known when dealing with continuous space geodetic or terrestrial geodetic observations. The signals of Earth core resonance are discussed, as well as tidal effects on Earth polar motion and on earthquake triggering. Hydrologic loading, be it ocean tides or subsurface water flows, is discussed. These signals compete with crustal deformation observations of earthquakes (e.g., Gorkha 2015) during interseismic periods, and on volcanoes (Elbrus, Caucasus). The instrumentation that is covered includes superconducting gravimeters, continuous seafloor gravimeters, interferometric tilt and strain meters, and GNSS networks. The articles give an up-to-date account of research in which the Earth tides are a benchmark signal for the sophisticated instrumentation mounted on satellites or the surface, observing time-variable signals of an evolving Earth. Scientists studying the earthquake cycle and geodetic monitoring will find useful material. For students in the geosciences, the collection offers a good overview of the broad spectrum of topics related to the Earth geodetic monitoring. The chapters “A Filtering of Incomplete GNSS Position Time Series with Probabilistic Principal Component Analysis”, “Interferometric Water Level Tilt Meter Development in Finland and Comparison with Combined Earth Tide and Ocean Loading Models” and “Multichannel Singular Spectrum Analysis in the Estimates of Common Environmental Effects Affecting GPS Observations” are available open access under a CC BY 4.0 License via link.springer.com.