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Pore Space Topology Controls Ultrasonic Waveforms in Dry Volcanic Rocks
(
- Geophysical Research Letters
, 2022-09-15)
Pore space controls the mechanical and transport properties of rocks. At the laboratory scale, seismic modeling is usually performed in relatively homogeneous settings, and the influence of the pore space on the recorded ...
Multi‐Ion Oscillitons—Origin of Coherent Magnetospheric EMIC Waves
(
- Journal of Geophysical Research: Space Physics
, 2022-10-02)
The recent spacecraft observations by MMS and Van Allen Probes associated with electromagnetic ion cyclotron (EMIC) waves in the Earth magnetosphere emphasize the important role of multi‐ion plasma composition for generation ...
Tropical Instability Waves and Wind‐Forced Cross‐Equatorial Flow in the Central Atlantic Ocean
(
- Geophysical Research Letters
, 2022-09-29)
Based on velocity data from a long‐term moored observatory located at 0°N, 23°W we present evidence of a vertical asymmetry during the intraseasonal maxima of northward and southward upper‐ocean flow in the equatorial ...
Determining the Origin of Tidal Oscillations in the Ionospheric Transition Region With EISCAT Radar and Global Simulation Data
(
- Journal of Geophysical Research: Space Physics
, 2022-09-30)
At high‐latitudes, diurnal and semidiurnal variations of temperature and neutral wind velocity can originate both in the lower atmosphere (UV or infrared absorption) and in the thermosphere‐ionosphere (ion convection, EUV ...
Teleconnection Patterns of Different El Niño Types Revealed by Climate Network Curvature
(
- Geophysical Research Letters
, 2022-09-09)
The diversity of El Niño events is commonly described by two distinct flavors, the Eastern Pacific (EP) and Central Pacific (CP) type. While the remote impacts, that is, teleconnections, of EP and CP events have been studied ...
Using Principal Component Analysis of Satellite and Ground Magnetic Data to Model the Equatorial Electrojet and Derive Its Tidal Composition
(
- Journal of Geophysical Research: Space Physics
, 2022-09-25)
The intensity of the equatorial electrojet (EEJ) shows temporal and spatial variability that is not yet fully understood nor accurately modeled. Atmospheric solar tides are among the main drivers of this variability but ...
Combination Strategy for the Geocentric Realization of Regional Epoch Reference Frames
(
- Journal of Geophysical Research: Solid Earth
, 2022-10-25)
For high‐resolution regional geodetic applications, the International Terrestrial Reference Frame (ITRF) is complemented by regional densifications. These are realized either as multi‐year solutions related to a tectonic ...
Earthquake Database of Germany
(
- 5th International Colloquium Historical Earthquakes, Paleoseismology, Neotectonics and Seismic Hazard, 11 to 13 October 2017, Hannover, Germany - Abstracts
, 2018)
Earthquake Database of Germany
Diethelm Kaiser, Gernot Hartmann
Federal Institute for Geosciences and Natural Resources, Hannover, Germany
The earthquake catalogue for Germany (Leydecker 2011) was integrated in the ...
Dissolved gases in the deep North Atlantic track ocean ventilation processes
(
- Proceedings of the National Academy of Sciences
, 2023)
Gas exchange between the atmosphere and ocean interior profoundly impacts global climate and biogeochemistry. However, our understanding of the relevant physical processes remains limited by a scarcity of direct observations. ...
An ambitious new mission seeks the origin of the moons of Mars
(
- Proceedings of the National Academy of Sciences
, 2023)
Two mysterious moons whirl around Mars. Despite the many missions to the planet, not a single one has focused on its satellites — or, rather, not a single successful one. Three previous Martian moon explorers, launched by ...