Papers nuevos sobre Otra ciencia de la Tierra
3 papers nuevos sobre otra ciencia de la tierra en los últimos 7 días, dentro de Tierra y clima. Acá están los 3 que Pipette considera más valiosos, con el resultado principal en palabras de sus autores.
Lo mejor de la semana
Nitrogen and intramolecular carbon isotopic measurements of β-alanine in samples from asteroid Bennu and the Murchison meteorite
These differences are difficult to reconcile with recognized parent-body processes and suggest that nitrogen and intramolecular carbon isotopic measurements could provide direct geochemical evidence for spatial heterogeneity in organic synthesis across the protoplanetary disk and new constraints on the chemical environments and precursor reservoirs that gave rise to extraterrestrial amino acids.
Revista con revisión por paresAfirmaciones fuertes, leer con cuidadoDetermination of Physical Height Differences from Time Transfer via the ACES Mission -- A Simulation Study
The results show that optical links enable faster convergence and can achieve height accuracies at the decimeter level within a few days and at the centimeter level over longer periods, while microwave links are more strongly affected by noise and bias contributions.
PreprintA Survey of Electron Anisotropies in the Magnetosphere: Dependence on Solar Wind Pressure and Kp
Using 161,300 3-s resolution electron measurements from THEMIS A and D, we find that field-aligned anisotropies are most prominent at low energies (30--200 eV) and occur over nearly all and MLT, with the largest values concentrated in the dayside/postnoon plasmasphere, while perpendicular anisotropies dominate at higher energies (1--30 keV) and are largest and most probable in a narrower band from 5--10 with a pronounced dayside/prenoon bias.
Preprint