Ecological Indicators, 2022 Denitrification in groundwater is an important process that helps to maintain environmental standards, yet there are very few studies that determine the spatial variation of denitrification conditions in aquifers on a regional scale.
Tim Wolters +7 more
doaj +1 more source
Drainage rearrangement in an intra-continental mountain belt: a case study from the central South Tian Shan, Kyrgyzstan [PDF]
Earth Surface DynamicsFluvial drainage patterns in orogenic belts reflect interactions among tectonics, climate, and lithology. The central South Tian Shan displays a complex fluvial drainage pattern that shifts from longitudinal (flowing parallel to mountain ranges) in the ...
L. Gong +7 more
doaj +1 more source
Confocal μ-XANES as a tool to analyze Fe oxidation state in heterogeneous samples: the case of melt inclusions in olivine from the Hekla volcano [PDF]
European Journal of MineralogyHere we present a confocal Fe K-edge μ-XANES method (where XANES stands for X-ray absorption near-edge spectroscopy) for the analysis of Fe oxidation state in heterogeneous and one-side-polished samples.
R. Botcharnikov +9 more
doaj +1 more source
Interactions between main channels and tributary alluvial fans: channel adjustments and sediment-signal propagation [PDF]
Earth Surface Dynamics, 2020 Climate and tectonics impact water and sediment fluxes to fluvial systems. These boundary conditions set river form and can be recorded by fluvial deposits.
S. Savi +7 more
doaj +1 more source
Sub-micrometer refractory carbonaceous particles in the polar stratosphere [PDF]
Atmospheric Chemistry and Physics, 2017 Eleven particle samples collected in the polar stratosphere during SOLVE (SAGE III Ozone loss and validation experiment) from January until March 2000 were characterized in detail by high-resolution transmission and scanning electron microscopy (TEM ...
K. Schütze +9 more
doaj +1 more source
H/V spectral ratio analysis and Rayleigh modelization in Eastern Thuringia, Germany
Geofísica Internacional, 2013 Usamos registros de algunas estaciones de la base de datos de la OTSN para caracterizar su respuesta de sitio y para analizar los límites y alcances del modelado de Rayleigh para los cocientes espectrales H/V.
Hortencia Flores +2 more
doaj +1 more source
Characterization of refractory aerosol particles collected in the tropical upper troposphere–lower stratosphere (UTLS) within the Asian tropopause aerosol layer (ATAL) [PDF]
Atmospheric Chemistry and PhysicsAerosol particles with diameters larger than 40 nm were collected during the flight campaign StratoClim 2017 within the Asian tropopause aerosol layer (ATAL) of the 2017 monsoon anticyclone above the Indian subcontinent.
M. Ebert +12 more
doaj +1 more source
Experimental Observation of a Calcium Silicon Double Carbonate
Angewandte Chemie International Edition, EarlyView.High‐pressure and ‐temperature reactions between Ca5(Si2O7)(CO3)2 tilleyite and CO2 carbon dioxide yield the first experimental evidence of the double carbonate Ca2Si(CO3)4 and a new Ca2(C4O10) phase containing tetrahedral [CO4] units. These findings reveal unexpected carbonate chemistry and highlight pathways for carbon incorporation under mantle ...
Benedito Donizeti Botan‐Neto +6 more
wiley +1 more source
Chrome incorporation in high-pressure Fe–Mg oxides [PDF]
European Journal of MineralogyThe occurrence of Cr-bearing oxide phases as inclusions in diamonds and in extraterrestrial materials has the potential to serve as an indicator of formation conditions.
A. B. Woodland +7 more
doaj +1 more source
The Anatomical Record, EarlyView.Abstract The three mammalian auditory ossicles enhance sound transmission from the tympanic membrane to the inner ear. The anterior anchoring of the malleus is one of the key characters for functional classification of the auditory ossicles. Previous studies revealed a medial outgrowth of the mallear anterior process, the processus internus ...
Franziska Fritzsche +2 more
wiley +1 more source