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Anzeige der Dokumente 2791-2810 von 6924
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Heterogeneous vesiculation of 2011 El Hierro xeno-pumice revealed by X-ray computed microtomography
(Bulletin of Volcanology, 2016)During the first week of the 2011 El Hierro submarine eruption, abundant light-coloured pumiceous, high-silica volcanic bombs coated in dark basanite were found floating on the sea. The composition of the light-coloured ... -
Hexactinellide Schwämme aus der phosphoritischen Kalksteinfazies der Numismalismergel-Formation bei Pavelsbach/Oberpfalz (Pliensbachium)
(71)
Ein trichterförmiger hexactinellider Schwamm von 18 cm Durchmesser wird aus einer phosphoritischen Kalksteinbank der tieferen Numismalismergel-Formation exemplarisch für die dort häufigen Hexactinellida beschrieben. Hexactine ... -
Hf-W chronology of a macrochondrule from the L5/6 chondrite Northwest Africa 8192
; ; ; ; ; Berndt, Jasper; (Meteoritics & Planetary Science, 2020)
A large, igneous-textured, and 2 cm-sized spherical object from the L5/6 chondrite NWA 8192 was investigated for its chemical composition, petrography, O isotopic composition, and Hf-W chronology. The petrography and ... -
Hidden in plain sight: A microanalytical study of a Middle Stone Age ochre piece trapped inside a micromorphological block sample
; ; ; Mentzer, Susan M.; Miller, Christopher E.; ; (Geoarchaeology, 2020-12-15)
A complete Middle Stone Age ochre piece was unintentionally collected and fully preserved within a micromorphological block sample intended to characterise a 74 ± 3 ka occupation horizon at Blombos Cave, South Africa. ... -
Hidden Potential in Predicting Wintertime Temperature Anomalies in the Northern Hemisphere
; ; ; ; ; ; (Geophysical Research Letters, 2022-10-11)
Variability of the North Atlantic Oscillation (NAO) drives wintertime temperature anomalies in the Northern Hemisphere. Dynamical seasonal prediction systems can skilfully predict the winter NAO. However, prediction of the ... -
High field strength element systematics and Lu-Hf & Sm-Nd garnet geochronology of orogenic eclogites
(Univ. Frankfurt (Main), 2008)Concerning the Bulk Silicate Earth (BSE), the depleted mantle and the continental crust are thought to balance the budget of refractory and lithophile elements, resulting in complementary trace element patterns. However, ... -
High geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data
; ; (Communications Earth & Environment, 2021-08-18)
Geothermal heat flow in the polar regions plays a crucial role in understanding ice-sheet dynamics and predictions of sea level rise. Continental-scale indirect estimates often have a low spatial resolution and yield largest ... -
High groundwater levels: Processes, consequences, and management
; ; ; (Wiley Interdisciplinary Reviews: Water, 2022-08-19)
In recent years, the issue of high groundwater levels has caught attention. Unfavorable consequences of high groundwater levels are especially damage to buildings, infrastructure, and the environment. Processes that lead ... -
High Heat Flow Anomaly Within the St Paul Fracture Zone: Heat Advection and/or Inherent Thermal Structure?
; ; ; (Geochemistry, Geophysics, Geosystems, 2023-04-24)
Abstract Heat flow across oceanic transform faults (TFs) and fracture zones (FZs) has rarely been ...
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High Precision Femtosecond Laser Ablation ICP‐MS Measurement of Benthic Foraminiferal Mn‐Incorporation for Paleoenvironmental Reconstruction: A Case Study From the Plio‐Pleistocene Caribbean Sea
; ; ; ; ; ; ; ; ; (Geochemistry, Geophysics, Geosystems, 2022-10-04)
Closure of the Central American Seaway (CAS) and hydrology of the Caribbean Sea triggered Northern Hemisphere Glaciation and played an important role in the Pliocene to modern‐day climate re‐establishing the deep and surface ... -
High Productivity at High Latitudes? Photosynthesis and Leaf Ecophysiology in Arctic Forests of the Eocene
; ; (Paleoceanography and Paleoclimatology, 2023-08-26)
Abstract The Arctic forests of the Eocene, which thrived under elevated CO2, a temperate ...
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High resolution aerial and field mapping of thermal features in Ragged Hills, Yellowstone National Park
(Freiberg Online Geosciences; Vol. 11.2004)High resolution aerial images taken in a cost and time effective way from low-flying platforms were used to map a hydrothermal area in the Yellowstone National Park. The mapping area called Ragged Hills is located in the ... -
High resolution multi-wavelength study of active galaxies
(Univ. Köln, 2005)This PhD thesis presents a study of active galaxies carried out from cm- to mm-wavelengths with high angular resolution. The mechanism of the activity in these objects is supposed to be strongly correlated with the accretion ... -
High resolution spectroscopy of photospheric bright points
(Univ. Freiburg (Breisgau), 2006)Photospheric bright points are proxies for small-scale magnetic flux concentrations.These magnetic elements are thought to be the building blocks of the solar magnetic field and are important to understand many physical ... -
High spatial‐resolution monitoring to investigate nitrate export and its drivers in a mesoscale river catchment along an anthropogenic land‐cover gradient
; ; ; (Hydrological Processes, 2021-12-14)
Nitrate monitoring is commonly conducted with low‐spatial resolution, only at the outlet or at a small number of selected locations. As a result, the information about spatial variations in nitrate export and its drivers ... -
High spatio‐temporal resolution measurements of cohesive sediment erosion
; Inskeep, Caleb; ; Schmid, Gerhard; ; (Earth Surface Processes and Landforms, 2020-06-14)
In this study, we present a novel approach to measure fundamental processes of cohesive sediment erosion. The experimental setup consists of a laboratory erosion flume (SETEG) and a photogrammetric method to detect sediment ... -
High-resolution climate reconstruction for the holocene based on growth chronologies of the bivalve Arctica Islandica from the North Sea
(Univ. Bremen, 2004)High-resolution climate reconstruction, North Sea, annual banded proxy, Arctica islandica. - Until now, there has been no published documentation of North Sea year-to-year climate variability during the last 8000 to 10000 ... -
High-Resolution Imaging of Texture and Microstructure by the Moving Detector Method
(Textures and Microstructures, 2003)In order to describe texture and microstructure of a polycrystalline material completely, crystal orientation g={?1F?2} must be known in all points x={x1?x2?x3} of the material. This can be achieved by locationresolved ... -
High-Resolution Imaging of Texture and Microstructure by the Moving Detector Method
(Textures and microstructures, 2003)In order to describe texture and microstructure of a polycrystalline material completely, crystal orientation g={?1F?2} must be known in all points x={x1?x2?x3} of the material. This can be achieved by locationresolved ... -
High-resolution observations of the solar photosphere and chromosphere
(Univ. Freiburg (Breisgau), 2007)Observations of the sun are almost always impaired by the turbulent motion of air in Earth's atmosphere. The turbulence would limit the theoretical resolution of modern large telescopes to that of amateur telescopes without ...
