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Showing 13051 to 13100 of 22070 works
Trapped Particle Motion In Magnetodisc Fields
The spatial and time characterisation of trapped charged particle trajectories in magnetospheres has been extensively studied using dipole magnetic field structures. Such studies …
Preliminary earthquake detections from seismic stations installed on Bioko Island, Equatorial Guinea
Equatorial Guinea’s Bioko Island is located in the Atlantic Ocean off the west coast of Cameroon. Bioko is a volcanic island and the first off-shore expression of the Cameroon Vol…
Confirming Archaeological Excavation Results with Ground Penetrating Radar: The Main Courtyard of Corvin Castle
The conservation of historic cultural heritage sites is an endeavor that often brings together a diverse group of methods and interests. Castelul Corvinilor, also called Corvin’s …
GEOLOGY-IMPROVING INPUTS AND OUTPUTS
Nowadays, geology has a big “social” problem. Starting in the field of education where the science of geology is less well taught, so that society knows less about geology and its…
Arctic-COLORS (Arctic-COastal Land Ocean inteRactionS) Field Campaign Scoping Study Update and Plans
The realization that changes within the Arctic have profound impacts on ecosystems and human populations across the globe has motivated greater attention. Yet major gaps remain in…
Velocity of E region SuperDARN echoes and ExB plasma drift
Rankin Inlet (RKN) SuperDARN radar observations simultaneously with the Resolute Bay Incoherent scatter radar in nearly coinciding beams are considered to investigate the relation…
A neural network approach to polarimetric observations of aerosols above clouds - design, demonstration, and comparison…
We present a neural network (NN) based algorithm for the retrieval of cloud and aerosol properties from above cloud aerosol (ACA) scenes. The large state space explored in ACA sce…
AN ESTIMATE OF THE VOLUME OF PHANEROZOIC ICE
We live in an “Ice House” world that has extensive ice cover at both poles. However, it has not always been this way. During the last 540 million years there have been only 4 othe…
Sediment sampling in Large Rivers; Experiences from the Kasai River in the Congo Basin
Land use change due to population growth and an increase in anthropogenic activities such as logging and mining (mostly illegal) have led to an increase in the sediment load of th…
Preliminary flow records from small, mountainous channels on the Olympic Peninsula, Washington State
Channels and the water they convey control the spatial extent of aquatic ecosystems and the evolution of landscapes. Over geologic time scales (millions of years), flow rates have…
A Fully Coupled Surface Water Storage and Soil Water Dynamics Model for Characterizing Hydroperiod of Geographically Is…
Hydrological modeling of wetlands is important for reliable estimation of biogeochemical processes in soils subject to periodically inundating conditions. The present study has de…
μ-CT-Study of CO2-Gas Exsolution caused by Hydrophobic Nucleation Sites
Background: Gas exsolution from supersaturated water injection (SWI) into porous media is of primary interest and has important applications (CCS, residual NAPL-remediation, CO2-e…
Very Large Array Measurements of Coronal Angular Broadening
In support of our ongoing program to measure coronal magnetic fields using Faraday rotation (the rotation of the plane of polarization when linearly polarized light propagates thr…
Regional SH Westerly Wave Variability and Cape Town's "Day Zero'' Drought
The recent severe “Day Zero” drought (2015-2017) over the winter rainfall zone (WRZ) of South Africa has highlighted low-frequency winter climate variability, possible trends and …
Firn densification in the accumulation zone of Kaskawulsh Glacier, Yukon Territory, Canada
As sources of fresh water and critical components of the global climate system, terrestrial glaciers are important features to monitor, particularly in light of anthropogenic clim…
Drought in Africa: Understanding and Exploiting the Demand Perspective Using a New Evaporative Demand Reanalysis
In operational analyses of the surface moisture imbalance that defines drought, the supply aspect has generally been well characterized by precipitation; however, the same count b…
The development of the theoretical basics for the detection of clear air turbulence with the aid of airborne lidars
Clear air turbulence (CAT) is a serious threat for civil aviation flights. In the years 2009 through 2015, with the support of the European Commission, as a part of the 7th Framew…
North American Landscape Evolution: Insights from Stratigraphy, Thermochronology and Geomorphology
Reconstructing patterns of topographic evolution is key to our understanding of the various processes responsible for landscape development. Suites of existing geodynamic models s…
A Significant Finding of New Morphological Type of Transpolar Arc: Nightside Distorted Transpolar Arc
Based on a large database of Wideband Imaging Camera (WIC), which is a part of Far Ultraviolet (FUV) instrument, onboard the Imager for Magnetopause-to-Aurora Global Exploration (…
Groundwater exploration in crystalline basement complex using seismic refraction and electrical resistivity tomography:…
Groundwater occurrence in crystalline basement complex is mainly due to the development of secondary porosity and permeability arising from the weathering and fracturing of the lo…
Evidences of Large pyramid-like structure predating 10,000 Year BP at Mount Padang, West Java, Indonesia: Applications …
Mount Padang archeological site has been known since late nineteen century as a megalithic complex that sits on top. Our studies proves that the structure does not cover just the …
Coupling the water and carbon cycles using transpiration and primary production data for improved global land-surface m…
Improving the accuracy of coupling of water and carbon cycles in land surface models has been emphasised in recent studies as a major priority for research. Reliable quantificatio…
Mid-Infrared Complex Refractive Indices for Motor Oils
The extent to which tropospheric aerosols impact the environment, particularly with regard to climate and human health, remains quite uncertain. Given their proximity to Earth's s…
Probing changes in frictional state due to normal stress perturbations using controlled-source ultrasonics
We perform a suite of laboratory friction experiments on saw-cut Westerly Granite surfaces and probe frictional state evolution in response to step changes in normal stress. The e…
GROUNDWATER FOOΤPRINT: A TOOL FOR ECOLOGICAL-BASED GROUNDWATER RESOURCES MANAGEMENT ASSESSMENT
Over-pumping and extended drought events have raised awareness on groundwater resources management within the Mediterranean Basin. As groundwater often has an important role in su…
Modulation of Mid-Atlantic Tropical Cyclone Landfalls by the MJO
In this study, we investigate the relationship between mid-Atlantic tropical cyclone (TC) landfalls and the Madden-Julian oscillation (MJO). This is done by using a high-atmoshper…
Functional Interpretation of the Evolution of Coccolith Morphology in Deep Time: Peering into the Biology of Coccolitho…
Despite much field and laboratory research, the origin of calcification in coccolithophores remains indeterminate. While most experiments on living species are not applicable to e…
Survival and Breeding Response of a Sea-ice Obligate Seabird Following the Unprecedented Low Extent of Winter Ice in th…
Sea ice extent in the Bering Sea during the winter of 2017–2018 was the lowest on record with ice cover attaining less than half the long-term average. Mandt’s Black Guillemot (Ce…
New Analytical 3D Magnetohydrostatic Equilibria for Modelling Solar Magnetic Fields
A new family of analytical magnetohydrostatic equilibria is presented. The methodology used to calculated these equilibria is based on work by Low (e.g. Low 1991) in the form give…
Expanding the GLOBE International STEM Network (GISN) to Include “Early Career STEM Professionals”
The Global Learning and Observations to Benefit the Environment (GLOBE) Program is an international science and education program that connects a network of communities around the…
Analysis of Factors Influencing Soil and Water Arsenic Concentration in Southwest Bangladesh
Soil samples (n = 45) and water samples (n = 111) were collected in the coastal zone of SW Bangladesh in wet (November) and dry (May) seasons in 2016 to identify the factors influ…
Solar eclipses at high latitudes: ionospheric effects in the lower ionosphere
The partial reflection facility of the Polar Geophysical Institute (the Tumanny observatory, 69.0N, 35.7E) has observed behavior of the high-latitude lower ionosphere during the 2…
Method Development for Remote Sensing of River Flow with Limited Ground-Based Measurements
Quantification of river flow is a significant component of water resource management needed to develop infrastructure, prepare for drought or flood, and ensure equitable resource …
Ambient Air Quality in a Low Density Territory of Continental Portugal
Ambient air quality (AQ) is an environmental and socio-economic issue increasingly decisive in the sustainable development of a territory. At low density territories of Continenta…
Hydro Climate Tools Developed by UNESCO’s International Hydrological Programme and its “Water Family” to Address Water-…
Hydro climate services, such as early warning systems and monitoring and forecasting services for floods and droughts, are required to deal with climate risk management and adapta…
Range estimates of whale signals recorded by triplets of hydrophones
The International Monitoring System (IMS) of the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) includes a hydro-acoustic network as one of the monitoring technologies…
Lidar profiles of Arctic plankton layers and their dependence on sea ice conditions
Airborne lidar surveys were used to characterize subsurface layers of phytoplankton in the Arctic Ocean during the latter half of July 2014 and again during the latter half of Jul…
OPEnS Hub: Real-time Data Logging, Connecting Field Sensors to Google Sheets
In earth science, we must often move and store tremendous amounts of data from remote locations. Present options are typically limited to costly proprietary devices which are rigi…
Weak Velocity Weakening of Augite with Concomitant Intergranular Pressure Solution under Hydrothermal Conditions
To fully understand the constitutive parameters and the associated mechanism in the velocity-weakening behavior of pyroxene observed in a previous study (He et al., 2013), we empl…
Tools and Resources for Educators: Teaching Quantitative Thinking in Geoscience with MATLAB
Computational geoscience courses often combine domain science, math, programming, and hardware instrumentation. Ensuring students master all those skills can be daunting for profe…
Cancer research encourages explorations of hypoxic conditions as a necessity for multicellularity and how animals solve…
Large life, as currently present on Earth, diversified during a late and seemingly non-trivial historic event. Although other biological revolutions – such as the advent of photos…
Predicting Potential Aeolian Sand Supply to a High and Steep Foredune
Foredune growth results predominantly from sand that is blown from the beach and backshore. Predictions of multi-year potential sand supply that are based on time series of wind s…
Transfer Learning for Seismic Phase Picking on Different Geographic Regions
Machine learning algorithms have become a powerful tool in different areas of seismology, such as phase picking/earthquake detection, earthquake early warning and focal mechanism …
GLASS, a Tool for Quality-Controlled GNSS Data and Products Dissemination.
Europe is covered by various networks of GNSS stations maintained by different agencies with different technical and scientific objectives. The EPOS-IP (European Plate Observing S…
Audio-Narrative Production As a Tool for Enhancing Students' Ability to Contextualize and Address Sustainability-Relate…
College students in STEM fields generally receive rigorous training in problem-solving, but often that training focuses primarily on the technical aspects of problems, ignoring or…
Evaluating solar PV effects on California's hydropower generation with a hybrid LP-NLP optimization model
A hybrid Linear Programming (LP) and Nonlinear Programming (NLP) optimization model is developed for California’s hydropower operations. Built on top of Pyomo library, a high opti…
Refining the drinking water resilience gap: When is today’s resilience rigidity tomorrow?
There is much discussion in the literature about the need to balance abilities to respond to short-term and long-term risks among water systems. Yet our understanding of what cont…
Five Years Of Recording VLF Intensities In Inner Plasmasphere Using C/NOFS VEFI
The Vector Electric Field Instrument (VEFI) aboard the CNOFS satellite recorded over 20 thousand 12-s-duration, 3-axis continuous VLF waveforms syncronously on 3 crossed antenna b…
MEASUREMENT OF THE VOLCANIC EXPLOSIVITY INDEX (VEI) IN REAL TIME
Ash-producing volcanic eruptions are a major natural hazard and the magnitude of the explosivity of these eruptions have been indicated for decades by a semi-quantitative “Volcani…
Evapotranspiration partitioning based on d-excess and its in situ application in tallgrass prairie
The use of stable isotopic tracer methods is becoming a popular approach for in situ evapotranspiration (ET) partitioning studies at the ecosystem scale. Ecosystem evapotranspirat…
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