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Showing 8651 to 8700 of 22070 works
Investigating the turbulent dynamics of small-scale surface fires
High frequency (30 Hz) two-dimensional particle image velocimetry (PIV) data recorded during a field experiment exploring fire spread from point ignition in hand-spread pine needl…
Global Atmospheric OCS Trend Analysis from 22 NDACC Stations
Carbonyl sulfide (OCS) is a non-hygroscopic trace species in the free troposphere and the primary sulfur reservoir maintained by direct oceanic, geologic, biogenic and anthropogen…
Satellite in-situ electron density observations of the storm enhanced density and the polar Tongue of Ionization on the…
Satellite in-situ electron density observations of the storm enhanced density 2 and the polar Tongue of Ionization on the noon meridional plane in the F 3 region during the The …
Weighing TUZO and JASON individually
There exist two large (~1000 km) dome-like structures rising from the base of the mantle in global tomographic models that exhibit low seismic wave-speeds, known as “Large Low Vel…
Deep Learning for Simultaneous Inference of Hydraulic and Transport Properties
Identifying the heterogeneous conductivity field and reconstructing the contaminant release history are key aspects of subsurface remediation. Achieving these two goals with limit…
Dynamics of episodic magma injection and migration at Yellowstone caldera: revisiting the 2004-2009 episode of caldera …
The 2004-2009 caldera uplift is the largest instrumentally recorded episode of unrestat Yellowstone caldera. We use GPS and InSAR time series spanning 2004-2015, witha focus in th…
Particle Responses to Near-Bed Shear Stress in a Shallow, Wave- and Current-Driven Environment
Novel analysis of in-situ acoustic and optical data collected in a shallow, wave- and current-driven environment enabled determination of: (1) particle characteristics that were m…
Geochemistry of shales of the Middle Buanji Group in the Kimani area, Southwest Tanzania: Implication to provenance and…
Major and trace element proxies of the shale samples from the Middle Buanji Group of the Upper Paleoproterozoic (∼1.67 Ga) are reported in this paper to decipher the provenance an…
Revisiting Piezoelectric Sensor Calibration Methods Using Elastodynamic Body Waves
The application of absolutely calibrated piezoelectric (PZT) sensors is increasingly used to help interpret the information carried by radiated elastic waves of laboratory/in situ…
The Lifetimes of Plasma Structures at High Latitudes
We present an investigation of polar cap plasma structure lifetimes. We analyze both simulated data from ionospheric models (International Reference Ionosphere model and Mass Spec…
Shallow Slow Earthquake Episodes Near the Trench Axis Off Costa Rica
Slow earthquakes are mainly distributed in regions surrounding seismogenic zones along the plate boundaries of subduction zones. In the Central American subduction zone, large reg…
Constraining the date of a seasonally ice-free Arctic using a simple model
State-of-the-art climate models simulate a large spread in the projected decline of Arctic sea-ice area (SIA) over the 21st century. Here we diagnose causes of this intermodel spr…
Full-coverage mapping and spatiotemporal variations of ground-level ozone (O3) pollution from 2013 to 2020 across China
Ozone (O3) is an important trace and greenhouse gas in the atmosphere yet, and it threatens the ecological environment and human health at the ground level. Large-scale and long-t…
Ecohydrological Model for Grasslands Lacking Historical Measurements II: Confluence Simulations Based on Dynamic Channe…
Technology has greatly promoted ecohydrological model development, but runoff generation and confluence simulations have fallen behind in ecohydrological model development due to …
A Deep Learning Model for Improved Wind and Wave Forecasts
The paper presents a combined numerical - deep learning (DL) approach for improving wind and wave forecasting. First, a DL model is trained to improve wind velocity forecasts by u…
Flooding and Overflow Mitigation through a Model-free Deep Reinforcement Learning based on Koopman Emulators of Urban D…
Deep reinforcement learning has been used to establish real-time control of urban drainage system (UDS) for flooding mitigation in recent studies. However, only model-based reinfo…
Phytoplankton size classes of global oceans under different bathymetric depths
The three-component model is often used to invert the phytoplankton size class (PSC) concentration globally, especially in open oceans. Limited by the three-component model’s assu…
Single-step probabilistic inversion of 3D seismic data of a carbonate reservoir in Southwest Iran
We use a sampling-based Markov chain Monte Carlo method to invert seismic data directly to porosity and quantify its uncertainty distribution in a hard-rock carbonate reservoir in…
Trajectory Simulation and Prediction of COVID-19 via Compound Natural Factor (CNF) Model in EDBF Algorithm
Natural and non-natural factors have combined effects on the trajectory of COVID-19 pandemic, but it is difficult to make them separate. To address this problem, a two-stepped met…
Aquatic insect bioconstructions modify fine-sediment entrainment and mobility
The importance of animals within fluvial geomorphology (zoogeomorphology) is increasingly recognized. Caddisflies (Trichoptera) are a group of aquatic insects known for their bioc…
Planetary boundary layer height modulates aerosol - water vapour interactions during winter in the megacity of Delhi
The Indo-Gangetic Plain (IGP) is one of the dominant sources of air pollution worldwide. During winter, the variations in planetary boundary layer (PBL) height, driven by a strong…
Precipitation Efficiency and Climate Sensitivity (Invited Chapter for the AGU Geophysical Monograph Series “Clouds and …
Key Points: • The concept of precipitation efficiency is broad, and can be related to many proposed cloud feedback mechanisms • Microphysical precipitation efficiency of tropical …
Tropical free-tropospheric humidity differences and their effect on the clear-sky radiation budget in global strom-reso…
Reducing the model spread in free-tropospheric relative humidity (RH) and its response to warming is a crucial step towards reducing the uncertainty in clear-sky climate sensitivi…
A time-resolved paleomagnetic record of Main Group pallasites: Evidence for a Psyche-like parent body
Several paleomagnetic studies have been conducted on five main group pallasites: Brenham, Marjalahti, Springwater, Imilac and Esquel. These pallasites have distinct cooling histor…
An End-to-End Deep RNN based Network Structure to Precisely Regress the Height of Lettuce by Single Perspective Sparse …
Focusing on non-destructive and automated acquisition of plant phenotypic parameters,this extended abstract proposed an end-to-end deep RNN based network structure for single pers…
Automatic Counting Method of Soybean Seed Based on VGG-T
In order to count soybean seeds quickly and accurately, improve the speed of seed test and the level of soybean breeding , this dissertation developed a method of soybean seed cou…
A brief review of the recent Assam Earthquake
The recent Assam Earthquake has been previewed in the context of the recent seismicity pertaining to Kopili Fault of northeast India. Kopili fault of northeast India is known for …
Applying Spatial Causal Inference on Induced Seismicity
Saltwater disposal has been identified as the dominant causal factor that contribute to induced seismicity. Physical models rely on mechanistic understanding to infer causality wh…
Investigation of Water Evaporation and Salt Precipitation at CO2 Geological Storage Condition
CO2 geological storage is a promising method to dispose excess CO2 in the atmosphere, and the existence of brine in deep saline aquifer and below oil reservoir may lead to salt pr…
Immunity to slope failures from distribution of slope failures induced by the 1945 Makurazaki typhoon and the 2018 heav…
The immunity to slope failure is the concept that once slope failure occurs, slope failure does not recur until the soil layer recovers. It is adequate to examine whether two slop…
Diurnal to Seasonal Dynamics of Groundwater, Evaporation, and Hydrology Fluctuations at the Bonneville Salt Flats Salin…
Saline pans are environments with evaporite crusts, high-salinity surface and groundwater brines, and low topographic gradients. These characteristics make them sensitive to diver…
Extracting hierarchical dynamical structure from a multistable geological system-the Himalayan paleomonsoon
The author presents an iterative approach to describing a data set, such as a paleoclimatic proxy or a model output, in terms of automata of successively higher order. The automat…
The Composition of ~96 keV W+ in Saturn’s Magnetosphere
The plumes of Enceladus produce a cloud of neutral H2O molecules and, via dissociation, OH and O. These neutrals are ionized by charge exchange, solar UV, and electron impacts, pr…
Ionospheric Dawnside Subauroral Polarization Streams: A Unique Feature of Major Geomagnetic Storms
Strong subauroral plasma flows were observed in the dawnside ionosphere during the 20 November 2003 super geomagnetic storm. They are identified as dawnside subauroral polarizatio…
New Measurements of Water Dynamics and Sediment Transport along the Middle Reach of the Congo River and the Kasai Tribu…
The Congo River provides potential for socio-economic growth at the regional scale, but with limited information on the river dynamics it is difficult for basin countries to benef…
Thermal and Magnetic Context of Central Brazil Structures: A study of magnetic lineaments in the central Trans-Brazilia…
This paper reports on the progresses obtained through the analysis of thermomagnetic features of the region between the southern part of Tocantins state and the northern part of G…
Will deep water formation collapse in the North Western Mediterranean Sea by the end of the 21st century?
Deep water formation (DWF) in the North Western Mediterranean (NWMed) is a key feature of Mediterranean overturning circulation. Changes in DWF under global warming may have an im…
Depth Dependent Focal Mechanisms of Volcanic Deep Low-Frequency Earthquakes in Northeast Japan
Deep low-frequency earthquakes (LFEs) in Northeast Japan occur beneath active volcanoes at depths of 20-40 km. LFEs radiate low-frequency seismic waves, with most energy at 2-8 Hz…
Complex physical mechanisms associated with Mesoscale Convective System over South-east India using collocated high-res…
Precise understanding of complex physical mechanisms of mesoscale process require high resolution observations of temperature, moisture, wind, precipitation, clouds. Using all col…
The impact of measurement scale on the univariate statistics of K, Th, and U in the Earth crust
The univariate statistics of Potassium (K), Thorium (Th) and Uranium (U) concentrations, in the Earth’s oceanic and continental crust are examined by different techniques. The fre…
The origin of early-mid Miocene pelagic brown and green claystone from IODP Site U1503A in the South China Sea: implica…
The marine pelagic brown claystone was widely recovered in the deep South China Sea (SCS) by International Ocean Discovery Program (IODP) Expedition 349, 367, 368 and 368X. The co…
On the Sources and Sizes of Error in Predicting the Arrival Time of Interplanetary Coronal Mass Ejections using Global …
Accurate predictions of the properties of interplanetary coronal mass ejection (ICME)-driven disturbances are a key objective for space weather forecasts. The ICME’s time of arriv…
Stratospheric Sulfate Aerosols impacts on West African monsoon precipitation using GeoMIP Models
Stratospheric Aerosol Geoengineering (SAG) is proposed to offset global warming; the use of this approach can impact the hydrological cycle. We use simulations from Coupled Model …
Improving path-planning for glider operations: A current-forecast based approach applied in the Gulf of St. Lawrence
Ocean gliders are a key platform that can fill the gaps between coastal and open ocean observing systems, between Argo floats, and moorings and ship-based strategies (Testor et al…
Conductivities of Titan's dusty ionosphere
Titan’s ionosphere hosts a globally distributed non-trivial dusty ion-ion plasma, providing an environment for studies of dusty ionospheres that is in many aspects unique in our s…
Equilibrium Climate Sensitivity and Transient Climate Response biased low in historical simulations of CMIP6 models
This study assesses the effective climate sensitivity (EffCS) and transient climate response (TCR) derived from global energy budget constraints within historical simulations of 8…
Time-magnitude correlations and the time variation of the Gutenberg-Richter parameter in foreshock sequences
The time dependence of the parameter of the Gutenberg-Richter (GR) magnitude distributions is computed for correlated foreshock sequences of earthquakes, by using the geometric-gr…
Crustal Groundwater Volumes Greater than Previously Thought
Global groundwater volumes in the upper 2 km of the Earth’s continental crust – critical for water security – are well estimated. Beyond these depths, a vast body of largely salin…
A Framework for Automated Detection of Ground-Motion Signals on Seismic and Infrasound Arrays using Computer Vision, Ma…
The recent deployment of nodal seismic instruments and DAS sensor networks has opened up a new chapter in observational seismology. Besides earthquake-generated signals, these new…
Replenishment of near-surface water ice by impacts into Ceres’ volatile-rich crust: Observations by Dawn’s Gamma Ray an…
Ceres’ regolith contains water ice that has receded in response to insolation-driven sublimation. Specially targeted, high spatial-resolution measurements of hydrogen by Dawn’s Ga…
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