A5068797853- Oceanographic and Atmospheric Processes
- Marine and coastal ecosystems
- Terahertz technology and applications
- Climate variability and models
- Ocean Waves and Remote Sensing
- Advanced Chemical Sensor Technologies
- Seismic Performance and Analysis
- Risk and Safety Analysis
- Advanced Measurement and Detection Methods
- Non-Destructive Testing Techniques
- Spectroscopy and Laser Applications
- Structural Health Monitoring Techniques
- Infrared Target Detection Methodologies
- Graphite, nuclear technology, radiation studies
- Seismic Waves and Analysis
- Geophysical Methods and Applications
- Atmospheric and Environmental Gas Dynamics
- Arctic and Antarctic ice dynamics
- Meteorological Phenomena and Simulations
- Tropical and Extratropical Cyclones Research
- Gas Sensing Nanomaterials and Sensors
- Plasmonic and Surface Plasmon Research
- Thermal and Kinetic Analysis
- Gold and Silver Nanoparticles Synthesis and Applications
- Geology and Paleoclimatology Research
China Earthquake Administration
2022-2024
University of North Carolina at Chapel Hill
2019-2023
University of Georgia
2022
Skidaway Institute of Oceanography
2022
Woods Hole Oceanographic Institution
2022
North Carolina State University
2022
University of Delaware
2017-2018
China Jiliang University
2014-2015
TH Bingen University of Applied Sciences
1994
There has been wide interest in marine heatwaves and their ecological consequences recent years. Most analyses have focused on remotely sensed sea surface temperature data due to the temporal spatial coverage it provides order establish presence duration of heatwaves. Using hydrographic from a variety sources, we show that an advective Marine Heatwave was initiated by extreme shelfbreak exchange event late December 2016 south New England, with anomalies measuring up 6°C salinity exceeding 1...
The Processes driving Exchange At Cape Hatteras (PEACH) program seeks to better understand seawater exchanges between the continental shelf and open ocean near Hatteras, North Carolina. This location is where Gulf Stream transitions from a boundary-trapped current free jet, robust along-shelf convergence brings cool, relatively fresh Middle Atlantic Bight warm, salty South waters together, forming an important dynamic biogeographic boundary. magnitude of this implies large export water here....
We examine several characteristics of the Western Pacific Warm Pool (WP) in past thirty years mixed interannual variability and climate change. Our study presents three-dimensional WP centroid (WPC) movement, heat content anomaly (HC) volume (WPV) on to decadal time scales. show statistically significant correlation between each parameter's NINO 3, 3.4, 4, SOI, PDO indices. The longitudinal component WPC is most strongly correlated with 4 (R = 0.78). depth has highest -0.6) NINO3.4. WPV...
Abstract Carbon-rich Middle Atlantic Bight (MAB) and South (SAB) shelf waters typically converge on the continental near Cape Hatteras. Both are often exported to adjacent open ocean in this region. During a survey of region mid-January 2018, there was no sign water export at surface. Instead, subsurface layer with high chlorophyll dissolved oxygen observed edge Gulf Stream east Strong cooling over MAB SAB shelves early January led being denser than offshore surface waters. Driven by density...
Abstract The convergence of different water masses on the shelf and along shelfbreak, cross‐isobath shelf‐open ocean exchanges contribute to complex circulation near Cape Hatteras. We examine mean variability these circulations using data from nine bottom‐mounted acoustic Doppler current profilers, deployed over mid‐ outer‐continental north south Hatteras as part Processes driving Exchange At program. 18‐month‐mean depth‐averaged flows are mostly aligned with isobaths oriented toward two...
The Hatteras coastal ocean is centrally located along the east coast of 48 contiguous United States, offshore Cape in a complex land/ocean/atmosphere region where major currents differing temperatures and salinities meet interact, atmosphere fluctuates on wide range time scales, atmosphere-ocean interactions vary both spatially temporally. Gulf Stream current typically leaves its contact with continental margin here. Continental shelf from north south converge here, resulting net...
The Agulhas Region gains more heat during the global surface warming slowdown than acceleration period. Yet, mechanisms that cause excessive accumulation in this region remain largely unknown. We investigate underlying physical processes and examine their influence on ocean changes last three decades. Heave is found to drive increasing content decades whereas elevated rate compared period mainly attributed spice. During period, pure heaving of Subtropical Mode Water induced by wind stress...
Abstract Pulse‐like ground motion can cause extreme damage to long‐period structures. An automatic algorithm is proposed identify pulse‐like motions, in which improved anomaly detection applied and the structural performance considered. To characterize intrinsic features, distance‐based improved, relative cumulative energy added Manhattan distance. The first application of performs well identification. motions are identified according typical engineering structures Hazus by capacity spectrum...
Abstract The 1994 Northridge Earthquake is selected as an example to discuss the ability of three pulse-like ground motion identification methods. Wavelet analysis, peak-point method (PPM) and zero velocity point (ZVPM) are used. Pulse indictor ( PI ) calculated identify motions from 314 near-fault records. Peak (PGV) pulse period T p these methods compared. Most periods PPM smaller than those other two And, most stations with located on hanging wall. effect response spectra investigated...
The spectral characteristics of benzoyl peroxide in the range 0.3 to 1.6 THz region is obtained by time-domain spectroscopy, refraction and absorption spectra got,meanwhile. experimental result shows that, has peak at wave band 0.36621THz,0.498THz,0.92285THz,1.11328THz, most obvious which 0.92285THz.The terahertz mixture flour studied same time.This study provides a new method detect illegally added food.
Near-fault ground motion records often capture instances of pulse-like behavior, where a burst energy is expressed as large wave amplitude that occur over short time. The can cause serious damage to long-period structures. Using numerical simulations near-fault motions, we analyze the mechanisms involved in generation velocity pulses 1994 Northridge Earthquake and 1979 Imperial Valley Earthquake. degree which asperities affect pulse process investigated by identifying individual from...
A material on-line identification system based on THz time-domain spectroscopy using VC was developed in this paper. The main functions including data reading, linear motor driving, the calculation of optical parameters, display and management curve, interface, analysis historical , maintenance updating database, principal component were realized. As prototype detection application, whose corresponding type characteristic spectrum has already existed database could be well identified.
The quantitative regression analysis of the mixture based on terahertz spectrum is reported in this paper. absorption and refractive index a benzoyl peroxide polyethylene were obtained by calculation, then was used experimentally, preprocessed using method wavelet filter, first derivative model second model. Partial least squares kernel partial applied to modelling original spectrum, spectra, detailed performance evaluation presented at end
Because a uniform fragments field is needed for forward-firing warhead intercepting air targets, it necessary to analyze quantitatively and improve dispersion uniformity. The wave controller added in the make at marginal zone close center. static explosion experiments are performed obtain data before after being improved. results of analysis indicate that will center adding suitable warhead. And same time density centre changes little. radial uniformity much better than before. effective...
In this letter, a plasmonic dark field microscopy taking advantages of the polymer loaded surface plasmon polariton waveguide (PLSPPW) is experimentally demonstrated. The dye molecules (Rhodamine 6G, Rh6G) are doped in PLSPPW to launch waves or guided waves. Due localized property these waves, near-field optical energy on can be scattered into far-field only presence objects. scattering signals then form dark-field image proposed technique just utilizes chip-scale integrated multilayered...
Between April 2017 and November 2018 four medium-range WERA high-frequency radar (HFR) were deployed along the North Carolina coast, augmenting an existing array of long-range CODAR HFRs, as part NSF-funded Processes driving Exchange At Cape Hatteras (PEACH) project. These installations together yielded estimates surface currents over continental shelf around well adjacent open ocean waters, including in Gulf Stream southern Slope Sea. We report on procedure used to form vector current...