A5062870315- Water Quality Monitoring Technologies
- Ocean Waves and Remote Sensing
- Analytical Chemistry and Sensors
- Coastal and Marine Dynamics
- Marine and coastal ecosystems
- Ocean Acidification Effects and Responses
- Tropical and Extratropical Cyclones Research
- Underwater Vehicles and Communication Systems
- Climate change and permafrost
- Marine and environmental studies
- Water Quality Monitoring and Analysis
- Photonic and Optical Devices
- Gas Sensing Nanomaterials and Sensors
- Marine Biology and Ecology Research
- Wave and Wind Energy Systems
- Geophysics and Gravity Measurements
- Advanced Fiber Optic Sensors
- Cryospheric studies and observations
- Winter Sports Injuries and Performance
- Semiconductor Lasers and Optical Devices
National Oceanography Centre
2012-2024
Microfluidic technology permits the miniaturization of chemical analytical methods that are traditionally undertaken using benchtop equipment in laboratory environment. When applied to environmental monitoring, these "lab-on-chip" systems could allow high-performance analysis be performed situ over distributed sensor networks with large numbers measurement nodes. Here we present first a new generation microfluidic sufficient performance and robustness for deployment natural waters. The...
Here, we present a new in situ microfluidic phosphate sensor that features an improved "phosphate blue" assay which includes polyvinylpyrrolidone place of traditional surfactants—improving sensitivity and reducing temperature effects. The greater power economy analytical performance relative to commercially available alternatives, with mean consumption 1.8 W, detection limit 40 nM, dynamic range 0.14–10 μM, infield accuracy 4 ± 4.5%. During field testing, the was continuously deployed for 9...
Microfluidic reagent-based nutrient sensors offer a promising technology to address the global undersampling of ocean chemistry but have so far not been shown operate in deep sea (>200 m). We report new family miniaturized lab-on-chip (LOC) colorimetric analyzers making situ nitrate and phosphate measurements from surface (>4800 This gives users low-cost, high-performance tool for measuring hyperbaric environments. Using combination laboratory verification field-based tests, we demonstrate...
We report a new, autonomous Lab-on-Chip (LOC) microfluidic pH sensor with 6000 m depth capability, ten times the capability of state art spectrophotometric sensor. The is determined spectrophotometrically using purified meta-Cresol Purple indicator dye offering high precision (<0.001 unit measurement reproducibility), frequency (every 8 min) measurements on total proton scale from surface to deep ocean (to 600 bar). requires low power (3 W during continuous operation or ∼1300 J per...
We introduce for the first time a new product line able to make high accuracy measurements of number water chemistry parameters in situ : i.e., submerged environment including deep sea (to 6,000 m). This is based on developments lab chip technology at National Oceanography Centre (NOC), and University Southampton produced under license by Clearwater Sensors Ltd., start-up industrial partner bringing this global availability further developing its potential. The has already been deployed NOC,...
It is 4 years since the subglacial lake community published its plans for accessing, sampling, measuring and studying pristine, hitherto enigmatic very different, Antarctic lakes, Vostok, Whillans Ellsworth. This paper summarizes contrasting probe technologies designed each of these environments briefly updates how designs changed or were used differently when compared to previously plans. A detailed update on final engineering design technical aspects Subglacial Lake Ellsworth presented....
Abstract Wave overtopping of sea defences poses a hazard to people and infrastructure. Rising levels limited resources mean accurate prediction tools are needed deliver cost-effective shoreline management plans. A dearth in-situ data means that the numerical used for flood forecasting coastal scheme design based largely on from idealised flume studies, resulting predictions may have orders magnitude uncertainty complicated structures some environmental conditions. Furthermore, such studies...
It is projected that global mean sea level could rise up to 1 m this century with a strong regional pattern. estimated 20percent of England’s coastal defenses fail under just half rise. Ambitious climate mitigation and adaptation plans may protect 400,000 – 500,000 people, but flood erosion risks cannot be fully eliminated. Building resilience requires accurate wave overtopping prediction tools nowcast information prepare for respond hazards. In Dawlish, SW England, new monitoring system...
This paper describes the development of a state-of-the-art autonomous electronic system for high-resolution wave measurements in open ocean. The monitors capacitance partly-submerged PTFE-coated wires, which relates directly to height, and provides logging data at high rate. Characterization wires reliability testing electronics are provided performance entire is demonstrated during deployment.
We review our recent results on integration of lasers, detectors and microfluidic channels silicon germanium based mid-infrared photonic circuits, as well initial sensing experiments for medical gas applications. Wideband devices, such waveguides, couplers, splitters are required mid-IR absorption spectroscopy. show that Si Ge devices can operate over large spectral bands.
Abstract Wave overtopping of sea defences poses a hazard to people and infrastructure. Rising levels limited resources mean accurate prediction tools are needed deliver cost-effective shoreline management plans. A dearth in-situ data means that the numerical used for flood forecasting coastal scheme design based largely on from idealised flume studies, resulting predictions may have orders magnitude uncertainty. Furthermore, such studies usually only provide total volume water, no speed...