Analysis of laser fluorosensor systems for remote algae detection and quantification / Edward V. Brownell.

Browell, E. V.

doi:10.5962/bhl.title.4830

Cited by 14 publications

(6 citation statements)

References 7 publications

(15 reference statements)

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“…Zielinski et al: Sensors for pollutants, toxins, and pathogens of film thickness (Hengstermann and Reuter, 1990;Grüner et al, 1991;Zielinski, 2003;Zielinski et al, 2006a). In addition, the laser fluorosensor may be used for hydrographic measurements of chlorophyll or CDOM (Browell, 1977;Hoge and Swift, 1983;Zielinski et al, 2001).…”

Section: Marine Pollution (Mp)mentioning

confidence: 99%

Detecting marine hazardous substances and organisms: sensors for pollutants, toxins, and pathogens

et al. 2009

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Abstract. Marine environments are influenced by a wide diversity of anthropogenic and natural substances and organisms that may have adverse effects on human health and ecosystems. Real-time measurements of pollutants, toxins, and pathogens across a range of spatial scales are required to adequately monitor these hazards, manage the consequences, and to understand the processes governing their magnitude and distribution. Significant technological advancements have been made in recent years for the detection and analysis of such marine hazards. In particular, sensors deployed on a variety of mobile and fixed-point observing platforms provide a valuable means to assess hazards. In this review, we present state-of-the-art of sensor technology for the detection of harmful substances and organisms in the ocean. Sensors are classified by their adaptability to various platforms, addressing large, intermediate, or small areal scales. Current gaps and future demands are identified with an indication of the urgent need for new sensors to detect marine hazards at all scales in autonomous real-time mode. Progress in sensor technology is expected to depend on the development of small-scale sensor technologies with a high sensitivity and specificity towards target analytes or organisms. However, deployable systems must comply with platform requirements as these interconnect the three areal scales. Future developments will include the integration of existing methods into complex and operational sensing systems for a comprehensive strategy for long-term monitoring.Correspondence to: O. Zielinski (oliver.zielinski@imare.de)The combination of sensor techniques on all scales will remain crucial for the demand of large spatial and temporal coverage.

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Section: Marine Pollution (Mp)mentioning

confidence: 99%

Detecting marine hazardous substances and organisms: sensors for pollutants, toxins, and pathogens

et al. 2009

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“…In addition to this standard there are sophisticated sensors, such as the laser fluorosensor (LFS) or the microwave radiometer (MWR) that allow an advanced analysis of oil spills for the remote identification of oil species and the estimation 334 O. Zielinski et al: Sensors for pollutants, toxins, and pathogens of film thickness (Hengstermann and Reuter, 1990;Grüner et al, 1991;Zielinski, 2003;Zielinski et al, 2006a). In addition, the laser fluorosensor may be used for hydrographic measurements of chlorophyll or CDOM (Browell, 1977;Hoge and Swift, 1983;Zielinski et al, 2001).…”

Section: Marine Pollution (Mp)mentioning

confidence: 99%

Detecting marine hazardous substances and organisms: sensors for pollutants, toxins, and pathogens

Busch¹,

Cembella²,

Daly³

et al. 2009

Preprint

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Abstract. Marine environments are influenced by a wide diversity of anthropogenic and natural substances and organisms that may have adverse effects on human health and ecosystems. Real-time measurements of pollutants, toxins, and pathogens across a range of spatial scales are required to adequately monitor these hazards, manage the consequences, and to understand the processes governing their magnitude and distribution. Significant technological advancements have been made in recent years for the detection and analysis of such marine hazards. In particular, sensors deployed on a variety of mobile and fixed-point observing platforms provide a valuable means to assess hazards. In this review, we present state-of-the-art of sensor technology for the detection of harmful substances and organisms in the ocean. Sensors are classified by their adaptability to various platforms, addressing large, intermediate, or small areal scales. Current gaps and future demands are identified with an indication of the urgent need for new sensors to detect marine hazards at all scales in autonomous real-time mode. Progress in sensor technology is expected to depend on the development of small-scale sensor technologies with a high sensitivity and specificity towards target analytes or organisms. However, deployable systems must comply with platform requirements as these interconnect the three areal scales. Future developments will include the integration of existing methods into complex and operational sensing systems for a comprehensive strategy for long-term monitoring. The combination of sensor techniques on all scales will remain crucial for the demand of large spatial and temporal coverage.

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“…Assuming an optically homogeneous water column on the vertical, a signal S(A., z) from depth z, arriving at the receiving optic of an airborne laser fluorosensor, can be determined by using the following usual hydrographic lidar equation given by Browell (1977) and adapted by Diebel-Langohr (1986):…”

Section: Theory Of Depth-resolved Operationmentioning

confidence: 99%

Depth resolved detection of oceanographic variables in the St. Lawrence estuary using a laser fluorosensor: instrument characteristics and first results†

Nieke

Condal

Berthon

et al. 1995

International Journal of Remote Sensing

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A 64-channel Laser Environmental Airborne Fluorosensor (LEA F) system for sea surface oil detection was modified for continuous depth-resolved detection of gelbstolT and chlorophyll a spectral fluorescence, and water Raman scattering. The system was successfully tested during shipborne and airborne experiments in the SI. Lawrence Estuary. System performance was studied, and the best integration time to optimize the signal to noise ratio (SIN) was determined using dilTerent statistical procedures such as the geophysical and robust statistical methods. In general, raw data indicated SIN of about 150, 10, and 4 for Raman. gelbstolT and chlorophyll a signals, respectively. Results with calibrated LEAF spectra clearly indicated that, with this system, water Raman scattering, geibstolT and chlorophyll a signals could be detected down to a maximum depth of 4·8 m. Spatial distribution of these quantities compared well with simultaneously observed ill Silll structure of oceanographic variables, such as, underwater light attenuation, salinity and chlorophyll a fluorescence. In the perspective of modelling primary production in coastal and estuarine waters in the SI. Lawrence system (Case II waters), the utilization of LEAF should provide an adequate representation of the spatial and temporal variation pattern of oceanographic variables, at scales between those from ships and satellites.

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Analysis of laser fluorosensor systems for remote algae detection and quantification / Edward V. Brownell.

Abstract: Laser systems Remote sensing Algae detection Chlorophyll a measurement 19. Security Classif. (of this reportl Unclassified 18. Distribution Statement Unclassified Unlimited Subject Category 36 20. Security Classif.

Cited by 14 publications

References 7 publications

Detecting marine hazardous substances and organisms: sensors for pollutants, toxins, and pathogens

Detecting marine hazardous substances and organisms: sensors for pollutants, toxins, and pathogens

Detecting marine hazardous substances and organisms: sensors for pollutants, toxins, and pathogens

Depth resolved detection of oceanographic variables in the St. Lawrence estuary using a laser fluorosensor: instrument characteristics and first results†

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