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• Oil spill monitoring
  * '''Passive systems''': Passive systems make use of sensors that detect the reflected or emitted electro-magnetic radiation from natura ...nt overpass, high spatial resolution and their day–night and all-weather sensors are essential for detecting large spills and monitoring ship and platform o
  12 KB (1,825 words) - 22:46, 9 February 2024
• Remote sensing
  ...ction depending on what they want to investigate. The data recorded by the sensors must be pre-processed (corrected, enhanced), analyzed (classified) and inte == Types of sensors==
  11 KB (1,586 words) - 18:47, 19 February 2024
• Optical remote sensing
  ...a can be processed and the restrictions with respect to the application of optical remote sensing. [[Remote sensing]] using satellite and airborne sensors is a powerful, operational tool for monitoring coastal zones. This technolo
  7 KB (935 words) - 13:12, 7 December 2023
• Argus video monitoring system
  ...thwest, the logistics, cost and data benefits soon drove the lab to an all-optical approach to nearshore sampling. This was boosted enormously by the early di ...n content of time exposure images has strongly supported the arguments for optical [[remote sensing]] as an important nearshore monitoring tool and has made t
  13 KB (1,959 words) - 15:21, 6 April 2021
• Use of Lidar for coastal habitat mapping
  *acquisition electronics and electro-optical components. ...2 nm) travels through the air-water interface to the bottom (Figure 4). An optical receiver on the aircraft detects the pulse reflections from both the seabed
  15 KB (2,393 words) - 22:55, 9 October 2023
• Manual Sediment Transport Measurements in Rivers, Estuaries and Coastal Seas
  ** 5.6.4: [[general principles of optical and acoustical instruments|Optical and acoustical sampling methods]]: *** [[Optical backscatter point sensor (OBS)]]
  5 KB (654 words) - 20:48, 19 August 2020
• Instrument characteristics of point-integrating suspended load samplers
  ...ther easily, especially in a silty environment. The sampling period of the optical and acoustical samplers is free. For time-averaging additional equipment sh ...on a relatively long sampling period (say 5 minutes). The accuracy of the optical and acoustical samplers is largely dependent on the number and accuracy of
  4 KB (599 words) - 16:38, 19 August 2020
• Measuring instruments for coasts
  ...acoustic samplers (see also [[pump samplers]] and [[general principles of optical and acoustical instruments]]). ...be used in conditions with both sand and silt particles in suspension. The optical instruments are relatively sensitive to fine mud particles. Hence, the mud
  12 KB (1,782 words) - 11:43, 7 September 2020
• Acoustic monitoring of marine mammals
  * [[General principles of optical and acoustical instruments]] * [[Acoustic backscatter profiling sensors (ABS)]]
  5 KB (788 words) - 11:38, 17 February 2024
• Measuring instruments for sediment transport
  ...e mechanical samplers to sophisticated optical and acoustical (electronic) sensors. Most instruments are used as point-integrating instruments which means the ...required using a pump sampler with the nozzle as close as possible to the optical/acoustic sensor.
  27 KB (3,920 words) - 22:17, 19 August 2020
• In situ measurement of wet bulk density
  ...measured [[in situ]] by mechanical, acoustic or nuclear radiation [[sensor|sensors]]. ...onic waves through the (fluid) mud layer. See also [[General principles of optical and acoustical instruments]].
  4 KB (584 words) - 14:46, 19 August 2020
• Instruments for bed level detection
  ...ts which can be used to produce bathymetric maps: mechanical, acoustic and optical instruments. ...S; acoustic bed level detectors (single and multi-beam echo sounders); and optical bed level detection.
  7 KB (1,105 words) - 13:16, 7 December 2023
• Measuring instruments for fluid velocity, pressure and wave height
  * electromagnetic velocity [[sensor|sensors]], * acoustic velocity [[sensor|sensors]] (point sensors and profilers),
  10 KB (1,442 words) - 20:14, 29 June 2019
• Nutrient analysers
  ...wo types of analyzers to measure nutrients: a wet chemical analyzer and an optical nitrate analyzer. A nutrient analyzer is an example of an [[oceanographic i Back to [[Instruments and sensors to measure environmental parameters]]
  8 KB (1,081 words) - 21:30, 16 January 2021
• Underwater video systems
  ...n seen in high-speed cameras. It should be said that the evolution of CMOS sensors is very fast, and that it probably soon will compete with the CCD. ...This cupola shaped optical window will, due to the refraction at the water/optical window/air interfaces, make it act as a diverging (negative) lens, that not
  18 KB (3,032 words) - 15:13, 22 August 2020
• Video technology
  ...changes can be read out from the camera tube as small current changes. The optical picture can thus (after amplification) be represented by a variation in vol Although modern cameras use solid-state image sensors (CCDs or CMOS), the signal emanating from them follows the standards that w
  14 KB (2,315 words) - 22:50, 29 June 2019
• Oxygen sensors
  Back to [[Instruments and sensors to measure environmental parameters]] ...two different types of sensors are described, the electrochemical and the optical type of oxygen sensor.
  15 KB (2,361 words) - 13:56, 20 August 2020
• Fluorescence sensors
  Fluorescence sensors can be used to study chlorophyll and to measure dissolved oxygen concentrat ...scence signal. Modern compact fluorometers use a wide range of proprietary optical configurations, including coaxial arrangements of the excitation and collec
  6 KB (823 words) - 17:52, 29 June 2019
• General principles of optical and acoustical instruments
  ...the calibration, measuring range and advantages of [[remote sensing]] with optical and acoustical instruments. ...chanical sampling methods. Although based on different physical phenomena, optical and acoustical sampling methods are very similar in a macroscopic sense. Fo
  9 KB (1,204 words) - 17:09, 26 October 2020
• Optical backscatter point sensor (OBS)
  ...elft Hydraulics Laboratory</ref>. This article gives an introduction of an optical backscatter (OBS) point [[sensor]], which can be used to measure [[turbidit [[Image:H5642figure1.jpg|thumb|250px|right|Figure 1: Optical backscatter point sensor (OBS)]]
  11 KB (1,594 words) - 11:42, 20 August 2020

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