Results 261 to 270 of about 26,343 (300)

Remote estimation of chlorophyll a in optically complex waters based on optical classification

Remote Sensing of Environment, 2011
Abstract Accurate assessment of phytoplankton chlorophyll a (Chla) concentration in turbid waters by means of remote sensing is challenging due to optically complexity and significant variability of case 2 waters, especially in inland waters with multiple optical types.
Chengfeng Le, Yunmei Li, Yong Zha, Deyong Sun, Changchun Huang, Hong Zhang   +5 more
openaire   +1 more source

Specific inherent optical quantities of complex turbid inland waters, from the perspective of water classification

Photochemical & Photobiological Sciences, 2012
For optically complex turbid productive waters, the optical behavior of suspended particles is the keynote of characterizing the unordered variations of inherent optical properties (IOPs). Multiple bio-optical measurements and sampling of optically active substances were performed in Lake Taihu, Lake Chaohu, and Lake Dianchi, and Three Gorges reservoir
Deyong, Sun, Yunmei, Li, Qiao, Wang, Chengfeng, Le, Heng, Lv, Changchun, Huang, Shaoqi, Gong   +6 more
openaire   +2 more sources

Modelling optical properties of organic–mineral complexes in water ecosystems

Journal of Physics D: Applied Physics, 2005
Characteristics of organic–mineral complexes have been theoretically and experimentally studied in the paper, based on the method of integral light scattering indicatrix. Modelling of optical properties was realized using models of the coated spherical particles with a shell which is constant and changeable in the refractive index profile.
V N Lopatin, N V Shepelevich, I V Prostakova   +2 more
openaire   +1 more source

Modeling satellite imaging sensors over optically complex bodies of water

SPIE Proceedings, 2013
Although several currently operating remote sensing satellites can take effective data from case-1 waters, which are dominated by phytoplankton, few instruments have the appropriate spatial and radiometric resolution for taking effective data from Case 2 waters, which contain significant levels of chlorophyll, suspended material, and color-dissolved ...
Robert Nevins, Aaron Gerace
openaire   +1 more source

Modeling spectral reflectance of optically complex waters using bio-optical measurements from Tokyo Bay

Remote Sensing of Environment, 2005
Abstract This study presents an approach for optimally parameterizing a reflectance model. A parameterization scheme is realized based on a comprehensive bio-optical data set, including subsurface downwelling and upwelling irradiance spectra, absorption spectra of particle and dissolved substances, as well as chlorophyll and total suspended matter ...
H FENG, J CAMPBELL, M DOWELL, T MOORE
openaire   +1 more source

Photochemical and Optical Properties of Water-Soluble Xanthophyll Antioxidants: Aggregation vs Complexation

The Journal of Physical Chemistry B, 2013
Xanthophyll carotenoids can self-assemble in aqueous solution to form J- and H-type aggregates. This feature significantly changes the photophysical and optical properties of these carotenoids, and has an impact on solar energy conversion and light induced oxidative damage.
Nikolay E, Polyakov, Adam, Magyar, Lowell D, Kispert   +2 more
openaire   +2 more sources

Infrared-Optical Double Resonance Spectroscopic Investigation of Trifluoromethylphenols and Their Water Complexes

The Journal of Physical Chemistry A, 2012
The hydrogen bonding behavior of trifluoromethylphenols and their water complexes were investigated using IR-UV double resonance spectroscopy. Both ortho- and meta-trifluoromethylphenols exist in the syn conformer, which is the global minimum in both the cases.
DEY, A, PATWARI, GN
openaire   +3 more sources

Mapping water quality and substrate cover in optically complex coastal and reef waters: an integrated approach

Marine Pollution Bulletin, 2005
Sustainable management of coastal and coral reef environments requires regular collection of accurate information on recognized ecosystem health indicators. Satellite image data and derived maps of water column and substrate biophysical properties provide an opportunity to develop baseline mapping and monitoring programs for coastal and coral reef ...
Phinn, S. R., Dekker, A. G., Brando, V. E., Roelfsema, C. M.   +3 more
openaire   +3 more sources

Optical limiting behaviour of the water-soluble C60/γ-cyclodextrin complex

Chemical Physics Letters, 2000
Abstract The third-order nonlinear optical response of the water-soluble inclusion complex consisting of C 60 incorporated in γ-cyclodextrin was examined employing the z -scan technique. Using 532 nm, 10 ns laser pulses, significant optical limiting action was observed, the effect being slightly lower than that of pure C 60 diluted in toluene ...
Konstantaki, M, Koudoumas, E., Couris, S., Janot, Jean-Marc, Eddaoudi, H, Deratani, A., Seta, S, Leach, S.   +7 more
openaire   +2 more sources

Airborne mapping of shallow water bathymetry in the optically complex waters of the Baltic Sea

Journal of Applied Remote Sensing, 2016
Accurate determination of the water depth is important for marine spatial planning, producing maritime charts for navigation, seabed morphology studies, and carrying out different activities in the coastal waters. Bathymetric data are lacking foremost in the shallow water regions as those areas are often inaccessible to the hydrographic ships carrying ...
Ele Vahtmäe, Tiit Kutser
openaire   +1 more source