Abstract
We investigated changes in spectral reflectance associated with manipulations of algal densities and both bright and dark “bottoms”; at various depths in a 9500 L pool. Spectroradiometer data were collected at close range under natural sunlight. We found orderly patterns of either increasing or decreasing volume reflectance dependent on algal density, bottom color, and bottom depth. The color of the submerged bottom affected reflectance signals, especially the magnitude of the difference between the points of peak near‐infrared reflectance and chlorophyll‐dependent red absorption. Wavelength shifts in reflectance parks were detected as algal chlorophyll was reduced from 336 to 32 mg/m3. The wavelength of peak green reflectance increased from 552 to 567 nm and the near‐infrared peak from 695 to 717 nm.
| Original language | English |
|---|---|
| Pages (from-to) | 5-14 |
| Number of pages | 10 |
| Journal | Geocarto International |
| Volume | 10 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1995 |
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All Science Journal Classification (ASJC) codes
- Water Science and Technology
- Geography, Planning and Development
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The response of volume reflectance to manipulated algal concentrations above bright and dark bottoms at various depths in an experimental pool. / Rundquist, Donald C.; Schalles, John; Peake, Jeffrey S.
In: Geocarto International, Vol. 10, No. 4, 1995, p. 5-14.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The response of volume reflectance to manipulated algal concentrations above bright and dark bottoms at various depths in an experimental pool
AU - Rundquist, Donald C.
AU - Schalles, John
AU - Peake, Jeffrey S.
PY - 1995
Y1 - 1995
N2 - We investigated changes in spectral reflectance associated with manipulations of algal densities and both bright and dark “bottoms”; at various depths in a 9500 L pool. Spectroradiometer data were collected at close range under natural sunlight. We found orderly patterns of either increasing or decreasing volume reflectance dependent on algal density, bottom color, and bottom depth. The color of the submerged bottom affected reflectance signals, especially the magnitude of the difference between the points of peak near‐infrared reflectance and chlorophyll‐dependent red absorption. Wavelength shifts in reflectance parks were detected as algal chlorophyll was reduced from 336 to 32 mg/m3. The wavelength of peak green reflectance increased from 552 to 567 nm and the near‐infrared peak from 695 to 717 nm.
AB - We investigated changes in spectral reflectance associated with manipulations of algal densities and both bright and dark “bottoms”; at various depths in a 9500 L pool. Spectroradiometer data were collected at close range under natural sunlight. We found orderly patterns of either increasing or decreasing volume reflectance dependent on algal density, bottom color, and bottom depth. The color of the submerged bottom affected reflectance signals, especially the magnitude of the difference between the points of peak near‐infrared reflectance and chlorophyll‐dependent red absorption. Wavelength shifts in reflectance parks were detected as algal chlorophyll was reduced from 336 to 32 mg/m3. The wavelength of peak green reflectance increased from 552 to 567 nm and the near‐infrared peak from 695 to 717 nm.
UR - http://www.scopus.com/inward/record.url?scp=0029544961&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029544961&partnerID=8YFLogxK
U2 - 10.1080/10106049509354508
DO - 10.1080/10106049509354508
M3 - Article
AN - SCOPUS:0029544961
VL - 10
SP - 5
EP - 14
JO - Geocarto International
JF - Geocarto International
SN - 1010-6049
IS - 4
ER -