Bathymetry and Water Quality Measurement of Shallow Waters using Hyperion: Sercin Lake

2014-04-25
Ozdemir, Ayfer
Leloğlu, Uğur Murat
Hyperspectral images are very useful in estimating dense bathymetry of shallow waters cost-effectively. In this study, work on Lake Sercin using Hyperion images is summarized. Firstly, outlier pixels are determined by using median filtering on vertical profiles to handle the radiometric calibration problem that manifests itself as vertical stripes and their effect is removed. Remaining effect is suppressed using horizontal smoothing on the profile. Following the removal of radiometric and atmospheric effects, the depth and chlorophyll A arc estimated using visible bands.

Suggestions

Hyperion Görüntülerinden Sığ Sularda Derinlik ve Su Kalitesi Ölçümü : Serçin Gölü
Özdemir, Ayfer; Leloğlu, Uğur Murat (2014-04-25)
Hiperspektral görüntüler, sığ sularda batimetri tahminlerinde düşük maliyetli olduğu için avatajlı bir yöntemdir. Bu çalışmada, Serçin Gölü'nde Hyperion görüntüleri kullanılarak yapılan çalışmalar özetlenmiştir. Öncelikle, düşey şeritler şeklinde kendini gösteren radyometrik kalibrasyon sorununu çözmek için, düşey profiller üzerinde medyan filtre kullanılarak aykırı pikseller tespit edilmiş ve etkileri giderilmiştir. Profil üzerinde yatay yumuşatma filtreleri ile kalan etki bastırılmıştır. Radyometrik ve at...
Remotely Sensed Terrestrial Water Balance of the Nile Basin
Smith, Tiffany; Zaitchik, Ben; Anderson, Martha; Yılmaz, Mustafa Tuğrul; Alo, Clement; Rodell, Matthew (2011-12-05)
Satellite-derived estimates of precipitation, evapotranspiration (ET), and water storage have transformed our understanding of hydrological dynamics at the basin scale. At the same time, the profusion of satellite and model-generated hydrological estimates has demonstrated that there is still considerable uncertainty associated with the quantification of hydrologic states and fluxes at basin scale: the use of different combinations of data products can lead to dramatically different conclusions regarding wa...
Field measurements and modeling of groundwater flow and biogeochemistry at Moses Hammock, a backbarrier island on the Georgia coast
Porubsky, W. P.; Joye, S. B.; Moore, W. S.; Tuncay, Kağan; Meile, C. (Springer Science and Business Media LLC, 2011-07-01)
A combination of field measurements, laboratory experiments and model simulations were used to characterize the groundwater biogeochemical dynamics along a shallow monitoring well transect on a coastal hammock. A switch in the redox status of the dissolved inorganic nitrogen (DIN) pool in the well at the upland/saltmarsh interface occurred over the spring-neap tidal transition: the DIN pool was dominated by nitrate during spring tide and by ammonium during neap tide. A density-dependent reaction-transport m...
Accuracy assessment of MODIS daily snow albedo retrievals with in situ measurements in Karasu basin, Turkey
Tekeli, AE; Sensoy, A; Sorman, A; Akyürek, Sevda Zuhal; Sorman, U (Wiley, 2006-03-15)
Over the ablation period of 2004, daily snow albedo values retrieved from the moderate-resolution imaging spectroradiometer (MODIS) Terra were compared with ground-based albedo measurements. Two data sets are used for this study. The first data set is from two automatic weather stations (AWS) located at fixed points in Karasu basin in eastern Turkey. This provided the temporal assessment of MODIS daily snow albedo values. The second data set, consisting of 19 observation points randomly distributed around o...
Atmospheric mercury distribution in Northern Europe and in the Mediterranean region
Wängberg, Ingvar; et. al. (2001-06-01)
Mercury species in air have been measured at five sites in Northwest Europe and at five coastal sites in the Mediterranean region during measurements at four seasons. Observed concentrations of total gaseous mercury (TGM), total particulate mercury (TPM) and reactive gaseous mercury (RGM) were generally slightly higher in the Mediterranean region than in Northwest Europe. Incoming clean Atlantic air seems to be enriched in TGM in comparison to air in Scandinavia. Trajectory analysis of events where high con...
Citation Formats
A. Ozdemir and U. M. Leloğlu, “Bathymetry and Water Quality Measurement of Shallow Waters using Hyperion: Sercin Lake,” Trabzon, TURKEY, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/55457.