TY  - JOUR
AU  - Urošev, Marko
AU  - Štrbac, Dragoljub
AU  - Kovačević-Majkić, Jelena
AU  - Plavšić, Jasna
AU  - Yamashkin, Stanislav
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2229
AB  - One of the indicators of water potential and water resources is specific runoff. Specific runoff for the whole territory of Serbia was obtained using the exponential relation between depth of runoff Y (mm) and precipitation P (mm). This relation is obtained on the basis of the mean annual amount of precipitation and annual water discharge, namely the depth of the runoff for 69 basins for the period 1961–2010. Coefficient of determination (R²) of relation between the depth of runoff and precipitation is 0.72. The differences between measured and modeled values of specific runoff vary from basin to basin, but at the level of the whole Serbia it is 3.5%. More precisely, the measured specific runoff amounts 5.6 l/s/km2, and the modeled specific runoff is 5.7 l/s/km2. The verification was done by applying the model to 11 large river basins in Serbia. Spatial distribution of the modeled specific runoff is presented by a digital map of specific runoff with pixel resolution 100 × 100 m which enables the estimation of mean annual water discharge in any ungauged basin in Serbia.
T2  - J. Geogr. Inst. Cvijic.
T1  - Spatial distribution of specific runoff in Serbia based on rainfall-runoff relationship
EP  - 214
SP  - 203
VL  - 70
DO  - 10.2298/IJGI2003203U
ER  - 

@article{
author = "Urošev, Marko and Štrbac, Dragoljub and Kovačević-Majkić, Jelena and Plavšić, Jasna and Yamashkin, Stanislav",
year = "2020",
abstract = "One of the indicators of water potential and water resources is specific runoff. Specific runoff for the whole territory of Serbia was obtained using the exponential relation between depth of runoff Y (mm) and precipitation P (mm). This relation is obtained on the basis of the mean annual amount of precipitation and annual water discharge, namely the depth of the runoff for 69 basins for the period 1961–2010. Coefficient of determination (R²) of relation between the depth of runoff and precipitation is 0.72. The differences between measured and modeled values of specific runoff vary from basin to basin, but at the level of the whole Serbia it is 3.5%. More precisely, the measured specific runoff amounts 5.6 l/s/km2, and the modeled specific runoff is 5.7 l/s/km2. The verification was done by applying the model to 11 large river basins in Serbia. Spatial distribution of the modeled specific runoff is presented by a digital map of specific runoff with pixel resolution 100 × 100 m which enables the estimation of mean annual water discharge in any ungauged basin in Serbia.",
journal = "J. Geogr. Inst. Cvijic.",
title = "Spatial distribution of specific runoff in Serbia based on rainfall-runoff relationship",
pages = "214-203",
volume = "70",
doi = "10.2298/IJGI2003203U"
}

Urošev, M., Štrbac, D., Kovačević-Majkić, J., Plavšić, J.,& Yamashkin, S.. (2020). Spatial distribution of specific runoff in Serbia based on rainfall-runoff relationship. in J. Geogr. Inst. Cvijic., 70, 203-214.
https://doi.org/10.2298/IJGI2003203U

Urošev M, Štrbac D, Kovačević-Majkić J, Plavšić J, Yamashkin S. Spatial distribution of specific runoff in Serbia based on rainfall-runoff relationship. in J. Geogr. Inst. Cvijic.. 2020;70:203-214.
doi:10.2298/IJGI2003203U .

Urošev, Marko, Štrbac, Dragoljub, Kovačević-Majkić, Jelena, Plavšić, Jasna, Yamashkin, Stanislav, "Spatial distribution of specific runoff in Serbia based on rainfall-runoff relationship" in J. Geogr. Inst. Cvijic., 70 (2020):203-214,
https://doi.org/10.2298/IJGI2003203U . .

TY  - JOUR
AU  - Nina, Aleksandra
AU  - Nico, Giovanni
AU  - Odalović, Oleg
AU  - Čadež, Vladimir M.
AU  - Todorović-Drakul, Miljana
AU  - Radovanović, Milan
AU  - Popović, Luka Č.
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1760
AB  - We investigate the influence of the perturbed (by a solar X-ray flare) ionospheric D-region on the GNSS and SAR signals. We calculate a signal delay in the D-region based on the low ionospheric monitoring by very low frequency (VLF) radio waves. Results show that the ionospheric delay in the perturbed D-region can be important and, therefore, should be taken into account in modeling the ionospheric influence on the GNSS and SAR signal propagation and in calculations relevant for space geodesy. This conclusion is significant because numerous existing models ignore the
impact of this ionospheric part on the GNSS and SAR signals due to its small electron density which is true only in quiet conditions and can result in significant errors in space geodesy during intensive ionospheric disturbances.
PB  - IEEE (Institute of Electrical and Electronics Engineers)
T2  - IEEE Geoscience and Remote Sensing Letters
T1  - GNSS and SAR Signal Delay in Perturbed Ionospheric D-Region During Solar X-Ray Flares
DO  - 10.1109/LGRS.2019.2941643
ER  - 

@article{
author = "Nina, Aleksandra and Nico, Giovanni and Odalović, Oleg and Čadež, Vladimir M. and Todorović-Drakul, Miljana and Radovanović, Milan and Popović, Luka Č.",
year = "2019",
abstract = "We investigate the influence of the perturbed (by a solar X-ray flare) ionospheric D-region on the GNSS and SAR signals. We calculate a signal delay in the D-region based on the low ionospheric monitoring by very low frequency (VLF) radio waves. Results show that the ionospheric delay in the perturbed D-region can be important and, therefore, should be taken into account in modeling the ionospheric influence on the GNSS and SAR signal propagation and in calculations relevant for space geodesy. This conclusion is significant because numerous existing models ignore the
impact of this ionospheric part on the GNSS and SAR signals due to its small electron density which is true only in quiet conditions and can result in significant errors in space geodesy during intensive ionospheric disturbances.",
publisher = "IEEE (Institute of Electrical and Electronics Engineers)",
journal = "IEEE Geoscience and Remote Sensing Letters",
title = "GNSS and SAR Signal Delay in Perturbed Ionospheric D-Region During Solar X-Ray Flares",
doi = "10.1109/LGRS.2019.2941643"
}

Nina, A., Nico, G., Odalović, O., Čadež, V. M., Todorović-Drakul, M., Radovanović, M.,& Popović, L. Č.. (2019). GNSS and SAR Signal Delay in Perturbed Ionospheric D-Region During Solar X-Ray Flares. in IEEE Geoscience and Remote Sensing Letters
IEEE (Institute of Electrical and Electronics Engineers)..
https://doi.org/10.1109/LGRS.2019.2941643

Nina A, Nico G, Odalović O, Čadež VM, Todorović-Drakul M, Radovanović M, Popović LČ. GNSS and SAR Signal Delay in Perturbed Ionospheric D-Region During Solar X-Ray Flares. in IEEE Geoscience and Remote Sensing Letters. 2019;.
doi:10.1109/LGRS.2019.2941643 .

Nina, Aleksandra, Nico, Giovanni, Odalović, Oleg, Čadež, Vladimir M., Todorović-Drakul, Miljana, Radovanović, Milan, Popović, Luka Č., "GNSS and SAR Signal Delay in Perturbed Ionospheric D-Region During Solar X-Ray Flares" in IEEE Geoscience and Remote Sensing Letters (2019),
https://doi.org/10.1109/LGRS.2019.2941643 . .