Potential of Unmanned Aerial Vehicle (UAV) remote sensing in Karstic Springs: Muğla Turkey

Sağır, Çağdaş
Erdem, Günseli
Kurtuluş, Bedri
Avşar, Özgür
Kurtuluş, Dilek Funda
Tunca, Evren
Le Coz, Mathieu
Razack, Moumtaz
While today’s technology is rapidly evolving, some scientists are trying to take advantage of it in geosciences. Perhaps the unmanned vehicles, especially drones are one of the most remarkable products of this emerging technology. It might be said that one of the mistakes that can be made in science is not to catch up with the developing technology, not to make use of its benefits. The main purpose of this study is to speed up and facilitate data collection in hydrology by adapting a new technology such as UAV. The use of this kind of new technologies in such scientific fields will lead to detailed and precise data collection, especially on small scale. Thus, visible-multispectral-thermal cameras mounted drones are used to collect data on a river, karst springs and vegetation. This study is a part of an ERANETMED project titled as GRECPIMA (Groundwater Resilience to Climate Change and High Pressure within an IWRM Approach, funded by TUBITAK, No: 115Y843). In this view, the data obtained in this work will be used in the modeling of water resources within the scope of the project. It is also aimed to perform in-situ measurements to determine the reliability and the accuracy of data collected by the drones. The study area is situated in Akyaka, Ula, Muğla (SW Turkey). Large karst system in the area covers approximately 524 km2. The intensive agricultural and urban activities in the recharge zones of karst springs make studying this karst system more important. A visible, a multispectral and a thermal camera mounted drones were used to monitor the study area and collect data over a short river which is recharged by numerous karst springs. The 3-dimensional surface elevation model of the area was created with a visible camera mounted drone. A multispectral camera mounted drone made a flight over the vegetation and recorded NDVI images as well as NIR and red band images. A thermal camera mounted drone was flown over the springs and the spatial thermal images were taken. A handheld thermal camera was also used to record thermal images of the river at several points. So that the instantaneous thermal interaction of the springs with the river was also revealed. On the other hand, in-situ measurements are continuously performed to check the data collected by the drone. Since this is an ongoing study, no definitive conclusions have yet been reached, apart from the initial data. More importantly, it has been demonstrated that drones can provide practicality and benefits in earth science. Also, the modularity of these new technology products opens the way to use them in different scientific fields by making them more functional
Citation Formats
Ç. Sağır et al., “Potential of Unmanned Aerial Vehicle (UAV) remote sensing in Karstic Springs: Muğla Turkey,” presented at the IGWC 2017 7th International Groundwater Conference, (11-13 Aralık 2017), Yeni Delhi, Hindistan, 2017, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/73357.