Results 1 to 10 of about 2,498 (110)

Unmanned aerial survey of elephants. [PDF]

PLoS ONE, 2013
The use of a UAS (Unmanned Aircraft System) was tested to survey large mammals in the Nazinga Game Ranch in the south of Burkina Faso. The Gatewing ×100™ equipped with a Ricoh GR III camera was used to test animal reaction as the UAS passed, and ...
Cédric Vermeulen, Philippe Lejeune, Jonathan Lisein, Prosper Sawadogo, Philippe Bouché   +4 more
doaj   +5 more sources

Concealed anatomy and new geological features beneath desert areas of NW India – Constrained from high resolution aero-geophysical data

Journal of Asian Earth Sciences: X, 2022
The vast swathe of area in the Trans-Aravalli region between the western part of the South Delhi Fold Belt and eastern part of the Barmer basin, north-western India exhibits limited geological information due to thick sand cover of the Thar Desert.
Debojit Talukdar, Ashish Kumar Raul, Ch Ravi Kumar, Antony Selinraj, Niroj Kumar Sarkar, Bijay Kumar Sahu, Manoranjan Mohanty, K.V. Maruthi   +7 more
doaj   +1 more source

Autonomous Cave Surveying With an Aerial Robot [PDF]

IEEE Transactions on Robotics, 2022
This paper presents a method for cave surveying in total darkness using an autonomous aerial vehicle equipped with a depth camera for mapping, downward-facing camera for state estimation, and forward and downward lights. Traditional methods of cave surveying are labor-intensive and dangerous due to the risk of hypothermia when collecting data over ...
Wennie Tabib, Kshitij Goel, John W. Yao, Curtis Boirum, Nathan Michael   +4 more
openaire   +2 more sources

Distribution, sources and toxicity of heavy metals in surface sediments of north western Karnataka, south India

Scientific Reports, 2022
This study presents spatial distribution, sources and toxicological risks of As, Cr, Cu, Hg, Ni, Pb, and Zn in the surface sediments from north-western Karnataka, southern India.
Ishfaq Ahmad Mir, M. SreePrabash, V. Sridhar, K. V. Maruthi   +3 more
doaj   +1 more source

The Potential of Satellite Imagery for Surveying Whales

Sensors, 2021
The emergence of very high-resolution (VHR) satellite imagery (less than 1 m spatial resolution) is creating new opportunities within the fields of ecology and conservation biology.
Caroline Höschle, Hannah C. Cubaynes, Penny J. Clarke, Grant Humphries, Alex Borowicz   +4 more
doaj   +1 more source

Lithology-Based 3D Modeling of Urban Geological Attributes and Their Engineering Application: A Case Study of Guang’an City, SW China

Frontiers in Earth Science, 2022
Urban geological modeling (UGM) is a fundamental approach for the visualization of underground space and recognition of complex geological conditions of a city.
Fang Zhou, Minghui Li, Congjun Huang, Hong Liang, Yujie Liu, Jianlong Zhang, Baodi Wang, Ming Hao   +7 more
doaj   +1 more source

Aerial surveys of waterbirds in Australia [PDF]

Scientific Data, 2020
AbstractTracking long-term environmental change is important, particularly for freshwater ecosystems, often with high rates of decline. Waterbirds are key indicators of freshwater ecosystem change, with groups reflecting food availability (e.g. piscivores and fish).
Kingsford, RT, Porter, JL, Brandis, KJ, Ryall, S   +3 more
openaire   +3 more sources

Application of hyperspectral remote sensing for supplementary investigation of polymetallic deposits in Huaniushan ore region, northwestern China

Scientific Reports, 2021
A gold–silver–lead–zinc polymetallic ore was selected in Huaniushan, Gansu Province as the study area. Hyperspectral aerial images as the primary information source, ground spectrum tests, and sampling analysis were used as auxiliary techniques.
Yu-qing Wan, Yu-hai Fan, Mou-shun Jin
doaj   +1 more source

Roman frontier crossing Mocanului Valley [PDF]

Cercetări Arheologice, 2022
Several years ago, within Limes Transalutanus Project (2014-2017), we dealt with several segments of the Roman limes in Teleorman County. Briefly, that meant aerial and terrestrial survey, geologic sampling and geophysics, in most of the cases.
Eugen S. Teodor, Constantin Haită, Dan Ştefan   +2 more
doaj   +1 more source

Northeastern coast of Lake Baikal as a habitat of baikal seal Pusa sibirica in the summer period

Известия ТИНРО, 2023
Filling of the rookeries of baikal seal Pusa sibirica on the northeastern coast of Lake Baikal is surveyed instrumentally for the first time within the boundaries of protected area.
E. A. Petrov, A. B. Kupchinsky, M. E. Ovdin   +2 more
doaj   +1 more source