Results 51 to 60 of about 7,805 (237)

Leveraging Big Multitemporal Multisource Satellite Data and Artificial Intelligence for the Detection of Complex and Invisible Features: The Case of Extensive Irrigation Mapping

Archaeological Prospection, EarlyView.
ABSTRACT The detection of buried or obscured archaeological features remains a central challenge in landscape archaeology, particularly in the irrigated floodplains of Mesopotamia where levees and canals formed the basis of complex agrarian systems. This study presents a deep learning–based approach for the large‐scale, automated detection of ancient ...
Nazarij Buławka, Hector A. Orengo, Felipe Lumbreras Ruiz, Iban Berganzo‐Besga, Ekta Gupta   +4 more
wiley   +1 more source

Understanding ‘saturation’ of radar signals over forests

Scientific Reports, 2017
There is an urgent need to quantify anthropogenic influence on forest carbon stocks. Using satellite-based radar imagery for such purposes has been challenged by the apparent loss of signal sensitivity to changes in forest aboveground volume (AGV) above ...
Neha Joshi, Edward T. A. Mitchard, Matthew Brolly, Johannes Schumacher, Alfredo Fernández-Landa, Vivian Kvist Johannsen, Miguel Marchamalo, Rasmus Fensholt   +7 more
doaj   +1 more source

On the collocation between dayside auroral activity and coherent HF radar backscatter [PDF]

Annales Geophysicae, 2000
The 2D morphology of coherent HF radar and optical cusp aurora has been studied for conditions of predominantly southward IMF conditions, which favours low-latitude boundary layer reconnection.
J. Moen, J. Moen, H. C. Carlson, S. E. Milan, N. Shumilov, B. Lybekk, P. E. Sandholt, M. Lester   +7 more
doaj   +1 more source

Design, Preparation, and Structural Control Mechanism of High Performance Water Splitting NiFeCu Catalyst under Magnetic Field

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
By utilizing magnetic field‐assisted electrodeposition to synthesize a Cu‐rich dendritic NiFeCu electrocatalyst, this study significantly improves the efficiency of water splitting. The research not only introduces an innovative strategy for designing highly active bifunctional catalysts but also pioneers a new direction for the application of magnetic
Zhong Wang, Siyuan Zhang, Xuemin Wang, Chuhan Wang, Weibin Chen, Guojian Li, Xiaoming Liu, Qiang Wang, Shuang Yuan   +8 more
wiley   +1 more source

On the relationship between the velocity of E-region HF echoes and E B plasma drift [PDF]

, 2005
International audienceIn this study, velocities of E-region HF echoes observed by the Stokkseyri HF radar are compared with ExB plasma drifts in the F-region measured by the DMSP satellites.
D. W. Danskin, Koustov, A. V., J. D. Gorin, Makarevitch, R. A., Gorin, J. D., A. V. Koustov, R. A. Makarevitch, Danskin, D. W.   +7 more
core   +1 more source

Sensitivity of Sentinel-1 Backscatter to Management-Related Disturbances in Temperate Forests

Remote Sensing
The rapid and accurate detection of forest disturbances in temperate forests has become increasingly crucial as policy demands and climate pressure on these forests rise.
Sietse van der Woude, Johannes Reiche, Frank Sterck, Gert-Jan Nabuurs, Marleen Vos, Martin Herold   +5 more
doaj   +1 more source

Transmission Raman Spectroscopy (TRS) for Accurate Authentication of API in Coated Hydroxychloroquine (HCQ) Tablets

Journal of Raman Spectroscopy, EarlyView.
We report the development and use of a transmission Raman spectroscopy (TRS) system for a more accurate but nonintrusive way of authentication of API in coated HCQ tablets which otherwise is not possible using the backscattered (BS) configuration of Raman spectroscopy. The coating interference is found to be almost zero in case of the TRS and a greater
Vijay Kumar, Khan Mohammad Khan, Hemant Krishna, Khageswar Sahu, Srinibas Satapathy, Shovan Kumar Majumder   +5 more
wiley   +1 more source

Assessing plant water status: Part 2 – Non‐destructive and remote sensing approaches

Journal of the Science of Food and Agriculture, EarlyView.
Abstract Precise, real time and non‐destructive assessment of plant water status is important for advancing plant physiological understanding, optimizing water usage, improving crop resilience and supporting precision agriculture in the face of increasingly variable climatic conditions.
Naila Farooq, Bo Zhang, Bastian Leander Franzisky, Tasawer Abbas, Jochen Taiber, Martin Koch, Ian C Dodd, Christoph‐Martin Geilfus   +7 more
wiley   +1 more source

A decade of the Super Dual Auroral Radar Network (SuperDARN): scientific achievements, new techniques and future directions [PDF]

, 2007
The Super Dual Auroral Radar Network (SuperDARN) has been operating as an international co-operative organisation for over 10 years. The network has now grown so that the fields of view of its 18 radars cover the majority of the northern and southern ...
M. P. Freeman, Sofko, G.J., P. L. Dyson, Ruohoniemi, J. M., Kikuchi, T., J. M. Ruohoniemi, Chisham, G., Walker, A.D.M., Dyson, P. L., R. A. Greenwald, G. J. Sofko, Milan, S.E., T. K. Yeoman, M. Pinnock, J.-P. Villain, Freeman, M. P., A. Grocott, Rash, J.P.S., Sato, N., Yeoman, T. K., Freeman, M.P., Bristow, W.A., Milan, S. E., K. A. McWilliams, N. Sato, Lester, M., Villain, J.-P., Greenwald, R.A., G. Chisham, Bristow, W. A., A. D. M. Walker, Grocott, A., Mcwilliams, K. A., M. Lester, Pinnock, M., Dyson, P.L., Walker, A. D. M., McWilliams, K.A., T. Kikuchi, S. E. Milan, Ruohoniemi, J.M., Greenwald, R. A., Sofko, G. J., J. P. S. Rash, Rash, J. P. S., W. A. Bristow, Yeoman, T.K.   +46 more
core   +1 more source

First observations of SPEAR-induced artificial backscatter from CUTLASS and the EISCAT Svalbard radars [PDF]

Annales Geophysicae, 2006
Results are presented from the first two active experimental campaigns undertaken by the new SPEAR (Space Plasma Exploration by Active Radar) high-power system that has recently become operational on Spitzbergen, in the Svalbard archipelago.
T. R. Robinson, T. K. Yeoman, R. S. Dhillon, M. Lester, E. C. Thomas, J. D. Thornhill, D. M. Wright, A. P. van Eyken, I. W. McCrea   +8 more
doaj   +1 more source