A towed magnetic gradiometer array for rapid, detailed imaging of utility, geological, and archaeological targets
<p>Efficient and accurate acquisition of magnetic field and gradient data have applications over a large range of environmental, archaeological, engineering, and geologic investigations. Developments in new systems and improvements in existing platforms have progressed to the point where magne...
Guardado en:
| Autores principales: | , , , |
|---|---|
| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
Copernicus Publications
2021
|
| Materias: | |
| Acceso en línea: | https://doaj.org/article/935f798fbcc445cfb1d6dcccaca00a27 |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| Sumario: | <p>Efficient and accurate acquisition of magnetic field and gradient
data have applications over a large range of environmental, archaeological,
engineering, and geologic investigations. Developments in new systems and
improvements in existing platforms have progressed to the point where
magnetic surveying is a heavily used and trusted technique. However, there
is still ample room to improve accuracy and coverage efficiency and to include
reliable vector information. We have developed a vector magnetic gradiometer
array capable of recording high-resolution field and gradient data over tens
of hectares per day at 50 cm sensor spacing. Towed by an all-terrain
vehicle, the system consists of eight vertical gradiometer sensor packages and
incorporates differential GPS and an inertial measurement system. With a
noise floor of around 6 nT at 15 km/h towing speed and 230 Hz sample rates,
large areas can be mapped efficiently and precisely. Data are processed
using a straightforward workflow, using both standard and newly developed
methodologies. The system described here has been used successfully in
Denmark to efficiently map buried structures and objects. We give two
examples from such applications highlighting the system's capabilities in
archaeological and geological applications.</p> |
|---|