Publikationsdatum:
2022-02-10
Beschreibung:
The airborne magnetic method was established a few decades ago, as a strong tool in mining and petroleum exploration. Several
economically relevant discoveries are often credited to aeromagnetism. Geological reconnaissance and mapping, deep crustal and
upper mantle studies, environmental characterization, and national and international security issues can greatly benefit from the
aeromagnetic method, as compared with other geophysical prospecting schemes. The rapid rate of coverage and the low cost per
unit area explored represent just a few among the many advantages of the technique. Consequently, large-scale airborne magnetic
surveys have been carried out in various parts of the globe. The amount of direct discoveries of ore bodies by means of
aeromagnetism is impressive. Large magnetic iron deposits found in the early 1960s are in Southern California, Missouri, Nevada,
Pennsylvania, Quebec, Ontario, and elsewhere.
In the field of petroleum exploration, the method has also been used, although with less direct application. Depth to magnetic
basement estimation in sedimentary basins narrows down areas of interest where to conduct exploration surveys in detail by means
of more costly methods.
The most relevant use of airborne magnetic results is crustal imaging and characterization. Nowadays, geology is interpreted in
three dimensions using a digital aeromagnetic map.
Beschreibung:
Published
Beschreibung:
675-688
Beschreibung:
1T. Struttura della Terra
Beschreibung:
4T. Sismicità dell'Italia
Beschreibung:
6T. Studi di pericolosità sismica e da maremoto
Beschreibung:
1V. Storia eruttiva
Beschreibung:
2V. Struttura e sistema di alimentazione dei vulcani
Beschreibung:
6V. Pericolosità vulcanica e contributi alla stima del rischio
Beschreibung:
1A. Geomagnetismo e Paleomagnetismo
Beschreibung:
3A. Geofisica marina e osservazioni multiparametriche a fondo mare
Beschreibung:
5A. Ricerche polari e paleoclima
Beschreibung:
7A. Geofisica per il monitoraggio ambientale
Beschreibung:
1TR. Georisorse
Beschreibung:
2TR. Ricostruzione e modellazione della struttura crostale
Beschreibung:
6SR VULCANI – Servizi e ricerca per la società
Beschreibung:
7SR AMBIENTE – Servizi e ricerca per la società
Schlagwort(e):
aeromagnetism
;
potential fields
;
magnetic anomaly
;
04.02. Exploration geophysics
;
04.05. Geomagnetism
;
04.07. Tectonophysics
;
04.08. Volcanology
;
04.06. Seismology
Repository-Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Materialart:
book chapter
Permalink