Airborne gravity tests in the Italian area to improve the geoid model of Italy
ABSTRACT Airborne gravimetry is an important method for measuring gravity over large unsurveyed areas. This technology has been widely applied in Canada, Antarctica and Greenland to map the gravity fields of these regions and in recent years, in the oil industry. In 2005, two tests in the Italian ar...
Published in: | Geophysical Prospecting |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2009
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/j.1365-2478.2008.00776.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2478.2008.00776.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2478.2008.00776.x |
id |
crwiley:10.1111/j.1365-2478.2008.00776.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/j.1365-2478.2008.00776.x 2024-06-02T07:58:28+00:00 Airborne gravity tests in the Italian area to improve the geoid model of Italy Barzaghi, R. Borghi, A. Keller, K. Forsberg, R. Giori, I. Loretti, I. Olesen, A.V. Stenseng, L. 2009 http://dx.doi.org/10.1111/j.1365-2478.2008.00776.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2478.2008.00776.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2478.2008.00776.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Geophysical Prospecting volume 57, issue 4, page 625-632 ISSN 0016-8025 1365-2478 journal-article 2009 crwiley https://doi.org/10.1111/j.1365-2478.2008.00776.x 2024-05-03T10:39:24Z ABSTRACT Airborne gravimetry is an important method for measuring gravity over large unsurveyed areas. This technology has been widely applied in Canada, Antarctica and Greenland to map the gravity fields of these regions and in recent years, in the oil industry. In 2005, two tests in the Italian area were performed by ENI in cooperation with the Politecnico di Milano and the Danish National Space Center. To the knowledge of the authors, these were the first experiments of this kind in Italy and were performed over the Ionian coasts of Calabria and the Maiella Mountains. The Calabria test field is characterized by strong gravity variations due to the geophysical and topographic structure of the area. The ground gravity coverage is also quite dense. It was thus possible to compare airborne gravity with the ground observed values in order to check the precision of the airborne gravimetry. The second campaign was performed in an unsurveyed area centred on the Maiella Mountains, thus filling the data gap of this zone. Comparisons with existing ground data were also carried out in this area. After smoothing, the collected data have an accuracy of 2–3 mgal, as derived by cross‐over analysis. Moreover, the collocation method applied to compare and merge ground‐based and airborne data proved to be efficient and reliable. The standard deviation of the discrepancies between airborne data and collocation upward continued gravity is, in both cases, less than 8 mgal. In the Maiella test, the gravity field obtained by merging airborne and ground data using collocation also provides a more detailed description of the high‐frequency pattern of the geopotential field in this area. Article in Journal/Newspaper Antarc* Antarctica Greenland Wiley Online Library Canada Greenland Geophysical Prospecting 57 4 625 632 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
ABSTRACT Airborne gravimetry is an important method for measuring gravity over large unsurveyed areas. This technology has been widely applied in Canada, Antarctica and Greenland to map the gravity fields of these regions and in recent years, in the oil industry. In 2005, two tests in the Italian area were performed by ENI in cooperation with the Politecnico di Milano and the Danish National Space Center. To the knowledge of the authors, these were the first experiments of this kind in Italy and were performed over the Ionian coasts of Calabria and the Maiella Mountains. The Calabria test field is characterized by strong gravity variations due to the geophysical and topographic structure of the area. The ground gravity coverage is also quite dense. It was thus possible to compare airborne gravity with the ground observed values in order to check the precision of the airborne gravimetry. The second campaign was performed in an unsurveyed area centred on the Maiella Mountains, thus filling the data gap of this zone. Comparisons with existing ground data were also carried out in this area. After smoothing, the collected data have an accuracy of 2–3 mgal, as derived by cross‐over analysis. Moreover, the collocation method applied to compare and merge ground‐based and airborne data proved to be efficient and reliable. The standard deviation of the discrepancies between airborne data and collocation upward continued gravity is, in both cases, less than 8 mgal. In the Maiella test, the gravity field obtained by merging airborne and ground data using collocation also provides a more detailed description of the high‐frequency pattern of the geopotential field in this area. |
format |
Article in Journal/Newspaper |
author |
Barzaghi, R. Borghi, A. Keller, K. Forsberg, R. Giori, I. Loretti, I. Olesen, A.V. Stenseng, L. |
spellingShingle |
Barzaghi, R. Borghi, A. Keller, K. Forsberg, R. Giori, I. Loretti, I. Olesen, A.V. Stenseng, L. Airborne gravity tests in the Italian area to improve the geoid model of Italy |
author_facet |
Barzaghi, R. Borghi, A. Keller, K. Forsberg, R. Giori, I. Loretti, I. Olesen, A.V. Stenseng, L. |
author_sort |
Barzaghi, R. |
title |
Airborne gravity tests in the Italian area to improve the geoid model of Italy |
title_short |
Airborne gravity tests in the Italian area to improve the geoid model of Italy |
title_full |
Airborne gravity tests in the Italian area to improve the geoid model of Italy |
title_fullStr |
Airborne gravity tests in the Italian area to improve the geoid model of Italy |
title_full_unstemmed |
Airborne gravity tests in the Italian area to improve the geoid model of Italy |
title_sort |
airborne gravity tests in the italian area to improve the geoid model of italy |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1111/j.1365-2478.2008.00776.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2478.2008.00776.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2478.2008.00776.x |
geographic |
Canada Greenland |
geographic_facet |
Canada Greenland |
genre |
Antarc* Antarctica Greenland |
genre_facet |
Antarc* Antarctica Greenland |
op_source |
Geophysical Prospecting volume 57, issue 4, page 625-632 ISSN 0016-8025 1365-2478 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2478.2008.00776.x |
container_title |
Geophysical Prospecting |
container_volume |
57 |
container_issue |
4 |
container_start_page |
625 |
op_container_end_page |
632 |
_version_ |
1800741815960207360 |