The submerged border of the Phlegrean Fields caldera (Bay of Naples, Southern Tyrrhenian sea, Italy) has been identified based on combined interpretation of high resolution magnetic anomaly map and Digital Terrain Model of the Naples Bay. High resolution magnetic and bathymetric data have been recorded during several oceanographic cruises carried out by the CNR IAMC Institute of Naples, Italy, onboard of the research vessel Urania of the National Research Council of Italy. A Total Magnetic Field survey was recently carried out in the Naples Bay having an advanced spatial coverage with respect to previous measurements such as airborne magnetic survey recorded by AGIP in the 1981. Moreover the data were acquired at a shorter distance from the source and a lower velocity giving more precise sampling and improved field restoration. The caldera border shows a NE-SW structural elongment parallel to that of the Sarno-Sebeto-Dohrn canyon normal fault controlling downthrowing in the Naples Bay half graben. It is located in correspondence to the outer shelf of the Gulf of Pozzuoli and to the submerged volcanic banks of Nisida, Miseno and Pentapalummo. It represents a relatively complex magnetic anomaly area characterized by several magnetic anomaly fields having different intensities.
The submerged border of the Phlegrean Fields caldera (Bay of Naples, Southern Tyrrhenian sea, Italy): constraints from high resolution magnetic data and Multibeam bathymetry
Gemma Aiello;Ennio Marsella;
2007
Abstract
The submerged border of the Phlegrean Fields caldera (Bay of Naples, Southern Tyrrhenian sea, Italy) has been identified based on combined interpretation of high resolution magnetic anomaly map and Digital Terrain Model of the Naples Bay. High resolution magnetic and bathymetric data have been recorded during several oceanographic cruises carried out by the CNR IAMC Institute of Naples, Italy, onboard of the research vessel Urania of the National Research Council of Italy. A Total Magnetic Field survey was recently carried out in the Naples Bay having an advanced spatial coverage with respect to previous measurements such as airborne magnetic survey recorded by AGIP in the 1981. Moreover the data were acquired at a shorter distance from the source and a lower velocity giving more precise sampling and improved field restoration. The caldera border shows a NE-SW structural elongment parallel to that of the Sarno-Sebeto-Dohrn canyon normal fault controlling downthrowing in the Naples Bay half graben. It is located in correspondence to the outer shelf of the Gulf of Pozzuoli and to the submerged volcanic banks of Nisida, Miseno and Pentapalummo. It represents a relatively complex magnetic anomaly area characterized by several magnetic anomaly fields having different intensities.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
