In this paper, we present a new Bouguer gravity map of the Northern Tuscan offshore (central Italy), based on original gravity data acquired on the islands of the Tuscan Archipelago. Our dataset integrates 274 unpublished gravity field measurements with 126 available marine gravity data of the northern Tyrrhenian Sea. The Bouguer anomaly map shows a westward and southward increase of the regional gravity field associated with the uplift of the Moho boundary from central Apennines towards the Tyrrhenian Sea. At a local scale, several Bouguer anomalies are well associated with the igneous plutons of the Elba, Montecristo and Capraia islands, as a result of a deep density contrast between the granitoid intrusive rocks and the embedding metamorphic basement. The presented Bouguer anomaly map represents a useful tool for future studies of the complex geological and geodynamical setting of the Tuscan Archipelago and of the buried and deep igneous structures.

在本文中，我们根据在托斯卡纳群岛各岛上获得的原始重力数据，提出了北部托斯卡纳近海（意大利中部）的新布格重力图。我们的数据集将274个未公开的重力场测量结果与第勒尼安海北部的126个可用海洋重力数据集成在一起。布格异常图显示，随着莫霍边界从亚平宁山脉中部向第勒尼安海的隆升，区域重力场向西和向南增加。在局部尺度上，由于花岗岩侵入性岩石与埋入的变质基底之间的深层密度对比，一些布格异常与厄尔巴岛，蒙特克里斯托和卡普拉亚岛的火成岩岩层有很好的联系。