Particularly in the presence of a hydrothermal system, many volcanoes output large quantities of heat through the transport of water from deep within the edifice to the surface. Thus, heat flux is a prime tool for evaluating volcanic activity and unrest. We review the volcanic unrest at La Soufrière de Guadeloupe (French West Indies) using an airborne thermal camera survey and in situ measurements of temperature and flow rate through temperature probes, Pitot-tube and MultiGAS measurements. We deduce mass and heat fluxes for the fumarolic, ground and thermal spring outputs and follow these over a period spanning 2000–2020. Our results are compared with published data and we performed a retrospective analysis of the temporal variations in heat flux over this period using the literature data. We find that the heat emitted by the volcano is 36.5 ± 7.9MW, of which the fumarolic heat flux is dominant at 28.3 ± 6.8 MW. Given a total heated area of 26 270 m², this equates to a total heat flux density of 1366 ± 82 W/m², which is amongst the highest established for worldwide volcanoes with hydrothermal systems, particularly for dome volcanoes. A major change at La Soufrière de Guadeloupe, however, is the development of a widespread region of ground heating at the summit where heat output has increased from 0.2 ± 1 MW in 2010 to 5.7 ± 0.9 MW in 2020. This change is concurrent with accelerating unrest at the volcano and the emergence of two new high-flux fumaroles in recent years. Our findings highlight the importance of continued and enhanced surveillance and research strategies at La Soufrière de Guadeloupe, the results of which can be used to better understand hydrothermal volcanic systems the world over.

特别是在存在热液系统的情况下，许多火山通过将水从建筑物内的深处输送到地面而输出大量热量。因此，热通量是评估火山活动和动荡的主要工具。我们使用机载热像仪勘测并通过温度探头，皮托管和MultiGAS测量来对温度和流量进行原位测量，从而回顾了瓜德罗普岛（LaSoufrièrede Guadeloupe）的火山爆发。我们推导了富马，地面和温泉输出的质量和热通量，并在2000–2020年期间对其进行跟踪。我们的结果与已发表的数据进行了比较，我们使用文献数据对这段时间内热通量的时间变化进行了回顾性分析。我们发现火山散发的热量为36.5±7。9兆瓦，其中富马酸热通量为28.3±6.8兆瓦。给定总加热面积26270 m^{如图2所示}，这等于1366±82 W / m ²的总热通量密度，是世界上具有热液系统的火山，特别是圆顶火山的最高热通量密度之一。然而，瓜德罗普岛的索法里耶尔（LaSoufrièrede Guadeloupe）的一个重大变化是在峰会上发展了一个广泛的地热区域，该区域的热量输出从2010年的0.2±1 MW增加到2020年的5.7±0.9 MW。近年来，火山爆发动荡，并且出现了两种新的高通量喷气孔。我们的发现凸显了在瓜德罗普岛进行持续和加强监视和研究策略的重要性，其结果可用于更好地了解全世界的热液火山系统。