Search results for "hot spring"
showing 7 items of 7 documents
ÉTUDE GÉOARCHÉOLOGIQUE D'UN LIEU DE CULTE ROMAIN IMPLANTÉ SUR UNE SOURCE THERMALE : LE SANCTUAIRE DE JEBEL OUST, TUNISIE
2015
The ancient site of Jebel Oust (Tunisia) grew up around a hot spring, which was a focus for worship at the start of the first millennium AD, until it dried up in Late Antiquity. A geoarchaeological study of the hydrological functioning of the spring, catchment mechanisms for hot water and associated anthropic infrastructure makes it possible to trace the environmental history of the sanctuary/hot spring complex and draws on the example of Jebel Oust to provide new evidence supporting the identification of a water cult in the Roman era.
Magma extrusion during the Ubinas 2013-2014 eruptive crisis based on satellite thermal imaging (MIROVA) and ground-based monitoring
2015
International audience; After 3 years of mild gases emissions, the Ubinas volcano entered in a new eruptive phase on September 2nd, 2013. The MIROVA system (a space-based volcanic hot-spot detection system), allowed us to detect in near real time the thermal emissions associated with the eruption and provided early evidence of magma extrusion within the deep summit crater. By combining IR data with plume height, sulfur emissions, hot spring temperatures and seismic activity, we interpret the thermal output detected over Ubinas in terms of extrusion rates associated to the eruption. We suggest that the 2013–2014 eruptive crisis can be subdivided into three main phases: (i) shallow magma intr…
Determination of volatile fatty acids in the hot springs of Vulcano, Aeolian Islands, Italy
1998
Abstract Samples of relatively acid hydrothermal fluids were collected in the spring of 1996 from seeps, springs, and wells on the Island of Vulcano in the southern Tyrrhenian Sea and analyzed for volatile fatty acids 1 using liquid chromatography. Concentrations of VFAs in the seeps were in the range 65–140 ppb formic, 133–184 ppb acetic, and
Anthropogenic travertine between History, Archaeology and Environment: a geoarchaeological study of the Roman site of Jebel Oust, Tunisia.
2013
Travertine, known as lapis tiburtinus during Roman times, are continental limestones precipitated in calcareous environments from thermal waters of hot springs (travertine) or cool waters of karstic springs (calcareous tufa). This phenomenon is well-known during Classical Antiquity and had been described by several ancient authors (Strabo, Pliny the Elder, Vitruvius) who depicted a stone that forms extremely rapidly, a stone that outlines the landscape and which is largely used for construction (e.g. The Colosseum in Roma, the Greek temple at Segesta in Sicily). These deposits are widespread on Earth’s surface showing various morphologies and are great sedimentary records of climatic and hy…
A model for Ischia hydrothermal system: Evidences from the chemistry of thermal groundwaters.
2009
Abstract Ischia volcano, in Central Italy, has long been known for its copious surface hydrothermal manifestations, signs of a pervasive circulation of hot fluids in the subsurface. Because of the significant chemical heterogeneity of fumarolic gas discharges and hot spring discharges, evidences of a complex hydrothermal setting, a definite model of fluid circulation at depth is currently unavailable, in spite of the several previous efforts. Here, we report on the chemical and isotopic composition of 120 groundwater samples, collected during several sampling surveys from 2002 to 2007. The acquired data suggest that the composition of surface manifestations reflect contributions from meteor…
Importance of dispersal and thermal environment for mycorrhizal communities: lessons from Yellowstone National Park
2011
International audience; The relative importance of dispersal and niche restrictions remains a controversial topic in community ecology, especially for microorganisms that are often assumed to be ubiquitous. We investigated the impact of these factors for the community assembly of the root-symbiont arbuscular mycorrhizal fungi (AMF) by sampling roots from geothermal and nonthermal grasslands in Yellowstone National Park (YNP), followed by sequencing and RFLP of AMF ribosomal DNA. With the exception of an apparent generalist RFLP type closely related to Glomus intraradices, a distance-based redundancy analysis indicated that the AMF community composition correlated with soil pH or pH-driven c…
I thermà loutrà di Termini Imerese dalla presenza mitica di Eracle alle terme romane
2019
Le sorgenti calde di Termini Imerese sono legate nel mito raccontato da Diodoro alla presenza di Eracle fin dall'età arcaica. La popolarità dell'eroe nell'isola è confermata dall'evidenza archeologica non solo nella colonia greca di Himera, ma anche nel suo territorio. E' probabile che un edificio termale esistesse nell'area prima dell'età romana, ma è solo dopo la deduzione di una colonia romana a Thermae in età augustea che venne costruito un edificio monumentale riccamente decorato, messo parzialmente in luce da recenti scavi. The thermal springs of Termini Imerese are linked in myth to the presence of Herakles from the Archaic period. The relationship between the tale told by Diodoros o…