A5008034740- earthquake and tectonic studies
- Geological and Geochemical Analysis
- Maritime and Coastal Archaeology
- Methane Hydrates and Related Phenomena
- Marine and environmental studies
- Geology and Paleoclimatology Research
- 3D Surveying and Cultural Heritage
- High-pressure geophysics and materials
- Geological and Geophysical Studies
- Geological and Tectonic Studies in Latin America
- Geochemistry and Geologic Mapping
- Remote Sensing and LiDAR Applications
- Seismic Imaging and Inversion Techniques
- Seismology and Earthquake Studies
- Hydrocarbon exploration and reservoir analysis
- Seismic Waves and Analysis
- Geological formations and processes
- Underwater Vehicles and Communication Systems
- Geological Modeling and Analysis
- Underwater Acoustics Research
- Earthquake Detection and Analysis
- Archaeological Research and Protection
- Archaeology and ancient environmental studies
- Microbial Community Ecology and Physiology
- Geographic Information Systems Studies
National and Kapodistrian University of Athens
2015-2024
International Ocean Discovery Program
2024
Expedition (United Kingdom)
2024
GEOMAR Helmholtz Centre for Ocean Research Kiel
2022
Imperial College London
2021
Hellenic Centre for Marine Research
2002-2017
University of Rhode Island
2011
Marine Research Centre
2001
The most recent major explosive eruption of the Santorini volcano in Greece—around 3600 years before present (B.P.), often referred to as Minoan eruption—is one largest volcanic events known historical time and has been subject intense volcanological archeological studies [ Druitt et al ., 1999]. submarine Kolumbo, located seven kilometers northeast associated with Santorini's tectonic system, erupted explosively 1650 A.D., resulting fatalities on island Thera Fouqué , 1879]. A large...
Abstract Microbathymetry data, in situ observations, and sampling along the 13°20′N oceanic core complexes (OCCs) reveal mechanisms of detachment fault denudation at seafloor, links between tectonic extension mass wasting, expose nature corrugations, ubiquitous OCCs. In initial stages faulting high‐angle fault, scarps show extensive wasting that reduces their slope. Flexural rotation further lowers scarp slope, hinders resulting morphologically complex chaotic terrain breakaway denuded...
We report on integrated geomorphological, mineralogical, geochemical and biological investigations of the hydrothermal vent field located floor density-stratified acidic (pH ~ 5) crater Kolumbo shallow-submarine arc-volcano, near Santorini. features rare geodynamic setting at convergent boundaries, where arc-volcanism seafloor activity are occurring in thinned continental crust. Special focus is given to unique enrichments polymetallic spires Sb Tl (±Hg, As, Au, Ag, Zn) indicating a new...
Despite their global societal importance, the volumes of large-scale volcanic eruptions remain poorly constrained. Here, we integrate seismic reflection and P-wave tomography datasets with computed tomography-derived sedimentological analyses to estimate volume iconic Minoan eruption. Our results reveal a total dense-rock equivalent eruption 34.5 ± 6.8 km³, which encompasses 21.4 3.6 km³ tephra fall deposits, 6.9 2 ignimbrites, 6.1 1.2 intra-caldera deposits. 2.8 1.5 material consists...
Abstract Periods of unrest at caldera‐forming volcanic systems characterized by increased rates seismicity and deformation are well documented. Some can be linked to eventual eruptive activity, while others followed a return quiescence. Here we use 20 year record interferometric synthetic aperture radar (InSAR) GPS measurements from Santorini volcano further our understanding geodetic signals during the periods both quiescence unrest, with spanning phase slow subsidence (1993–2010), (January...
Abstract Caldera-forming eruptions of island volcanoes generate tsunamis by the interaction different eruptive phenomena with sea. Such are a major hazard, but forward models their impacts limited poor understanding source mechanisms. The caldera-forming eruption Santorini in Late Bronze Age is known to have been tsunamigenic, and caldera collapse has proposed as mechanism. Here, we present bathymetric seismic evidence showing that was not open sea during main phase eruption, flooded once...
The morphology of a volcanic edifice reflects the integrated eruptive and evolutionary history that system, can be used to reconstruct time-series prior eruptions. We present new high-resolution merged LiDAR-bathymetry grid, which has enabled detailed mapping both onshore offshore historic lava flows Kameni islands, emplaced in centre Santorini caldera since at least AD 46. identify three submarine flows: two flows, unknown age, lie east Nea third flow, located north appears predate...
Abstract Submarine volcanism represents ~80% of the volcanic activity on Earth and is an important source mantle-derived gases. These gases are basic importance for comprehension mantle characteristics in areas where subaerial missing or strongly modified by presence crustal/atmospheric components. Though, study submarine remains a challenge due to their hazardousness sea-depth. Here, we report 3 He/ 4 He measurements CO 2 –dominated discharged at 500 m below sea level from high-temperature...
Abstract Large explosive volcanic eruptions from island arcs pour pyroclastic currents into marine basins, impacting ecosystems and generating tsunamis that threaten coastal communities infrastructures. Risk assessments require robust records of such highly hazardous events, which is challenging as most the products lie buried under sea. Here we report discovery by IODP Expedition 398 a giant rhyolitic pumice deposit emplaced 520 ± 10 ky ago at water depths 200 to 1000 m during...
Research Article| September 01, 2013 CO2 degassing from hydrothermal vents at Kolumbo submarine volcano, Greece, and the accumulation of acidic crater water Steven Carey; Carey 1Graduate School Oceanography, University Rhode Island, 215 S. Ferry Road, Narragansett, Island 02882, USA Search for other works by this author on: GSW Google Scholar Paraskevi Nomikou; Nomikou 2Faculty Geology Geoenvironment, Athens, Zografou, 157 84 Greece Katy Croff Bell; Bell Marvin Lilley; Lilley 3School...
Abstract This study reports the first detailed geochemical characterization of Kolumbo submarine volcano in order to investigate role source heterogeneity controlling variability within Santorini volcanic field central Aegean arc. Kolumbo, situated 15 km northeast Santorini, last erupted 1650 AD and is thus closely associated with system space time. Samples taken by remotely‐operated vehicle that were analyzed for major element, trace element Sr‐Nd‐Hf‐Pb isotope composition include...
Studies of submarine hydrothermal systems in Mediterranean Sea are limited to the southern Italian volcanism, while totally missing Aegean. Here we report on geochemistry high-temperature fluids (up 220°C) venting at 500 m b.s.l. from floor Kolumbo volcano (Hellenic Volcanic Arc, Greece), which is located 7 km northeast Santorini Island. Despite recent unrest Santorini, considered more active due a higher seismicity. Rizzo et al. (2016) investigated He-isotope composition gases collected...