Θερμογραφία της Επιφάνειας του Ηφαιστειακού Νησιού Νέας Καμένης με επίγειες μετρήσεις και δορυφορικές εικόνες.

Σκοπός της παρούσας διπλωματικής εργασίας είναι η αποτύπωση και χαρτογράφηση της θερμοκρασίας του εδάφους του ηφαιστειακού νησιού της Νέας Καμένης δορυφορικές εικόνες και με επίγειες ενόργανες μετρήσεις. Η ηφαιστειακή δραστηριότητα της περιοχής, σε συνδυασμό με τα πρόδρομα ηφαιστειακά φαινόμενα που παρατηρήθηκαν πριν μερικά χρόνια (2011 – 2012), καθιστά ιδιαίτερα ενδιαφέρουσα την αποτύπωση της θερμογραφίας της επιφάνειας σε κανονικές συνθήκες. Η υλοποίηση της εργασίας πραγματοποιήθηκε με τη χρήση τηλεπισκόπησης (δεδομένα και δορυφορικές εικόνες από τους δορυφόρους Landsat 5 και Landsat 8) και η επεξεργασία των δεδομένων με τη βοήθεια των γεωγραφικών συστημάτων πληροφοριών (GIS), στα προγράμματα ArcMap (της ESRΙ) και Erdas. Παράλληλα, πραγματοποιήθηκαν και μετρήσεις πεδίου, με οι αισθητήρες μεταλλικού ελάσματος μέτρησης θερμοκρασίας και υγρασίας εδάφους και αέρα και θερμόμετρα υπερύθρων. Οι επίγειες μετρήσεις μπορούν να αποτυπώσουν τις τοπικές διαφοροποιήσεις της θερμοκρασίες στους διαφορετικούς σχηματισμούς και γύρω από τις φουμαρόλες με καλύτερη λεπτομέρεια από τον κάνναβο των δορυφορικών εικόνων (30 ή 100m). Εν συνεχεία, ακολούθησε η συσχέτιση των δεδομένων πεδίου με τα δεδομένα από της δορυφορικές εικόνες, και η εξαγωγή συμπεράσματα για τη συσχέτιση της θερμοκρασίας με τις καιρικές συνθήκες και την ηφαιστειακή δραστηριότητα.The purpose of this thesis is to present into maps the thermography of the volcanic island Nea Kameni. This had been succeeded by ground thermal and land surface measurements of the temperature, in combination with satellite images (Landsat 5 and Landsat 8 data). The area’s volcanic activity, combined with the precursor volcanic phenomena observed a few years ago (2011-2012), makes it particularly interesting to study the surface thermography under normal conditions. The study had been conducted with remote sensing and with GIS for the data processing. Field measurements had also taken place, with metal plate sensors, measuring ground and air humidity, and infrared thermometers. The field measurements can capture local variations in temperatures in different formations and around fumaroles in much better detail than the satellite image grid (30 or 100m). Then, the field data had been correlated with the data from the satellite images, and conclusions had been drawn about the correlation of temperature with weather conditions and volcanic activity

The Story Map for Metaxa Mine (Santorini, Greece): A Unique Site Where History and Volcanology Meet Each Other

Story maps are widespread as an interactive tool used for science and spatial data communication, information and dissemination. A Web-based application using story mapping technology is here presented to show the historical importance of Metaxa Mine, known also as Mavormatis mine. This mine is characterized by the presence of several key outcrops where the pumice layers of the Late Bronze Age (Minoan) eruption are very well exposed. We made up a tailored story map that combines maps, narrative texts, multimedia content and a brand-new 3D model. Its purpose is to highlight the visualisation and the exploitation of Metaxa Mine as a unique “geotope” of Santorini volcano, to enable users to interact with data and maps, texts and images, and to inform academic and non-academic audience about the historical and volcanological aspects of this geological site. The spatial and geological data of this story map involve thematic maps entirely created by a Geographic Information System

Creating a Story Map Using Geographic Information Systems to Explore Geomorphology and History of Methana Peninsula

Story maps are used as an interactive tool for communication and information dissemination. A web-based application using story mapping technology is presented to explore the Methana peninsula. This volcanic area is characterized by specific volcanic geoforms, unique flora and rich history. The story map combines maps, narrative texts and multimedia content. The spatial data produce thematic maps created by a Geographic Information System on geological data, historical monuments, biodiversity and hiking paths. The purpose is to highlight the distinguishing characteristics of the Methana peninsula, to enable users to interact with maps, texts and images and to inform professional and non-professional users about the particular aspects of volcanic areas

The story map for Metaxa Mine (Santorini, Greece): a unique site where history and volcanology meet each other

Summarization: Story maps are widespread as an interactive tool used for science and spatial data communication, informationand dissemination. A Web-based application using story mapping technology is here presented to show the historical importance of Metaxa Mine, known also as Mavormatis mine. This mine is characterized by the presence of several key outcrops where the pumice layers of the Late Bronze Age (Minoan) eruption are very well exposed. We made up a tailored story map that combines maps, narrative texts, multimedia content and a brand-new 3D model. Its purpose is to highlight the visualisation and the exploitation of Metaxa Mine as a unique “geotope” of Santorini volcano, to enable users to interact with data and maps, texts and images, and to inform academic and non-academic audience about the historical and volcanological aspects of this geological site. The spatial and geological data of this story map involve thematic maps entirely created by a Geographic Information System.Παρουσιάστηκε στο: 5th International Conference on Geographical Information Systems Theory, Applications and Managemen

Creating a story map using geographic information systems to explore geomorphology and history of Methana Peninsula

Summarization: Story maps are used as an interactive tool for communication and information dissemination. A web-based application using story mapping technology is presented to explore the Methana peninsula. This volcanic area is characterized by specific volcanic geoforms, unique flora and rich history. The story map combines maps, narrative texts and multimedia content. The spatial data produce thematic maps created by a Geographic Information System on geological data, historical monuments, biodiversity and hiking paths. The purpose is to highlight the distinguishing characteristics of the Methana peninsula, to enable users to interact with maps, texts and images and to inform professional and non-professional users about the particular aspects of volcanic areas.Presented on