Εξώφυλλο

Χαρακτηριστικές ιδιότητες σεισμικών καταγραφών στον Άρη και η συμβολή τους στη μελέτη της δομής του πλανήτη = Characteristic properties of seismic recordings on Mars and their contribution to the study of the structure of the planet.

Ουρανία Αθανάσιος Κοντού

Περίληψη


Η αποστολή Insight η οποία προσεδαφίστηκε στον πλανήτη Άρη το έτος 2018 και λειτούργησε συνολικά τέσσερα χρόνια, χρονικό διάστημα σχεδόν διπλάσιο της αρχικής εκτίμησης, είχε ως κύριο στόχο
την μελέτη της σεισμικότητας του πλανήτη Άρη που χρησιμοποιήθηκε ως βασικό εργαλείο για την ανακατασκευή της εσωτερικής δομής του.Για την πραγματοποίηση αυτής της ανακατασκευής ήταν φυσικά
απαραίτητη η χρήση και άλλων γεωφυσικών, γεωδυναμικών και γεωχημικών δεδομένων.Στην εργασία αυτή περιγράφονται τα χαρακτηριστικά και οι κατηγορίες των σεισμών που καταγράφηκαν στην διάρκεια
της αποστολής καθώς και η πληθώρα των μη σεισμικών γεγονότων, πολλά από τα οποία παρατηρήθηκαν πρώτη φορά, που απαντώνται στις καταγραφές και δυσχεραίνουν την αναγνώριση των γεγονότων
σεισμικής προέλευσης.Ακόμα παρουσιάζονται τα αποτελέσματα και τα μοντέλα που έχουν προκύψει για την εσωτερική δομή του πλανήτη Άρη.Επίσης, από την μελέτη 12 γεγονότων Α ποιότητας έγινε
εμφανής η συσχέτιση μεταξύ της επικεντρικής απόστασης και του χρόνου καταγραφής των σεισμικών κυμάτων μετά την εξάλειψη των αβεβαιοτήτων που σχετίζονται με το διαφορετικό μέγεθος των
γεγονότων που χρησιμοποιήθηκαν στην παρούσα μελέτη.

The Insight mission that landed on planet mars in the year 2018 and (was active) for (4) four years in total, a time period almost double than the the original nominal operation period,had
as a main goal the study of the seismicity of planet Mars, which was used as the primary tool for the reconstruction of its internal structure.For the actualization of this reconstruction
it was naturally necessary the use of more geophysical, geodynamic and geochemical data.In this thesis are described (analysed) the characteristics and the types (categories) of the seismic
events which were observed during the mission, as well as the vast amount of the non-seismic events, a lot of which were observed for the very first time, that are present in the recordings
and make the recognition of the seismic events more difficult. Moreover, the results and the models that have been developed for the internal structure of the planet Mars  are presented.
Furthermore, from the study(analysis) of twelve(12) type A events the correlation between the epicentral distance and the time of recording of the seismic waves became clear, after removing
the uncertainty related to the different size of the events used in  the current paper.

Πλήρες Κείμενο:

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Αναφορές


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Διαδικτυακές Πηγές

Insight fact sheet -https://mars.nasa.gov/resources/22071/insight-fact-sheet/?site=insight

Ιστοσελίδα SEIS -https://www.seis-insight.eu/en/

Σεισμικός Κατάλογος

InSight Mars SEIS Data Service. (2019). SEIS raw data, Insight Mission. IPGP, JPL, CNES, ETHZ, ICL, MPS, ISAE-Supaero, LPG, MFSC.

https://doi.org/10.18715/SEIS.INSIGHT.XB_2016

"We acknowledge NASA, CNES, their partner agencies and Institutions (UKSA, SSO, DLR, JPL, IPGP-CNRS, ETHZ, IC, MPS-MPG) and the flight operations team at JPL, SISMOC, MSDS, IRIS-DMC and PDS for providing SEED SEIS data."


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