Activities of the Italian Geodetic Observatory in Antarctica Angelo GALEANDRO, Alessandro CAPRA University of Modena and Reggio Emilia, Italy Dresden, 4 October 2016

Italian Geodetic Observatory in Antarctica TNB1 antenna TNB1 and TNB2 receivers TNB2 antenna Tide gauge Monumented during the XIII Italian summer campaign (1997-1998) Mario Zucchelli Station 74° 41′ 42″ S 164° 06′ 50.4″ E TNB2 antenna TNB1 and TNB2 CGS Monumented during the XXIII Italian summer campaign (2007-2008)

Italian Geodetic Observatory in Antarctica VLNDEF (Victoria Land Network for DEFormation control) is constituted by 28 points Monumented between the XV (1999-2000) and XVI (2000-2001) Italian summer campaigns Extension of about 130 000 km2 Unevenly data time series VL05 and VL18 seasonal continuous stations (continuous data between November and March) VL01, VL12 and VL30 continuous stations (starting from January 2015) in the context of POLENET-ANET project VL05 (Cape Phillips) GNSS station VL18 (Starr Nunatak) GNSS station

Italian Geodetic Observatory in Antarctica Global and local geodynamic Atmospheric and ocean loading Glacial Isostatic Adjustment Atmospheric studies Continuous GNSS stations measurements Observatory activities Mareographic and gravimetric measurements Global and local geoid modeling

Italian Geodetic Observatory in Antarctica GNSS measurements on VLNDEF Geodynamic modeling of Victoria Land Geodetic monitoring Gravimetric measurements on VLNDEF Geoid modeling at regional scale

Italian Geodetic Observatory in Antarctica Absolute ITRF2008 velocities of VLNDEF sites South-East direction (16.4 mm/yr mean horizontal velocity) Weak uplift (0.5 mm/yr mean vertical velocity) Residual VLNDEF 2D velocities w.r.t. VLNDEF plate model Very small velocities except for some points of the northern sites

Italian Geodetic Observatory in Antarctica Tectonic sketch map of Victoria Land The Northern part of Victoria Land is characterized from a complex tectonics (strike-slips faults) Gravimetric network Significant gravimetric anomalies along transect 1 and 2

Italian Geodetic Observatory in Antarctica Installation of new CGSs Contributes to tectonical characterization of entire Victoria Land Contributes to Geophysical modeling at regional and global level (geoid, GIA, geodynamic) Processing of joint VLNDEF – TAMDEF (*) networks Future plans New gravimetric campaigns Integrated analisys (1) Tranantarctic Mountain DEFormation network for measurements of rock and ice motions in South Victoria Land, managed by UNAVCO

Italian Geodetic Observatory in Antarctica GNSS and gravimetric measurements on VLNDEF sites Main activities of the XXX Italian summer campaign (2014-2015) Installation of 3 remote Continuous GNSS Station on pre-existing VLNDEF sites

Italian Geodetic Observatory in Antarctica Installation of 3 new remote CGS equipped with Trimble NETRS GPS receivers and Trimble TRM59800.00 antennae on pre-existing VLNDEF sites (1) GPS data, 30 s acquisition rate, 3° elevation angle (2) Site VL01 (Tombstone Hills) Site VL12 (Mount Cassino) Site VL30 (South Mount Bruce) (1) A collaboration with UNAVCO (University NAVstar COnsortium), in the context of POLENET (POLar Earth observing NETwork) - ANET (Antarctica NETwork monitoring) project. (2) Data are available daily and downloadable from ftp://data-out.unavco.org/pub/rinex/obs/.

Italian Geodetic Observatory in Antarctica TNB1 hardware and data transfer framework upgrade Main activities of the XXXI Italian summer campaign (2015-2016) Tide gauge upgrade Installation of 2 new remote Continuous GNSS Station

Italian Geodetic Observatory in Antarctica Ashtech Z-12 GPS receiver TNB1 hardware upgrade Ashtech Z-12 GPS receiver Ashtech 700936D antenna Only GPS data 30 s acquisition rate 5° elevation angle Leica GS25 GNSS receiver Leica AT504 antenna GPS + GLONASS data 15 s acquisition rate 3° elevation angle

Italian Geodetic Observatory in Antarctica Current configuration TNB1 GNSS station TNB2 GNSS station VDSL modem Intranet "Old PAT" room Primary PC Backup PC "New PAT" room HERMES server Mario Zucchelli Station, Antarctica IGOA server Italy Internet Users all over the world Old configuration Data transfer framework upgrade TNB1 GPS station TNB2 GNSS station Serial modem PC “TNB1” PC “TNB2” "Old PAT" room

Italian Geodetic Observatory in Antarctica Installation of 2 new remote CGS equipped with Tocpon Net-G3 GNSS receivers and Topcon CR-G5 antennae (1) GPS + GLONASS data, 15 s acquisition rate, 3° elevation angle (2) Site INXP (Inexpressible Island) Site LRSN (Mount Larsen) (1) A collaboration with the Observations and Analysis of Earth and Climate Laboratory of ENEA TPSS (Territorial and Production Systems Sustainability) department, in the context of MALOX (MAss LOss in wind fluX) project. (2) Data are not available daily and are recovered during every campaign.

Italian Geodetic Observatory in Antarctica IGOA framework, collected data and further more on the new IGOA internet site (under construction) http://www.geomatica.unimore.it/site/home/antarctica.html