Abstract. We analysed volume change and mass balance of outlet glaciers on the northern Antarctic Peninsula over periods 2011 to 2013 2016, using high-resolution topographic data from bistatic interferometric radar satellite mission TanDEM-X. Complementary geodetic method that applies DEM differencing, we computed net main budget method, accounting for difference between surface (SMB) discharge ice into an ocean or shelf. The SMB values are based output regional climate model RACMO version...

Abstract. The northern and southern Patagonian ice fields (NPI SPI) have been subject to accelerated retreat during the last decades, with considerable variability in magnitude timing among individual glaciers. We derive spatially detailed maps of surface elevation change (SEC) NPI SPI from bistatic synthetic aperture radar (SAR) interferometry data Shuttle Radar Topography Mission (SRTM) TerraSAR-X add-on for Digital Elevation Measurements (TanDEM-X) two epochs, 2000–2012 2012–2016, provide...

We compare ice elevation from TanDEM-X DEMs of 2011/2012 and SRTM DEM 2000 over the Southern Patagonia Icefield (SPI) in order to quantify volume loss icefield last decade. The map change rate is discussed. Detailed results are shown for two glaciers: Jorge Montt Pio XI, exhibiting opposite trends front position.

Observations of ice flow velocity with TerraSAR-X were carried out over main outlet glaciers the Southern Patagonia Icefield (SPI) since 2008 by means amplitude correlation technique. Velocity data are required to estimate export due calving. Furthermore we compare elevation from a TanDEM-X DEM 2011 and an SRTM 2000 in order quantify volume loss these last decade. Results shown for three central section SPI, exhibiting distinct differences observed trends surface topography velocity.

We compare ice elevation from TanDEM-X Raw DEMs of summer 2014 and the SRTM C-band DEM 2000 over Northern Patagonian Icefield (NPI) in order to obtain a detailed map change rates last 14 years. The geodetic method is used compute mass balance for this region nearby Southern (SPI). outlined along with error budget estimation. backscattering coefficient data analyzed exclude biases due signal penetration snow firn.

Abstract. We analyzed volume change and mass balance of outlet glaciers on the northern Antarctic Peninsula over periods 2011 to 2013 2016, using high resolution topographic data bistatic interferometric radar satellite mission TanDEM-X. Complementary geodetic method applying DEM differencing, we computed net main by input/output method, accounting for difference between surface (SMB) discharge ice into an ocean or shelf. The SMB values are based output regional climate model RACMO Version...

Our paper reports about temporal changes of the Earth's topography found in first samples TanDEM-X data when compared to SRTM Digital Elevation Models collected ten years earlier. We give an accuracy prediction and explain methods avoid systematic errors from biases phase unwrapping ambiguities. provides examples different Earth surface domains such as glaciers, volcanoes, mining activity urban areas. demonstrate conclude that higher resolution a DEM gets, more frequent updates are required...

We report on results from spaceborne velocity and topography measurements of the Drygalski glacier, Antarctic Peninsula. For our analysis we use a time series TerraSAR-X data acquired between 2007 2010 which enables us to perform an error determine higher order parameters such as acceleration. Our estimated accuracy for estimation is 2 cm/day find weak slow down at terminus glacier. Very first TanDEM-X single pass interferometric sets in allow reconstruct 3D-glacier with unprecedented...

The Recovery Ice Stream with its large catchment basin plays an important role in discharging ice from East Antarctica into the Weddell Sea through Filchner Shelf. Its scientific interest is also linked to discovery that flow influenced by discharge of several subglacial lakes, which could trigger a faster due reduced friction on glacier bed. We analyzed surface elevations Glacier system derived time series TanDEM-X data focus location lakes. absolute calibration DEMs was performed using...

An incoherent correlation approach is used to derive ice motion fields for outlet glaciers through the Transantarctic Mountains, Antarctica. High-resolution repeat-pass, left-looking-mode TerraSAR-X data from 2009 were analyzed. Detailed velocity patterns on Nimrod glacier basin and Starshot are presented.

We analyzed ice velocities and surface elevations of the Recovery Glacier system in Antarctica derived from TerraSAR-X TanDEM-X data. Our high resolution velocity mosaic was generated with speckle tracking applied to data acquired 2012 2013 using left looking mode. Flow variations along main trunk is discussed. In addition we processed 5 strips into calibrated DEMs. The Operation Icebridge ATM profiles crossing elevation show very similar patterns confirming capability SAR DEMs provide...

We compare ice elevation from a TanDEM-X DEM of September 2013 and the SRTM 2000 over main glaciers Northern Patagonia Icefield (NPI) in order to quantify change rates last 13 years. The applied procedure obtained results are discussed. In have more comprehensive picture dynamics for this region, flow velocity maps S. Quintin Rafael feature tracking TerraSAR-X high resolution repeat pass images.

The TanDEM-X satellite mission through its bistatic formation provides high horizontal and vertical resolution topographic data. Multi temporal acquisitions allow short term analysis of variations the earth surface elevation which in turn can be converted to volume changes. We are investigating capabilities data detect map changes at glacier surfaces two different situations. One study case is Jorge Montt outlet South Patagonia Icefield known for accelerated mass depletion front retreat....

We discuss TerraSAR-X observations of three Transantarctic Mountain (TAM) outlet glaciers: Byrd, Nimrod and Beardmore. High resolution data acquired over the area in late 2009 2010 using left looking mode were processed to generate detailed 2D ice velocity maps by means speckle tracking. The dynamics from East Antarctica Ross Ice Shelf through TAM fjords is compared. position grounding line determined DInSAR compared other sources. surface at needed for estimating magnitude flux fast...

We discuss TerraSAR-X observations of two Transantarctic Mountain outlet glaciers, Nimrod and Byrd. High resolution data acquired over the area in late 2009 2010 using left looking mode were processed to generate detailed 2D ice velocity maps by speckle tracking. The patterns flow from East Antarctica Ross Ice Shelf are analyzed compared means longitudinal transverse transects. Detailed knowledge about surface is crucial for estimating magnitude flux understanding dynamics fast glaciers that...

Recent glacier surface elevation changes are obtained with unprecedented coverage and accuracy using multitemporal bistatic InSAR DEMs acquired by the TanDEM-X mission launched in 2010 still ongoing. The geodetic method is used to compute mass balance corresponding contribution sea level rise. investigated glaciers located Northern Southern Patagonian Icefields (NPI, SPI), which extremely dynamic underwent strong downwasting last decades. uncertainty of results assessed, also considering...

This letter aims to discuss a general framework that allows the direct interpretation of wrapped differential synthetic aperture radar interferometry phase in terms surface strain S and rotation R components. The methodology is demonstrated showing estimation components glacier flow using three TerraSAR-X interferometric geometries (ascending right-looking, descending left-looking). Finally, since left-looking geometry can be difficult obtain on regular basis, parallel assumption extended...

Abstract. The Northern and Southern Patagonian icefields (NPI SPI) have been subject to accelerated retreat during the last decades with considerable variability in magnitude timing among individual glaciers. We derive spatially detailed maps of surface elevation change (SEC) NPI SPI from bistatic SAR interferometry data SRTM TanDEM-X for two epochs, 2000–2012 2012–2016 provide on changes ice volume glaciers at large. apply advanced processing techniques allowing cover 90 % 95 area 97 98...

We report on a method and experiments to achieve about 3 centimeters pixel location accuracy of TerraSAR-X SAR images. The is based atmospheric refraction corrections, Earth tide compensation image correlation or the use corner reflectors. Our does not exploit phase therefore subject unwrapping problems unknown offsets.