Evaluating landfast sea ice stress and fracture in support of operations on sea ice using SAR interferometry

Dammann, Dyre Oliver; Eicken, Hajo; Mahoney, Andrew R.; Meyer, Franz J.; Freymueller, J. T.; Kaufman, A. M.

doi:10.1016/j.coldregions.2018.02.001

Cited by 25 publications

(47 citation statements)

References 49 publications

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“…Several studies have been carried out on investigating the effectiveness of Differential SAR Interferometry (D-InSAR) on the detection of land movements. D-InSAR has been used successfully for monitoring land subsidence [5][6][7][8][9] and uplift, with particular applications such as landslides [10][11][12] and other ground displacements caused by natural occurring phenomena such as earthquakes [13][14][15], volcano eruptions [16][17][18][19], and also human activities [20,21]. D-InSAR can be used to detect and monitor, under certain conditions, ground deformations on a centimetric scale, offering an effective method for assessing land movements over large areas [22].…”

Section: Introductionmentioning

confidence: 99%

The Use of Sentinel-1 Synthetic Aperture Radar (SAR) Images and Open-Source Software for Cultural Heritage: An Example from Paphos Area in Cyprus for Mapping Landscape Changes after a 5.6 Magnitude Earthquake

Tzouvaras

Kouhartsiouk²,

Αγαπίου

et al. 2019

Remote Sensing

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Active satellite remote sensors have emerged in the last years in the field of archaeology, providing new tools for monitoring extensive cultural heritage landscapes and areas. These active sensors, namely synthetic aperture radar (SAR) satellites, provide systematic datasets for mapping land movements triggered from earthquakes, landslides, and so on. Copernicus, the European program for monitoring the environment, provides continuous radar datasets through the Sentinel-1 mission with an almost worldwide coverage. This paper aims to demonstrate how the use of open-access and freely distributed datasets such as those under the Copernicus umbrella, along with the exploitation of open-source radar processing software, namely the sentinel applications platform (SNAP) and SNAPHU tools, provided respectively by the European Space Agency (ESA) and the University of Stanford, can be used to extract an SAR interferogram in the wider area of Paphos, located in the western part of Cyprus. The city includes various heritage sites and monuments, some of them already included in the UNESCO World Heritage list. The interferogram was prepared to study the effects of an earthquake to the buildings and sites of the area. The earthquake of a 5.6 magnitude on the Richter scale was triggered on 15 April 2015 and was strongly felt throughout the whole island. The interferogram results were based on Differential Synthetic Aperture Radar Interferometry (D-InSAR) methodology, finding a maximum uplift of 74 mm and a maximum subsidence of 31 mm. The overall process and methodology are presented in this paper.

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Section: Introductionmentioning

confidence: 99%

The Use of Sentinel-1 Synthetic Aperture Radar (SAR) Images and Open-Source Software for Cultural Heritage: An Example from Paphos Area in Cyprus for Mapping Landscape Changes after a 5.6 Magnitude Earthquake

Tzouvaras

Kouhartsiouk²,

Αγαπίου

et al. 2019

Remote Sensing

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“…Prior studies have demonstrated the utility of InSAR over landfast ice as a planning tool for on-ice operations (Dammann et al, 2018a;Dammann et al, 2018b) but we argue here that such utility and potential applications also extend to maritime activities and shipping. In regards to the latter, vessel traffic typically does not traverse landfast ice.…”

Section: Temporarily Stabilized Pack Icementioning

confidence: 75%

“…In recent studies, InSAR has also been shown to reveal plausible rheologies for landfast ice (Dammert et al, 1998) and has been used to determine the origin of internal ice stresses (Berg et al, 2015). Combined with inverse modeling, InSAR also allows to determine ice deformation modes (Dammann et al, 2016), rates, and the associated stress and fracture potentials (Dammann et al, 2018b). 10…”

Section: Remote Sensing Of Landfast Sea Ice Stabilitymentioning

confidence: 99%

“…This example demonstrates that it may be possible to detect precursors to break-out events without rigorous inverse model-based interpretation of fringe patterns (e.g., Dammann et al, 2016;Dammann et al, 2018b), which does not easily lend itself to operational workflows. Evaluating the interferograms leading up to the failure of the ice arch, suggests that InSAR has the ability 30 to inform stakeholders of changing stability and ice movement with potential value for an early warning system designed to alert ice users of hazards related to ice movement.…”

Section: Temporarily Stabilized Pack Icementioning

confidence: 99%

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Landfast sea ice stability – mapping pan-Arctic ice regimes with implications for ice use, subsea permafrost and marine habitats

Dammann

Eriksson

Mahoney

et al. 2018

Preprint

Self Cite

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Arctic landfast sea ice has undergone substantial changes in recent decades affecting ice stability with potential impacts on ice travel by coastal populations and industry ice roads. The role of landfast ice as an important habitat has also 10 evolved. We present a novel approach to evaluate sea ice stability on a pan-Arctic scale using Synthetic Aperture Radar Interferometry (InSAR). Using Sentinel-1 images from spring 2017, the approach discriminates between bottomfast, with critical relevance for subsea permafrost, as well as stabilized and non-stabilized floating landfast ice over the main marginal seas of the Arctic Ocean (Beaufort, Chukchi, East Siberian, Laptev and Kara Seas). The analysis draws on evaluation of small-scale lateral motion derived from relative changes in interferometric fringe patterns. This first comprehensive assessment of Arctic bottomfast 15 sea ice extent revealed that by area most of the bottomfast sea ice is situated around river mouths and coastal shallows in the Laptev and East Siberian Seas, covering roughly 4.1 and 5.5 thousand km2 respectively. The fraction between non-stabilized and stabilized ice is lowest in the Beaufort at almost unity, and highest in the adjacent Chukchi Sea. Beyond the simple delineation of landfast ice zones, this work provides a new understanding of how stability regimes may vary between regions and over time.InSAR-derived stability data may serve as a strategic planning and tactical decision-support tool for different uses of coastal ice. 20 Such information may also inform assessments of important sea ice habitats. In a case study, we examined an ice arch situated in Nares Strait demonstrating that interferograms may reveal early-warning signals for the break-up of stationary sea ice.

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“…InSAR is a technique that utilizes the phase component of complex SAR scenes. The phase difference between two scenes is related to the topography or the motion of the ice [26][27][28]. Hence, for stable landfast ice, the phase difference is nearly directly proportional to ice topography if the scenes are acquired within roughly one second [26,29].…”

Section: Introductionmentioning

confidence: 99%

Evaluating Landfast Sea Ice Ridging near UtqiaġVik Alaska Using TanDEM-X Interferometry

et al. 2020

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Seasonal landfast sea ice stretches along most Arctic coastlines and serves as a platform for community travel and subsistence, industry operations, and as a habitat for marine mammals. Landfast ice can feature smooth ice and areas of m-scale roughness in the form of pressure ridges. Such ridges can significantly hamper trafficability, but if grounded can also serve to stabilize the shoreward ice. We investigate the use of synthetic aperture radar interferometry (InSAR) to assess the formation and movement of ridges in the landfast sea ice near Utqiaġvik, Alaska. The evaluation is based on the InSAR-derived surface elevation change between two TanDEM-X bistatic image pairs acquired during January 2012. We compare the results with backscatter intensity, coastal radar data, and SAR-derived ice drift and evaluate the utility of this approach and its relevance for evaluation of ridge properties, as well as landfast sea ice evolution, dynamics, and stability. Data Curation, M.M.; Writing-Original Draft Preparation, M.M.; Writing-Review & Editing

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Evaluating landfast sea ice stress and fracture in support of operations on sea ice using SAR interferometry

Cited by 25 publications

References 49 publications

The Use of Sentinel-1 Synthetic Aperture Radar (SAR) Images and Open-Source Software for Cultural Heritage: An Example from Paphos Area in Cyprus for Mapping Landscape Changes after a 5.6 Magnitude Earthquake

The Use of Sentinel-1 Synthetic Aperture Radar (SAR) Images and Open-Source Software for Cultural Heritage: An Example from Paphos Area in Cyprus for Mapping Landscape Changes after a 5.6 Magnitude Earthquake

Landfast sea ice stability – mapping pan-Arctic ice regimes with implications for ice use, subsea permafrost and marine habitats

Evaluating Landfast Sea Ice Ridging near UtqiaġVik Alaska Using TanDEM-X Interferometry

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