Iceberg and sea ice drift tracking and analysis off north-east Greenland

Yulmetov, Renat; Marchenko, Aleksey; Løset, Sveinung

doi:10.1016/j.oceaneng.2016.07.012

Cited by 20 publications

(14 citation statements)

References 25 publications

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“…Figure 15 shows similarities between iceberg and sea-ice drift velocities, which suggests that icebergs-particularly smaller icebergs-in the Amundsen Sea were also highly influenced by drifting sea ice. The lower drift velocities in winter might be caused by the fact that icebergs are being frozen in sea ice, which was also observed by Marko et al (1982) and Yulmetov et al (2016) in the Arctic and Schodlok et al (2006) in the Weddell Sea.…”

Section: Fig 16mentioning

confidence: 73%

The life cycle of small- to medium-sized icebergs in the Amundsen Sea Embayment

2019

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An object-based method for automatic iceberg detection has been applied to Advanced Synthetic Aperture Radar images in the Amundsen Sea Embayment (ASE), Antarctica. The images were acquired between 1 January 2006 and 8 April 2012 under varying meteorological, oceanographic and sea-ice conditions. During this time period, the icebergs were counted (average 1370 ± 50) and their surface area was estimated (average 1537.5 km 2). The average surface area was about 2.5 times larger than the annual calved area (620 km 2), indicating that the average iceberg age in the ASE is about 2.5 years, which was confirmed by observed residence times based on drift tracks. Most of the ASE icebergs were less than 1500 m long, and almost 90% of them were smaller than 2 km 2. The proportion of small-and medium-sized icebergs (84.4%) was significantly higher than in the open ocean, where large icebergs (>10 km 2) account for nearly the whole iceberg surface area. The opposite was true for the freshly calved icebergs in the ASE. The data indicate that the creation of icebergs in the ASE is dominated by steady small-to medium-scale calving from ice shelves fringing the embayment. In addition, rare calving events of giant icebergs occur on a decadal timescale. There is also some import of icebergs from the Bellingshausen Sea further east along the coast, in particular after large calving events there.

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Section: Fig 16mentioning

confidence: 73%

The life cycle of small- to medium-sized icebergs in the Amundsen Sea Embayment

2019

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“…Kenneth Eik et al [9,10] present methodologies for both systematic evaluation of the need for the iceberg management system and structural reliability based on the experiences from the Canadian iceberg detection studies. By tracking of 9 icebergs and 10 ice floes in the Kanumas area of the Greenland Sea during 2012-2014, Renat Yulmetov et al [11] proposes an iceberg drift model including the rotation. Robert S. Pritchard et al [12] present a blended mechanistic-statistical ice motion model for shortterm forecasts by virtue of an investigation of coherent ice drift features associated with individual ice beacons during winter 2008.…”

Section: Fig 1 Typical Sea Ice Detection Methods Used Throughout Thmentioning

confidence: 99%

Sea Ice Management for Oil and Gas Platforms in the Bohai Sea

Zhang

Wang

et al. 2017

Polish Maritime Research

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Bohai is a typical marginal oil field in an ice region, where most of the oil and gas platforms are economical. Sea ice is the main factor that affects the safety of oil and gas platforms in Bohai. Due to the complexity of the ice load and ice-induced vibrations, there are large security risks when developing Bohai oil and gas in the winter. It is difficult to ensure the safe production of oil and gas in winter using existing sea ice disaster warning technologies. Based on winter oil and gas production in the Bohai

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“…Icebergs play an important role in Polar ocean environments [ [1] , [2] , [3] ], and can also threaten marine infrastructure [ [4] , [5] , [6] ]. Observations of iceberg translation and rotation are relatively rare, as are oceanographic observations in the vicinity of drifting icebergs.…”

Section: Methods Detailsmentioning

confidence: 99%

Adapting open-source drone autopilots for real-time iceberg observations

Carlson

Rysgaard

2018

MethodsX

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Drone autopilots are naturally suited for real-time iceberg tracking as they measure position and orientation (pitch, roll, and heading) and they transmit these data to a ground station. We powered an ArduPilot Mega (APM) 2.6 with a 5V 11 Ah lithium ion battery (a smartphone power bank), placed the APM and battery in a waterproof sportsman’s box, and tossed the box and its contents by hand onto an 80 m-long iceberg from an 8 m boat. The data stream could be viewed on a laptop, which greatly enhanced safety while collecting conductivity/temperature/depth (CTD) profiles from the small boat in the iceberg’s vicinity. The 10 s position data allowed us to compute the distance of each CTD profile to the iceberg, which is necessary to determine if a given CTD profile was collected within the iceberg’s meltwater plume. The APM position data greatly reduced position uncertainty when compared to 5 min position data obtained from a Spot Trace unit. The APM functioned for over 10 h without depleting the battery. We describe the specific hardware used and the software settings necessary to use the APM as a real-time iceberg tracker. Furthermore, the methods described here apply to all Ardupilot-compatible autopilots. Given the low cost ($90) and ease of use, drone autopilots like the APM should be included as another tool for studying iceberg motion and for enhancing safety of marine operations.Commercial off-the-shelf iceberg trackers are typically configured to record positions over relatively long intervals (months to years) and are not well-suited for short-term (hours to few days), high-frequency monitoringDrone autopilots are cheap and provide high-frequency (>1 Hz) and real-time information about iceberg drift and orientationDrone autopilots and ground control software can be easily adapted to studies of iceberg-ocean interactions and operational iceberg management

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Iceberg and sea ice drift tracking and analysis off north-east Greenland

Cited by 20 publications

References 25 publications

The life cycle of small- to medium-sized icebergs in the Amundsen Sea Embayment

The life cycle of small- to medium-sized icebergs in the Amundsen Sea Embayment

Sea Ice Management for Oil and Gas Platforms in the Bohai Sea

Adapting open-source drone autopilots for real-time iceberg observations

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