See also our paper discussing this Glacier geoengineering to address sea-level rise: A geotechnical approach Author links open overlay panelAndrewLockleyaMichaelWolovickbBowieKeefercRupertGladstonedLi-YunZhaobeJohn C.Moorebd a University College London (Bartlett School), London, WC1H 0QB, UK b College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, PR China c 120 Manastee Road, Galiano Island, British Columbia, BC V0N 1P0, Canada d Arctic Centre, University of Lapland, Rovaniemi, 96101, Finland e Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, 519082, China Received 15 January 2020, Revised 3 August 2020, Accepted 27 November 2020, Available online 5 December 2020, Version of Record 1 February 2021.
crossmark-logo https://doi.org/10.1016/j.accre.2020.11.008 Get rights and content Under a Creative Commons licenseOpen access Abstract It is remarkable that the high-end sea level rise threat over the next few hundred years comes almost entirely from only a handful of ice streams and large glaciers. These occupy a few percent of ice sheets’ coastline. Accordingly, spatially limited interventions at source may provide globally-equitable mitigation from rising seas. Ice streams control draining of ice sheets; glacier retreat or acceleration serves to greatly increase potential sea level rise. While various climatic geoengineering approaches have been considered, serious consideration of geotechnical approaches has been limited – particularly regarding glaciers. This study summarises novel and extant geotechnical techniques for glacier restraint, identifying candidates for further research. These include draining or freezing the bed; altering surface albedo; creating obstacles: retaining snow; stiffening shear margins with ice; blocking warm sea water entry; thickening ice shelves (increasing buttressing, and strengthening fractured shelves against disintegration); as well as using regional climate engineering or local cloud seeding to cool the glacier or add snow. Not all of these ideas are judged reasonable or feasible, and even fewer are likely to be found to be advisable after further consideration. By describing and evaluating the potential and risks of a large menu of responses – even apparently hopeless ones – we can increase the chances of finding one that works in times of need On Sat, 18 Jun 2022, 12:32 SALTER Stephen, <[email protected]> wrote: > Hi All > > I can see that this would reduce melting in summer but what does it do > about refreezing in winter? They mention only 24 June to 28 August. It > would be a pain to have to lay cleaned material again every year. We want > to do more that just a ski slope. > > (I hate strangling babies). > > Stephen > > > > *From:* [email protected] < > [email protected]> *On Behalf Of *Renaud > de RICHTER > *Sent:* Saturday, June 18, 2022 11:30 AM > *To:* geoengineering <[email protected]>; > healthy-planet-action-coalition < > [email protected]>; John Nissen < > [email protected]> > *Subject:* Researchers explore new method for glacial melt reduction > > > > *This email was sent to you by someone outside the University.* > > You should only click on links or attachments if you are certain that the > email is genuine and the content is safe. > > phys.org /news/2022-06-explore-method-glacial-reduction.html > <https://phys.org/news/2022-06-explore-method-glacial-reduction.html> > Researchers explore new method for glacial melt reduction > ------------------------------ > > [image: Image removed by sender.] > > June 17, 2022 > > by Chinese Academy of Sciences <https://english.cas.cn/> > > Ortho-mosaic on 28 August 2021 (left panel), hillshade generated from the > DEM on 28 August 2021 (middle panel), and changes in elevation between 24 > June and 28 August 2021 (right panel). Glacier ablation was monitored using > ablation stakes (S1–S3). Credit: Wang Feiteng > > Glaciers are experiencing fast and significant changes under global > warming. Glacier shrinkage significantly impacts global sea level, regional > water cycles, ecosystems, and natural hazards. > > Many studies have considered glacier changes and the mechanisms driving > such changes. However, few studies have focused on mitigating glacier > ablation. > > Recently, a research team from the Northwest Institute of Eco-Environment > and Resources of the Chinese Academy of Sciences conducted the evaluation > of glacier cover efficiency for melt reduction on the Urumqi Glacier No. 1, > Tien Shan, China. > > Their results were published in *Remote Sensing*. > > By combining two high-resolution digital elevation models derived from > terrestrial laser scanning and unmanned aerial vehicles, albedo, and > meteorological > data <https://phys.org/tags/meteorological+data/>, the researchers > quantified the glacier ablation mitigation under three different cover > materials. > > The results showed that material-covered areas could slow down glacier > melting by approximately 29–56% compared with uncovered areas. The > researchers also found that the nanofiber material showed higher efficiency > (56%) than the geotextiles used in the experiment. > > The method of artificial reduction of glacial ice melt provides a > scientific and practical basis for decision-making on mitigating and > adapting to climate change. > ------------------------------ > > *More information:* Shuangshuang Liu et al, Quantifying the Artificial > Reduction of Glacial Ice Melt in a Mountain Glacier (Urumqi Glacier No. 1, > Tien Shan, China), *Remote Sensing* (2022). DOI: 10.3390/rs14122802 > <https://dx.doi.org/10.3390/rs14122802> > > Provided by Chinese Academy of Sciences > <https://phys.org/partners/chinese-academy-of-sciences/> > > -- > You received this message because you are subscribed to the Google Groups > "Healthy Planet Action Coalition" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/healthy-planet-action-coalition/CAHodn99w%2B9yoWS9M6Lu00JRv53Ot_9iD5i_k2JTXLvOg%3DGZ4Mg%40mail.gmail.com > <https://groups.google.com/d/msgid/healthy-planet-action-coalition/CAHodn99w%2B9yoWS9M6Lu00JRv53Ot_9iD5i_k2JTXLvOg%3DGZ4Mg%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > The University of Edinburgh is a charitable body, registered in Scotland, > with registration number SC005336. Is e buidheann carthannais a th’ ann an > Oilthigh Dhùn Èideann, clàraichte an Alba, àireamh clàraidh SC005336. > > -- > You received this message because you are subscribed to the Google Groups > "geoengineering" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/geoengineering/DB7PR05MB5692C9FEECB3692032FDB61DA7AE9%40DB7PR05MB5692.eurprd05.prod.outlook.com > <https://groups.google.com/d/msgid/geoengineering/DB7PR05MB5692C9FEECB3692032FDB61DA7AE9%40DB7PR05MB5692.eurprd05.prod.outlook.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. 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