ABSTRACT. A fo ur-m a n party representing th e Arct ic In st itu te o f North America and th e D epa rtm e n t of Geo logy, Danmouth Coll ege, went to th e "Va rd Hunt I ce S h e lf in 1960 to obtain ice cores for subsequen t labor atory anal ys is. Th e overa ll obj ec ti ve of th e proj ec t was to st ud y th e st ruc tural and stratigraphi c hi story o f the shelf and its re latio nshi p to the e nvironm ent throug h labo ra tory a na lysis of t h e cores, using stratig ra phi c, petrologic, c h em ica l, and p hysica l me thods.Th e four co res nbtain ed were logged , packed, a nd shipped to Dartmouth Co ll ege for d c tailed st ud y. Th e st ra tigraphy a nd stru ct urc of th e ice we re studied und er natura l ancl plane pola ri zed light conditi oJlS. The res ults of th is initi a l wo rk showed that the cores were co mposed o f fo ur ice types : g lacier ice, lak e ice, ·sea ice, and transition ice. Chlorinity, su lfate, a nd density p ro fil es complemented m egasco pi c studi es a nd were most useful crite ria fo r pl otting stra ti g raphi c cha nges in ice type.R es u lts of th e in vestigations thus fa r h ave yield ed new info rm a ti o n a bout the g ross structure and stratigrap h y o f the ice sh e lf an d re-cntra nt. T h ey have also show n that the ph ysical and chemica l techniqu es e mployed will be useful in futur e ice-core a na lys is. R ESUME. U ne equipe de 4 hom mes apparten a nt a 1' ''Arcti c Institute of North Ameri ca" e t au " D epa rtment of Geology, D a rlm o uth Coll ege", a travaille sur le Ward J-Iunt I ce S helf e n 1960, pour obte nir d es carottes d estin ees a d es analyses en labo ratoire. L'obj ec tif g loba l d e ce proj e t eta it d 'et udie r l'h isto ire s tructura le et stratig rap hiqu e du shelf e t sa re la ti on avec l'en vironn e ment, a l'aide d 'anal yses en laboratoire d es carot tes utilisant d es method es stra tig raphiques, petrog raphiqu es, chimiques et physiques .L es 4 ca rottes o bte nu es o nt ete reperees, empaq uetees et cx pedi ecs pa r batea u, au " Dartmout h Coll ege" , pour d es etudes detaillees. L a stra tigra phi e e t la structure de la g lace ont e te etudiees dans des co nditions d e lumi ere naturell e e t po la risee dans un p la n. Les resu ltats d e ce p remi er travail m o ntrent q ue les ca ro tt es :sont com posees d e 4 t ypes d e g lace :-g lace de glacier-g lace de lac-glace de m er-g lace d e t ransiti o n. D es profils de densite e t de teneur en c hlo re e t sui fa te, ont comple te les etud es m egascopiques e t se sont reveles d es cri teres tres util es pour tracer les c ha ngemen ts stra tig raphiqu es d e typ es de g lace.Actu ellemenr, les res ul tats d e ces rech e rches on t fOLII'ni d e nouve ll cs info rmati o ns sur la stru cture g lobale e t la st ratigra phie d e l' ice-shelf. lis ont a ussi montre que les techniqu es physiques e t chimiques utilisees sero nt utiles dans les a n a lyses futures d es caro ttes d e g lace.ZUSAMMENFASSUNG. E in e Gruppe vo n 4 Mitarbeitern des A rc ti c In stitute o f North Am...
ABSTRACT. A fo ur-m a n party representing th e Arct ic In st itu te o f North America and th e D epa rtm e n t of Geo logy, Danmouth Coll ege, went to th e "Va rd Hunt I ce S h e lf in 1960 to obtain ice cores for subsequen t labor atory anal ys is. Th e overa ll obj ec ti ve of th e proj ec t was to st ud y th e st ruc tural and stratigraphi c hi story o f the shelf and its re latio nshi p to the e nvironm ent throug h labo ra tory a na lysis of t h e cores, using stratig ra phi c, petrologic, c h em ica l, and p hysica l me thods.Th e four co res nbtain ed were logged , packed, a nd shipped to Dartmouth Co ll ege for d c tailed st ud y. Th e st ra tigraphy a nd stru ct urc of th e ice we re studied und er natura l ancl plane pola ri zed light conditi oJlS. The res ults of th is initi a l wo rk showed that the cores were co mposed o f fo ur ice types : g lacier ice, lak e ice, ·sea ice, and transition ice. Chlorinity, su lfate, a nd density p ro fil es complemented m egasco pi c studi es a nd were most useful crite ria fo r pl otting stra ti g raphi c cha nges in ice type.R es u lts of th e in vestigations thus fa r h ave yield ed new info rm a ti o n a bout the g ross structure and stratigrap h y o f the ice sh e lf an d re-cntra nt. T h ey have also show n that the ph ysical and chemica l techniqu es e mployed will be useful in futur e ice-core a na lys is. R ESUME. U ne equipe de 4 hom mes apparten a nt a 1' ''Arcti c Institute of North Ameri ca" e t au " D epa rtment of Geology, D a rlm o uth Coll ege", a travaille sur le Ward J-Iunt I ce S helf e n 1960, pour obte nir d es carottes d estin ees a d es analyses en labo ratoire. L'obj ec tif g loba l d e ce proj e t eta it d 'et udie r l'h isto ire s tructura le et stratig rap hiqu e du shelf e t sa re la ti on avec l'en vironn e ment, a l'aide d 'anal yses en laboratoire d es carot tes utilisant d es method es stra tig raphiques, petrog raphiqu es, chimiques et physiques .L es 4 ca rottes o bte nu es o nt ete reperees, empaq uetees et cx pedi ecs pa r batea u, au " Dartmout h Coll ege" , pour d es etudes detaillees. L a stra tigra phi e e t la structure de la g lace ont e te etudiees dans des co nditions d e lumi ere naturell e e t po la risee dans un p la n. Les resu ltats d e ce p remi er travail m o ntrent q ue les ca ro tt es :sont com posees d e 4 t ypes d e g lace :-g lace de glacier-g lace de lac-glace de m er-g lace d e t ransiti o n. D es profils de densite e t de teneur en c hlo re e t sui fa te, ont comple te les etud es m egascopiques e t se sont reveles d es cri teres tres util es pour tracer les c ha ngemen ts stra tig raphiqu es d e typ es de g lace.Actu ellemenr, les res ul tats d e ces rech e rches on t fOLII'ni d e nouve ll cs info rmati o ns sur la stru cture g lobale e t la st ratigra phie d e l' ice-shelf. lis ont a ussi montre que les techniqu es physiques e t chimiques utilisees sero nt utiles dans les a n a lyses futures d es caro ttes d e g lace.ZUSAMMENFASSUNG. E in e Gruppe vo n 4 Mitarbeitern des A rc ti c In stitute o f North Am...
Forecasts of sea-ice evolution in the Arctic region for several months ahead can be of considerable socio-economic value for a diverse range of marine sectors and for local community supply logistics. However, subseasonal-to-seasonal (S2S) forecasts represent a significant technical challenge, while translating user needs into scientifically manageable procedures and robust user confidence requires collaboration among a range of stakeholders. We developed and tested a novel, transdisciplinary co-production approach that combined socio-economic scenarios and participatory, research-driven simulation-gaming to test a new S2S sea-ice forecast system with experienced mariners in the cruise tourism sector. Our custom-developed computerized simulation-game ICEWISE integrated sea-ice parameters, forecast technology and human factors, as a participatory environment for stakeholder engagement. We explored the value of applications-relevant S2S sea-ice prediction and linked uncertainty information. Results suggest that the usefulness of S2S services is currently most evident in schedule-dependent sectors but expected to increase due to anticipated changes in the physical environment and continued growth in Arctic operations. Reliable communication of uncertainty information in sea-ice forecasts must be demonstrated and trialed before users gain confidence in emerging services and technologies. Mariners’ own intuition, experience, and familiarity with forecast service provider reputation impact the extent to which sea-ice information may reduce uncertainties and risks for Arctic mariners. Our insights into the performance of the combined foresight/simulation co-production model in brokering knowledge across a range of domains demonstrates promise. We conclude with an overview of the potential contributions from S2S sea-ice predictions and from experiential co-production models to the development of decision-driven and science-informed climate services.
<p>A group of scientists in a multi-national consortium have worked together to improve climate services for maritime actors in Arctic waters. The consortium under the project Enhancing the Saliency of climate services for marine mobility Sectors in European Arctic Seas (SALIENSEAS) running 2017-2020, has aimed to coproduce improved (sub)seasonal sea ice forecast and iceberg detection services. The project involved metservice experts and end users to collaboratively explore ways in which forecast services can reduce uncertainties for stakeholders.</p><p>However, direct questioning about perceived risks and uncertainties during operations do not always lend themselves well to traditional inquiries such as self-report surveys. Stakeholders can and do experience difficulty accurately recalling and rating past perceptions and connecting them to varying environmental conditions. As an alternative, experiential approaches such as participatory simulation are able to furnish a reliable environment that facilitates replication, experimenting and learning.</p><p>We present a novel approach with which to explore effects from the reliability of sub-seasonal sea ice forecasts on the user&#8217;s perception of uncertainties. Our methods combine anticipatory methods through the use of scenarios with participatory simulation in a computerized simulation/game called ICEWISE. In our paper we will:</p><ul><li>introduce the game and the newly developed seasonal sea ice forecast</li> <li>present results from a gaming workshop conducted with experts in Arctic marine operations</li> <li>discuss the role of full and structured debriefing in maximizing the learning that takes place during gaming sessions</li> </ul><p>To conclude, we reflect on the upcoming stages of data collection, which will culminate in an exploratory model. The model will serve to inform sea ice service providers about the potential mediating effects deriving from the reliability of sea ice forecasts on the user&#8217;s own perceived confidence in successful voyage planning. &#160;&#160;</p>
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