Ϥ����A�K���"{�v���f�(�������7��[ƿ�wm3�Pv2��^�"�7A Meiofauna in Antarctic sea ice - pack ice vs. fast ice Julia Ehrlich1,2, Stephan Wietkamp1, Giulia Castellani2, Fokje L. Schaafsma4, Marina Monti3, Katja Metfies2, Hauke Flores2 1Universität Hamburg, Germany 2Alfred-Wegener-lnstitute, Germany 3Istituto Nazionale Di Oceanografia e Geofisica Sperimentale, Italy 4Institute for Marine Resources and Ecosystem Studies, The Netherlands Webpage: … stream endobj �rv��y|Q^z�/�� _� g?�U�_�$罝��^�(QZ�z���9�]���We�U������m�j�+��~��y��_����g��8����{��H�r�l���BƓ }��{Y�{�)���t����H���Oy6����J��/�W�>�A(Bq�����ͧ���څ��%���'��Rƿk~������" ^�����`���JA��Q����EQ��g�e?+IG��~"TJτ�U������?����U��v���v�-/����^���EH�����ru�]�y{��R�C� OF��u!�!RMx��^H=o/jޮ�-z Q��2Tږ�~*�e%����^��Q���f? �]w���ӏ���l����@��vw����7q���L�ft�����z5��f}֮v���⥌�|�b.$z! As a result, landfast ice does not drift with currents and wind. ScienceDirect ® is a registered trademark of Elsevier B.V.Iron fractionation in pack and fast ice in East Antarctica: Temporal decoupling between the release of dissolved and particulate iron during spring meltCopyright © 2010 Elsevier Ltd. All rights reserved.ScienceDirect ® is a registered trademark of Elsevier B.V.
Fast ice can be useful for navigation, if the properties of a particular deposit of fast ice are well known.
%PDF-1.5 May be formed in situ from sea water or by pack ice freezing to the shore, and may extend a few meters or several hundred km from the coast. In Antarctica, fast ice may also extend between grounded ice burgers. <> By continuing you agree to the Copyright © 2020 Elsevier B.V. or its licensors or contributors. Preferential release of dissolved iron (and not particulate iron) into brines at all sites sampled with the sack hole method (and therefore indicative of brine drainage) indicates the diffuse nature of the dissolved fraction. <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 2401.2 3390.6] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Sampling was from within the 110–130°E sector of Antarctica.
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ice that is anchored to the shore or ocean bottom, typically over shallow ocean shelves at continental margins; fast ice is defined by the fact that it does not move with the winds or currents. You can keep the ice's core temperature lower by insulating it.
[�����ξ_�0߬���;ɨ� Sea ice, which covers ∼80% of the Southern Ocean (south of 60°S) during maximum extent, can concentrate iron up to two orders of magnitude higher than in the underlying sea water.
This study is the first to document iron fractionation and concentration in both pack and fast ice during a single research study.
Note: This is land fast ice. Fast ice: Sea Ice that is anchored to the shore, ocean bottom, an ice wall, an ice front, or between shoals or grounded icebergs.
1 0 obj endobj 7Wf1R��^Q:��X���K.�qzؖ�,AK��Fw��tA�"�)KU�ʚ����U�B(X_�J�J���!�73��C Pack a variety of substances around it, such as dry ice… Fast ice also usually cracks away from the land in the summer months, creating ice floes and turning into drift ice. We observed markedly higher concentrations of particulate iron at our fast-ice site (0.96–214 nM) relative to several pack-ice sites (0.87–77.7 nM).
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