<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Harmon, Mark E.</style></author><author><style face="normal" font="default" size="100%">Leslie, D.L.</style></author><author><style face="normal" font="default" size="100%">W. Berry Lyons</style></author><author><style face="normal" font="default" size="100%">Kathleen A. Welch</style></author><author><style face="normal" font="default" size="100%">Diane M. McKnight</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Chudaev, O.</style></author><author><style face="normal" font="default" size="100%">Kharaka, Y.</style></author><author><style face="normal" font="default" size="100%">Harmon, R.S.</style></author><author><style face="normal" font="default" size="100%">Millot, R.</style></author><author><style face="normal" font="default" size="100%">Shouakar-Stash, O.</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Diurnal chemistry of two contrasting stream types, Taylor Valley, McMurdo Dry Valley Region, Antarctica</style></title><secondary-title><style face="normal" font="default" size="100%">E3S Web of Conferences</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2019</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/2019</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.e3s-conferences.org/articles/e3sconf/abs/2019/24/e3sconf_wri-162018_01020/e3sconf_wri-162018_01020.html</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">98</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Numerous ephemeral streams flow within the McMurdo Dry Valley Region of Antarctica that transport glacial meltwater to perennially ice-covered, closed-basin lakes during the austral summer. The diurnal behavior for two Taylor Valley streams of different character was examined during the summer of 2010-11. Andersen Creek is a short, 1st-order proglacial stream, whereas Von Guerard Stream is a long, high-order stream with an extensive hyporheic zone that has a substantial cyanobacterial algal mat community in its middle reaches. Both streams display strong daily cycles for temperature, electrical conductivity, dissolved oxygen, and pH. Conductivity varies in concert with flow, with solute dilution occurring during the daily high-flow pulse. Dissolved oxygen co-varies strongly with pH at Andersen Creek but not for Von Guerard Stream. Each stream has a distinct geochemical character that for Andersen Creek is a direct reflection of its glacial source, unmodified by secondary effects, whereas that for Von Guerard Stream is modulated by its resident algal mat community and through extensive hyporheic zone interaction and exchange.&lt;/p&gt;</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Leslie, D.L.</style></author><author><style face="normal" font="default" size="100%">Kathleen A. Welch</style></author><author><style face="normal" font="default" size="100%">W. Berry Lyons</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A temporal stable isotopic (δ18O, δD, d-excess) comparison in glacier meltwater streams, Taylor Valley, Antarctica</style></title><secondary-title><style face="normal" font="default" size="100%">Hydrological Processes</style></secondary-title><short-title><style face="normal" font="default" size="100%">Hydrological Processes</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2017</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/2017</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://onlinelibrary.wiley.com/doi/10.1002/hyp.11245/full</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">31</style></volume><pages><style face="normal" font="default" size="100%">3069 - 3083</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;&lt;span style=&quot;font-size: 8pt; font-family: AdvTTa9c1b374;&quot;&gt;In this paper, we describe the importance of hyporheic dynamics within Andersen Creek and Von Guerard Stream, Taylor Valley, Antarctica, from the 2010&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: &amp;quot;AdvTTa9c1b374+20&amp;quot;;&quot;&gt;&amp;ndash;&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: AdvTTa9c1b374;&quot;&gt;2011 melt season using natural tracers. Water collection started at flow onset and continued, with weekly hyporheic&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: &amp;quot;AdvTTa9c1b374+20&amp;quot;;&quot;&gt;‐&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: AdvTTa9c1b374;&quot;&gt;zone sampling. The water &lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: &amp;quot;AdvTTa9c1b374+03&amp;quot;;&quot;&gt;δ&lt;/span&gt;&lt;span style=&quot;font-size: 6pt; font-family: AdvTTa9c1b374; vertical-align: 4pt;&quot;&gt;18&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: AdvTTa9c1b374;&quot;&gt;O and &lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: &amp;quot;AdvTTa9c1b374+03&amp;quot;;&quot;&gt;δ&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: AdvTTa9c1b374;&quot;&gt;D values were isotopically lighter in the beginning and heavier later in the season. D&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: &amp;quot;AdvTTa9c1b374+20&amp;quot;;&quot;&gt;‐&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: AdvTTa9c1b374;&quot;&gt;excess measurements were used as an indicator of mixing because an evaporative signature was evident and distinguishable between 2 primary end&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: &amp;quot;AdvTTa9c1b374+20&amp;quot;;&quot;&gt;‐&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: AdvTTa9c1b374;&quot;&gt;members (glacier meltwater and hyporheic zone). Hyporheic&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: &amp;quot;AdvTTa9c1b374+20&amp;quot;;&quot;&gt;‐&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: AdvTTa9c1b374;&quot;&gt;zone influence on the channel water was variable with a strong control on streamwater chemistry, except at highest discharges. This work supports previous research indicating that Von Guerard Stream has a large, widespread hyporheic zone that varies in size with time and discharge. Andersen Creek, with a smaller hyporheic zone, displayed hyporheic&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: &amp;quot;AdvTTa9c1b374+20&amp;quot;;&quot;&gt;‐&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: AdvTTa9c1b374;&quot;&gt;zone solute interaction through the influence from subsurface hypersaline flow. Overall, the evolution of Taylor Valley hyporheic&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: &amp;quot;AdvTTa9c1b374+20&amp;quot;;&quot;&gt;‐&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: AdvTTa9c1b374;&quot;&gt;zone hydrology is described seasonally. In mid&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: &amp;quot;AdvTTa9c1b374+20&amp;quot;;&quot;&gt;‐&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: AdvTTa9c1b374;&quot;&gt;December, the hyporheic zone is a dynamic system exchanging with the glacier meltwater in the channel, and with diminishing flow in January, the hyporheic zone drains back into the channel flow also impacting stream chemistry. This work adds new information on the role of hyporheic zone&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: &amp;quot;AdvTTa9c1b374+20&amp;quot;;&quot;&gt;&amp;ndash;&lt;/span&gt;&lt;span style=&quot;font-size: 8pt; font-family: AdvTTa9c1b374;&quot;&gt;stream interaction in these glacier meltwater streams.&amp;nbsp;&lt;/span&gt;&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">17</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Leslie, D.L.</style></author><author><style face="normal" font="default" size="100%">W. Berry Lyons</style></author><author><style face="normal" font="default" size="100%">Warner, Nathaniel</style></author><author><style face="normal" font="default" size="100%">Vengosh, Avner</style></author><author><style face="normal" font="default" size="100%">Olesik, J</style></author><author><style face="normal" font="default" size="100%">Kathleen A. Welch</style></author><author><style face="normal" font="default" size="100%">Deuerling, Kelly</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Boron isotopic geochemistry of the McMurdo Dry Valley lakes, Antarctica</style></title><secondary-title><style face="normal" font="default" size="100%">Chemical Geology</style></secondary-title><short-title><style face="normal" font="default" size="100%">Chemical Geology</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2014</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2014</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://linkinghub.elsevier.com/retrieve/pii/S000925411400391Xhttp://api.elsevier.com/content/article/PII:S000925411400391X?httpAccept=text/xmlhttp://api.elsevier.com/content/article/PII:S000925411400391X?httpAccept=text/plain</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">386</style></volume><pages><style face="normal" font="default" size="100%">152 - 164</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;&amp;nbsp;&lt;/p&gt;&lt;div class=&quot;sgfNoTitleBar sgfNoGadgetBorder svDoNotLink ui-sortable&quot; id=&quot;SD_BA1P&quot; style=&quot;font-size: 16px; font-family: Arial, Helvetica, 'Lucida Sans Unicode', 'Microsoft Sans Serif', 'Segoe UI Symbol', STIXGeneral, 'Cambria Math', 'Arial Unicode MS', sans-serif; color: rgb(46, 46, 46); line-height: 23.6800003051758px;&quot;&gt;&lt;div class=&quot;containerApplOver invisible&quot; id=&quot;SD_BA1P_298231&quot; style=&quot;margin-top: 5px; padding-right: 2px; padding-left: 2px; visibility: hidden; position: absolute;&quot;&gt;&lt;div class=&quot;containerAppDetails &quot; id=&quot;maincontremote_iframe_0&quot; style=&quot;border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px; border-style: none; border-color: rgb(227, 227, 227); width: 300px; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;&quot;&gt;&amp;lt;iframe id=&amp;quot;remote_iframe_0&amp;quot; name=&amp;quot;remote_iframe_0&amp;quot; src=&amp;quot;http://sciverse-shindig.elsevier.com/gadgets/ifr?container=default&amp;amp;mid=0&amp;amp;nocache=1&amp;amp;country=ALL&amp;amp;lang=ALL&amp;amp;view=profile&amp;amp;parent=http%3A%2F%2Fwww.sciencedirect.com%2Fscience%2Farticle%2Fpii%2FS000925411400391X%3Fnp%3Dy%3A%2F%2Fwww.sciencedirect.com&amp;amp;up_SiteCatalyst=http%3A%2F%2Fcdn.els-cdn.com%2Fgadgets%2Fprod%2Fjs%2Fv3%2Fs_code_1.js&amp;amp;up_Beacon=http%3A%2F%2Fcdn.els-cdn.com%2Fgadgets%2Fprod%2Fjs%2Fv1%2Fs_beacon.js&amp;amp;up_doi=10.1016%252Fj.chemgeo.2014.08.016&amp;amp;up_gadgetId=298231&amp;amp;st=john.doe:john.doe:appid:cont:url:0:default&amp;amp;url=http%3A%2F%2Fae-content.elsevier.com%2Fsvapp%2F298231%2Fprod%2Fprivate%2Fspec.xml#rpctoken=300295446&amp;quot; &amp;quot;=&amp;quot;&amp;quot; frameborder=&amp;quot;no&amp;quot; scrolling=&amp;quot;auto&amp;quot; height=&amp;quot;&amp;quot; width=&amp;quot;100%&amp;quot; style=&amp;quot;height: 0px;&amp;quot;&amp;gt;&lt;/div&gt;&lt;/div&gt;&lt;/div&gt;&lt;div class=&quot;abstract svAbstract &quot; data-etype=&quot;ab&quot; style=&quot;font-size: 16px; font-family: Arial, Helvetica, 'Lucida Sans Unicode', 'Microsoft Sans Serif', 'Segoe UI Symbol', STIXGeneral, 'Cambria Math', 'Arial Unicode MS', sans-serif; color: rgb(46, 46, 46); line-height: 23.6800003051758px;&quot;&gt;&lt;p id=&quot;sp0005&quot; style=&quot;margin-top: 0px; margin-bottom: 9px; word-spacing: -0.15ex;&quot;&gt;The geochemistry of boron was investigated in the ice-covered lakes and glacier meltwater streams within Taylor and Wright Valley of the McMurdo Dry Valleys (MCM), Antarctica, in order to achieve a greater understanding of the source of boron to these aquatic systems and how in-lake processes control boron concentration. Selected lake depths (surface and bottom water) and streams were analyzed for boron geochemistry. Boron stable isotope values in these waters span the range of +&amp;nbsp;12.3&amp;permil; to +&amp;nbsp;51.4&amp;permil;, which corresponds to the variations from glacier meltwater streams to the hypolimnion of a highly evaporated hypersaline lake. The data demonstrate that the major sources of B to the aquatic system are via terrestrial chemical weathering of aluminosilicates within the stream channels, and a marine source, either currently being introduced by marine-derived aerosols or in the form of ancient seawater. Lakes Fryxell, Hoare, and upper waters of Lake Joyce, which experience more terrestrial influence of aluminosilicate chemical weathering via glacial meltwater streams, display a mixture of these two major sources, while the source of B in the bottom waters of Lake Joyce appears to be primarily of marine origin. Lakes Bonney and Vanda and the Blood Falls brine have a marine-like source whose δ&lt;sup style=&quot;font-size: 0.75em; line-height: 0;&quot;&gt;11&lt;/sup&gt;B values have become more positive by mineral precipitation and/or adsorption. Don Juan Pond displays a terrestrial aluminosilicate influence of a marine-like source. These hypersaline lake waters from Antarctica are similar in δ&lt;sup style=&quot;font-size: 0.75em; line-height: 0;&quot;&gt;11&lt;/sup&gt;B to other hypersaline lake waters globally, suggesting that similar processes control their B geochemistry.&lt;/p&gt;&lt;div&gt;&amp;nbsp;&lt;/div&gt;&lt;/div&gt;&lt;p&gt;&amp;nbsp;&lt;/p&gt;</style></abstract><section><style face="normal" font="default" size="100%">152</style></section></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Leslie, D.L.</style></author><author><style face="normal" font="default" size="100%">W. Berry Lyons</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">The application of stable isotopes, δ11B, δ18O, and δD, in geochemical and hydrological investigations</style></title><secondary-title><style face="normal" font="default" size="100%">Geological Sciences</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Antarctica</style></keyword><keyword><style  face="normal" font="default" size="100%">boron isotopes</style></keyword><keyword><style  face="normal" font="default" size="100%">hyporheic zone</style></keyword><keyword><style  face="normal" font="default" size="100%">McMurdo Dry Valleys</style></keyword><keyword><style  face="normal" font="default" size="100%">Ohio precipitation source</style></keyword><keyword><style  face="normal" font="default" size="100%">oxygen-18 and deuterium isotopes</style></keyword><keyword><style  face="normal" font="default" size="100%">saline lake</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2013</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%"> http://rave.ohiolink.edu/etdc/view?acc_num=osu1386000037</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">Ohio State University</style></publisher><pub-location><style face="normal" font="default" size="100%">Columbus, OH</style></pub-location><volume><style face="normal" font="default" size="100%">Ph.D.</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;My dissertation research utilizes stable isotopes as tracers of water and solute sources to study specific geochemical (solute origin) and hydrological (glacier meltwater source across a season comparing water contributions from hyporheic zone and/or glacier melt and residence time of precipitation within a managed water supply) problems within McMurdo Dry Valleys (MCM), Antarctica, and Central Ohio, USA. In Chapter II, δ11B isotopic and dissolved B measurements are used to infer the origin of B within MCM aquatic system. Boron stable isotopic values span the range of +12.3&amp;permil; to +51.4&amp;permil;, varying from glacier meltwater streams to the hypolimnion of a highly evaporated hypersaline lake. These data demonstrate that the major sources of B are chemical weathering of alumniosilicates within the stream channels, and a marine source, either currently introduced by marine-derived aerosols or from ancient seawater. In-lake processes create a more positive δ11B through adsorption or mineral precipitation. The glacier meltwater streams, Lakes Fryxell, Hoare, and upper waters of Lake Joyce display a mixture of these two sources, with Lake Joyce bottom waters primarily of marine origin. Lakes Bonney and Vanda and Blood Falls brine are interpreted as having a marine-like source changed by in-lake processes to result in a more positive δ11B, while Don Juan Pond displays a more terrestrial influence. In Chapter III, δ18O and δD are used to trace water source variation via hyporheic zone or glacier melt within two MCM streams over an entire melt season. The isotopic variation of these streams was more negative at the beginning of the season and more positive later. D-excess measurements were used to infer mixing between hyporheic storage and glacier meltwater. It was supported that Von Guerard Stream has a large, widespread hyporheic zone that changes with time and discharge amounts. The chemistry of Andersen Creek also displayed hyporheic zone influence at certain times of the year. This work adds important new information on the role of hyperheic zone-stream interactions, and supports the short term, more physically based, descriptions of hyporheic dynamics explained in the past decade. Chapter IV describes water flow and travel time within a human managed watershed-reservoir system by measuring the δ18O and δD of the precipitation source to the reservoirs and finally to the distribution system, the tap. Generally, the tap waters experienced little lag time in the managed system, having a residence time of about two months. Tap and reservoir waters preserved the precipitation signal with the reservoir morphology acting as an important control. These water supply reservoirs functioned more like a river system with a faster throughput of water and larger variations in chemical parameters. Other water supply reservoirs have a greater capacity with a larger amount of water supply usage through a more lacustrine environment, which displays more constant solute concentrations and longer flow-through times. This work provides a basic understanding of a regional water supply system in central Ohio, reservoir isotopic dynamics, and Ohio precipitation sources.&lt;/p&gt;</style></abstract><work-type><style face="normal" font="default" size="100%">doctoral</style></work-type></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">W. Berry Lyons</style></author><author><style face="normal" font="default" size="100%">Leslie, D.L.</style></author><author><style face="normal" font="default" size="100%">Harmon, R.S.</style></author><author><style face="normal" font="default" size="100%">Klaus Neumann</style></author><author><style face="normal" font="default" size="100%">Kathleen A. Welch</style></author><author><style face="normal" font="default" size="100%">Bisson, K. M.</style></author><author><style face="normal" font="default" size="100%">Diane M. McKnight</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">The carbon stable isotope biogeochemistry of streams, Taylor Valley, Antarctica</style></title><secondary-title><style face="normal" font="default" size="100%">Applied Geochemistry</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">05/2013</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">32</style></volume><pages><style face="normal" font="default" size="100%">26 - 36</style></pages><language><style face="normal" font="default" size="100%">eng</style></language></record></records></xml>