<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">
<div class=""><strong class="" style="caret-color: rgb(101, 101, 101); color: rgb(101, 101, 101); font-family: Arial, "Helvetica Neue", Helvetica, sans-serif; font-size: 16px;">Planetary Lunch Seminar – Dr. Daniel Lalich (Cornell U.)</strong></div>
<div class="">
<p class="" style="margin: 10px 0px; padding: 0px; color: rgb(101, 101, 101); font-family: Arial, "Helvetica Neue", Helvetica, sans-serif; font-size: 16px; line-height: 16px; caret-color: rgb(101, 101, 101);">
Tuesday March 1st @ 12:30 pm to 1:30 pm | Room 54-517 and <a href="https://mit.us11.list-manage.com/track/click?u=670cb5a948f483912d2279794&id=1469cdb450&e=d9d1f94bcc" target="_blank" class="" style="color: rgb(5, 110, 158);">Zoom</a></p>
<div style="margin: 10px 0px; padding: 0px; color: rgb(101, 101, 101); font-family: Arial, "Helvetica Neue", Helvetica, sans-serif; font-size: 16px; line-height: 16px; caret-color: rgb(101, 101, 101);" class="">
<br class="">
</div>
</div>
<div class=""><strong class="" style="caret-color: rgb(101, 101, 101); color: rgb(101, 101, 101); font-family: Arial, "Helvetica Neue", Helvetica, sans-serif; font-size: 16px;">Title: </strong><span class=""><font color="#656565" face="Arial, Helvetica Neue, Helvetica, sans-serif" size="3" class=""><span style="caret-color: rgb(101, 101, 101);" class="">Bright
Radar Reflections Below the Martian South</span></font><font color="#656565" face="Arial, Helvetica Neue, Helvetica, sans-serif" class=""><font size="3" class=""> Polar Cap: Wet or Dry?</font></font></span></div>
<div class=""><strong class="" style="caret-color: rgb(101, 101, 101); color: rgb(101, 101, 101); font-family: Arial, "Helvetica Neue", Helvetica, sans-serif; font-size: 16px;"><br class="">
</strong></div>
<div class=""><strong class="" style="caret-color: rgb(101, 101, 101); color: rgb(101, 101, 101); font-family: Arial, "Helvetica Neue", Helvetica, sans-serif; font-size: 16px;">Abstract:</strong><font face="Arial" color="#656565" class=""><strong class="" style="font-size: 14px; caret-color: rgb(101, 101, 101);"> </strong><span style="font-size: 14px;" class="">The
South Polar Layered Deposit of Mars (SPLD) is a kilometers-thick formation of relatively pure water ice that takes its name from the ubiquitous layering visible in both optical imagery and radar sounding data. Recently, radar observations collected by the
MARSIS radar on board Mars Express have revealed strong reflections at the base of the deposit that were initially interpreted as evidence for liquid water. Lakes and other hydrological features are common beneath ice sheets on Earth, but until now there had
been no evidence of subglacial liquid water on present day Mars. While such a possibility is exciting, recent studies have questioned the feasibility of that interpretation. In this talk I will present the evidence both for and against a wet-based SPLD, and
describe multiple alternate interpretations for those bright reflections.</span></font></div>
<div class=""><strong class="" style="caret-color: rgb(101, 101, 101); color: rgb(101, 101, 101); font-family: Arial, "Helvetica Neue", Helvetica, sans-serif; font-size: 16px;"><br class="">
</strong></div>
<div class=""><font color="#656565" face="Arial" style="font-size: 14px;" class=""><br class="">
</font></div>
<div class=""><font color="#656565" face="Arial" style="font-size: 14px;" class="">Best regards,</font></div>
<div class=""><font color="#656565" face="Arial" style="font-size: 14px;" class="">Jason & the rest of the PLS organizing committee</font></div>
<div class=""><font color="#656565" face="Arial" style="font-size: 14px;" class=""><br class="">
</font></div>
<div class=""><font color="#656565" face="Arial" class=""><span style="font-size: 14px;" class="">Code to get into the Zoom meetings
<i class=""><b class="">Green915</b></i></span></font></div>
</div>
</body>
</html>