<div dir="ltr"><div><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif">Dear Colleagues,<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif"><br></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif">We are pleased to invite you to contribute to the upcoming <b>AGU Fall Meeting 2026</b>, which will take place <b>7–11 December 2026 in San Francisco, California</b>.<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif">We are convening the session:<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><b><span style="font-family:Calibri,sans-serif">“G014 - Recent Developments on Plate-Fixed Terrestrial Reference Frames: Determination, Applications, and Challenges”</span></b><span style="font-family:Calibri,sans-serif"><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif">(Primary Section: <i>Geodesy</i>)<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif">This session aims to provide a focused forum for the geodetic community to discuss <b>advances in plate-fixed reference frames</b>, their connection to <b>global frames such as ITRF2020</b>, and their growing importance and applications for accurate and stable representation of Earth surface processes.<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif"><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><b><span style="font-family:Calibri,sans-serif">Scope and Motivation</span></b><span style="font-family:Calibri,sans-serif"><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif">Plate-fixed reference frames play a critical role in enabling the detection and quantification of <b>intraplate and plate boundary deformation</b>, offering enhanced spatial stability for a wide range of applications. These include:<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 72pt"><u></u><span style="font-size:10pt;font-family:Symbol">·<span style="font-style:normal;font-variant:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"">         </span></span><u></u><span dir="LTR"></span><span style="font-family:Calibri,sans-serif">Co- and post-seismic deformation analysis<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 72pt"><u></u><span style="font-size:10pt;font-family:Symbol">·<span style="font-style:normal;font-variant:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"">         </span></span><u></u><span dir="LTR"></span><span style="font-family:Calibri,sans-serif">Glacier and cryosphere monitoring<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 72pt"><u></u><span style="font-size:10pt;font-family:Symbol">·<span style="font-style:normal;font-variant:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"">         </span></span><u></u><span dir="LTR"></span><span style="font-family:Calibri,sans-serif">Natural and anthropogenic hazard assessment<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 72pt"><u></u><span style="font-size:10pt;font-family:Symbol">·<span style="font-style:normal;font-variant:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"">         </span></span><u></u><span dir="LTR"></span><span style="font-family:Calibri,sans-serif">Engineering and infrastructure monitoring<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 72pt"><u></u><span style="font-size:10pt;font-family:Symbol">·<span style="font-style:normal;font-variant:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"">         </span></span><u></u><span dir="LTR"></span><span style="font-family:Calibri,sans-serif">National and regional geodetic reference frame modernization<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif">With increasing attention on <b>Intra-Frame Deformation Modelling (IFDM)</b> and evolving ties to the latest ITRF realizations, this session aims to bring together diverse expertise to address both <b>methodological developments and practical challenges</b>.<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif"><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><b><span style="font-family:Calibri,sans-serif">Topics of Interest</span></b><span style="font-family:Calibri,sans-serif"><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif">We especially encourage contributions on:<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 72pt"><u></u><span style="font-size:10pt;font-family:Symbol">·<span style="font-style:normal;font-variant:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"">         </span></span><u></u><span dir="LTR"></span><span style="font-family:Calibri,sans-serif">Determination and realization of <b>national and regional plate-fixed reference frames</b><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 72pt"><u></u><span style="font-size:10pt;font-family:Symbol">·<span style="font-style:normal;font-variant:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"">         </span></span><u></u><span dir="LTR"></span><span style="font-family:Calibri,sans-serif">Integration and consistency with <b>ITRF2020 and future global frames</b><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 72pt"><u></u><span style="font-size:10pt;font-family:Symbol">·<span style="font-style:normal;font-variant:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"">         </span></span><u></u><span dir="LTR"></span><b><span style="font-family:Calibri,sans-serif">Crustal deformation modelling</span></b><span style="font-family:Calibri,sans-serif">, including IFDM approaches<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 72pt"><u></u><span style="font-size:10pt;font-family:Symbol">·<span style="font-style:normal;font-variant:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"">         </span></span><u></u><span dir="LTR"></span><span style="font-family:Calibri,sans-serif">Applications in geoscience, hazard monitoring, and engineering<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 72pt"><u></u><span style="font-size:10pt;font-family:Symbol">·<span style="font-style:normal;font-variant:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"">         </span></span><u></u><span dir="LTR"></span><span style="font-family:Calibri,sans-serif">Challenges in accuracy, stability, and long-term sustainability of reference frames<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif"><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><b><span style="font-family:Calibri,sans-serif">Why Contribute?</span></b><span style="font-family:Calibri,sans-serif"><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif">This session is intended to serve as a <b>dedicated platform within AGU</b> for advancing discussion on plate-fixed frameworks bridging <b>theoretical developments, observational techniques, and real-world applications</b>. It will bring together researchers and practitioners from academia, national agencies, and international geodetic initiatives.<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif">Your contribution would be highly valuable in helping to shape this evolving area and foster collaboration across the community.<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif"><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><b><span style="font-family:Calibri,sans-serif">Submission Information</span></b><span style="font-family:Calibri,sans-serif"><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif">Abstract submissions are now open via the AGU Fall Meeting portal:<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:"Segoe UI Emoji",sans-serif">👉</span><span style="font-family:Calibri,sans-serif"> <a href="https://agu.confex.com/agu/agu26/prelim.cgi/Session/282317" target="_blank">https://agu.confex.com/agu/agu26/prelim.cgi/Session/282317</a><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><b><span style="font-family:"Segoe UI Emoji",sans-serif">⏰</span></b><b><span style="font-family:Calibri,sans-serif"> Abstract deadline:</span></b><span style="font-family:Calibri,sans-serif">  <b>5 August 2026 23:59 EDT/03:59 +1 GMT</b><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif"><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><b><span style="font-family:Calibri,sans-serif">We Also Welcome...</span></b><span style="font-family:Calibri,sans-serif"><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 72pt"><u></u><span style="font-size:10pt;font-family:Symbol">·<span style="font-style:normal;font-variant:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"">         </span></span><u></u><span dir="LTR"></span><span style="font-family:Calibri,sans-serif">Early-stage or ongoing research<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 72pt"><u></u><span style="font-size:10pt;font-family:Symbol">·<span style="font-style:normal;font-variant:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"">         </span></span><u></u><span dir="LTR"></span><span style="font-family:Calibri,sans-serif">Contributions from emerging researchers and students<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 72pt"><u></u><span style="font-size:10pt;font-family:Symbol">·<span style="font-style:normal;font-variant:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"">         </span></span><u></u><span dir="LTR"></span><span style="font-family:Calibri,sans-serif">Coordinated submissions from collaborative projects or programs<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif"><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><b><span style="font-family:"Segoe UI Emoji",sans-serif">🤝</span></b><b><span style="font-family:Calibri,sans-serif"> Session Conveners</span></b><span style="font-family:Calibri,sans-serif"><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 72pt"><u></u><span style="font-size:10pt;font-family:Symbol">·<span style="font-style:normal;font-variant:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"">         </span></span><u></u><span dir="LTR"></span><span style="font-family:Calibri,sans-serif">Dr. Mohammad Ali Goudarzi, Canadian Geodetic Survey, Natural Resources Canada<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 72pt"><u></u><span style="font-size:10pt;font-family:Symbol">·<span style="font-style:normal;font-variant:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"">         </span></span><u></u><span dir="LTR"></span><span style="font-family:Calibri,sans-serif">Dr. Daniel Gillins, The U.S. National Geodetic Survey<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif"><u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif">We very much hope you will consider submitting an abstract and sharing your work in this session. Please feel free to share this invitation with colleagues and collaborators who may be interested. If you have any questions about the session, we would be happy to connect.<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif"> <u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif">With best regards,<u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><span style="font-family:Calibri,sans-serif"> <u></u><u></u></span></p><p class="MsoNormal" style="margin:0px 0px 0px 36pt"><b><span style="font-family:Calibri,sans-serif">Mohammad Ali Goudarzi, PhD (NRCan), and<br>Daniel Gillins, PhD (The US NGS)</span></b></p></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="font-size:12.8px"><div style="font-size:12.8px"></div></div></div></div></div></div></div></div></div></div>