🔎 𝗪𝗵𝗮𝘁 𝗮𝗿𝗲 𝘁𝗵𝗲 𝗘𝗮𝗿𝘁𝗵'𝘀 𝗮𝘃𝗲𝗿𝗮𝗴𝗲 𝗽𝗵𝘆𝘀𝗶𝗰𝗮𝗹 𝗽𝗿𝗼𝗽𝗲𝗿𝘁𝗶𝗲𝘀 (𝗲.𝗴. 𝗱𝗲𝗻𝘀𝗶𝘁𝘆, 𝘀𝗵𝗲𝗮𝗿/𝗯𝘂𝗹𝗸 𝗮𝘁𝘁𝗲𝗻𝘂𝗮𝘁𝗶𝗼𝗻, 𝘃𝗲𝗹𝗼𝗰𝗶𝘁𝘆, 𝗮𝗻𝗶𝘀𝗼𝘁𝗿𝗼𝗽𝘆)?
🔎 𝗖𝗮𝗻 𝗮𝘀𝘁𝗿𝗼𝗻𝗼𝗺𝗶𝗰-𝗴𝗲𝗼𝗱𝗲𝘁𝗶𝗰 𝗮𝗻𝗱 𝗳𝘂𝗹𝗹-𝘀𝗽𝗲𝗰𝘁𝗿𝘂𝗺 𝘀𝗲𝗶𝘀𝗺𝗼𝗹𝗼𝗴𝗶𝗰𝗮𝗹 𝗱𝗮𝘁𝗮 (~𝟭-𝟯𝟮𝟬𝟬 𝘀𝗲𝗰𝗼𝗻𝗱𝘀) 𝗯𝗲 𝗿𝗲𝗰𝗼𝗻𝗰𝗶𝗹𝗲𝗱?
🔎 𝗛𝗼𝘄 𝗰𝗮𝗻 𝘀𝘁𝗿𝗼𝗻𝗴 𝗹𝗮𝘁𝗲𝗿𝗮𝗹 𝘃𝗮𝗿𝗶𝗮𝘁𝗶𝗼𝗻𝘀 (𝗲.𝗴. 𝗰𝗿𝘂𝘀𝘁) 𝗯𝗲 𝗮𝗰𝗰𝗼𝘂𝗻𝘁𝗲𝗱 𝗳𝗼𝗿 (𝗶.𝗲. 𝘁𝗵𝗲𝗼𝗿𝘆, 𝗼𝗯𝘀𝗲𝗿𝘃𝗮𝘁𝗶𝗼𝗻𝘀) 𝗶𝗻 𝗿𝗮𝗱𝗶𝗮𝗹 𝗺𝗼𝗱𝗲𝗹𝘀?
🔎 𝗪𝗵𝗮𝘁 𝗰𝗮𝗻 𝘄𝗲 𝗿𝗼𝗯𝘂𝘀𝘁𝗹𝘆 𝗶𝗻𝘁𝗲𝗿𝗽𝗿𝗲𝘁 𝗮𝗯𝗼𝘂𝘁 𝘁𝗵𝗲 𝗘𝗮𝗿𝘁𝗵'𝘀 𝗶𝗻𝘁𝗲𝗿𝗶𝗼𝗿 𝗯𝗮𝘀𝗲𝗱 𝗼𝗻 𝗶𝘁𝘀 𝗿𝗮𝗱𝗶𝗮𝗹 𝗳𝗲𝗮𝘁𝘂𝗿𝗲𝘀?
• 𝘐𝘴 𝘵𝘩𝘦 𝘰𝘶𝘵𝘦𝘳 𝘤𝘰𝘳𝘦 𝘸𝘦𝘭𝘭 𝘮𝘪𝘹𝘦𝘥 𝘢𝘯𝘥 𝘶𝘯𝘥𝘦𝘳𝘨𝘰𝘪𝘯𝘨 𝘢𝘥𝘪𝘢𝘣𝘢𝘵𝘪𝘤 𝘤𝘰𝘮𝘱𝘳𝘦𝘴𝘴𝘪𝘰𝘯?
• 𝘊𝘢𝘯 𝘴𝘱𝘪𝘯 𝘵𝘳𝘢𝘯𝘴𝘪𝘵𝘪𝘰𝘯𝘴 𝘪𝘯 𝘪𝘳𝘰𝘯-𝘣𝘦𝘢𝘳𝘪𝘯𝘨 𝘮𝘪𝘯𝘦𝘳𝘢𝘭𝘴 𝘣𝘦 𝘥𝘦𝘵𝘦𝘤𝘵𝘦𝘥 𝘪𝘯 𝘵𝘩𝘦 𝘭𝘰𝘸𝘦𝘳 𝘮𝘢𝘯𝘵𝘭𝘦?
• 𝘞𝘩𝘢𝘵 𝘪𝘴 𝘵𝘩𝘦 𝘣𝘶𝘭𝘬 𝘤𝘰𝘮𝘱𝘰𝘴𝘪𝘵𝘪𝘰𝘯 𝘰𝘧 𝘥𝘪𝘧𝘧𝘦𝘳𝘦𝘯𝘵 𝘳𝘦𝘨𝘪𝘰𝘯𝘴? 𝘐𝘴 𝘪𝘵 𝘱𝘺𝘳𝘰𝘭𝘪𝘵𝘪𝘤 𝘦𝘷𝘦𝘳𝘺𝘸𝘩𝘦𝘳𝘦?
• 𝘐𝘴 𝘵𝘩𝘦𝘳𝘦 𝘢 𝘱𝘦𝘳𝘷𝘢𝘴𝘪𝘷𝘦 𝘵𝘩𝘦𝘳𝘮𝘰-𝘤𝘩𝘦𝘮𝘪𝘤𝘢𝘭 𝘣𝘰𝘶𝘯𝘥𝘢𝘳𝘺 𝘭𝘢𝘺𝘦𝘳 𝘢𝘵𝘰𝘱 𝘵𝘩𝘦 𝘤𝘰𝘳𝘦-𝘮𝘢𝘯𝘵𝘭𝘦 𝘣𝘰𝘶𝘯𝘥𝘢𝘳𝘺?
• 𝘞𝘩𝘢𝘵 𝘪𝘴 𝘵𝘩𝘦 𝘳𝘢𝘥𝘪𝘢𝘭 𝘦𝘹𝘵𝘦𝘯𝘵 𝘢𝘯𝘥 𝘰𝘳𝘪𝘨𝘪𝘯 𝘰𝘧 𝘭𝘢𝘳𝘨𝘦-𝘴𝘤𝘢𝘭𝘦 𝘢𝘯𝘪𝘴𝘰𝘵𝘳𝘰𝘱𝘺 𝘪𝘯 𝘵𝘩𝘦 𝘮𝘢𝘯𝘵𝘭𝘦?
• 𝘞𝘩𝘦𝘳𝘦 𝘥𝘰𝘦𝘴 𝘵𝘩𝘦 𝘮𝘰𝘴𝘵 𝘦𝘯𝘦𝘳𝘨𝘺 𝘥𝘪𝘴𝘴𝘪𝘱𝘢𝘵𝘪𝘰𝘯 𝘰𝘤𝘤𝘶𝘳 𝘢𝘯𝘥 𝘸𝘩𝘢𝘵 𝘪𝘴 𝘪𝘵𝘴 𝘥𝘰𝘮𝘪𝘯𝘢𝘯𝘵 𝘮𝘦𝘤𝘩𝘢𝘯𝘪𝘴𝘮?
The spherically-averaged profiles of elasticity, density, and attenuation reflect the bulk composition, temperature profile, and dominant processes of the Earth's heterogeneous interior. The two exhaustive papers below describe the new radial (one-dimensional) reference Earth model (REM1D), which serves as the update to the preliminary reference Earth model (PREM; Dziewonski and Anderson, 𝘗𝘩𝘺𝘴. 𝘌𝘢𝘳𝘵𝘩 𝘗𝘭𝘢𝘯𝘦𝘵. 𝘐𝘯𝘵𝘦𝘳., 1981). Paper I describes new modeling concepts and reference datasets while features of REM1D and geological interpretations are discussed in Paper II. We extend the Full Spectrum Tomography (FST) technique, which is necessary for constructing reference models that account for lateral heterogeneity and geographic bias in diverse data. Visit this link to access the resources from this study.
📬 Project Website: rem3d.org
🗄️ Data Products: Zenodo
🗞️ References:
1️⃣ Radial structure of the Earth: (I) Model concepts and data (2025), 𝘗𝘩𝘺𝘴. 𝘌𝘢𝘳𝘵𝘩 𝘗𝘭𝘢𝘯𝘦𝘵. 𝘐𝘯𝘵𝘦𝘳., 361, doi:10.1016/j.pepi.2025.107319 Online article. Download pdf. Download supplement.
2️⃣ Radial structure of the Earth: (II) Model features and interpretations (2025), 𝘗𝘩𝘺𝘴. 𝘌𝘢𝘳𝘵𝘩 𝘗𝘭𝘢𝘯𝘦𝘵. 𝘐𝘯𝘵𝘦𝘳., 361, doi:10.1016/j.pepi.2025.107320 Online article. Download pdf. Download supplement.