M. L. Litvak, I. G. Mitrofanov, M. V. Djachkova, D. I. Lisov, S. Y. Nikiforov, C. Hardgrove, A. A. Fraeman, B. Hallet, A. R. Vasavada
{"title":"好奇号火星车上的DAN仪器测量的火星盖尔陨石坑含硫酸盐单元的地下水分布","authors":"M. L. Litvak, I. G. Mitrofanov, M. V. Djachkova, D. I. Lisov, S. Y. Nikiforov, C. Hardgrove, A. A. Fraeman, B. Hallet, A. R. Vasavada","doi":"10.1029/2025JE009089","DOIUrl":null,"url":null,"abstract":"<p>The Dynamic Albedo of Neutrons (DAN) instrument onboard the Curiosity rover has been used to study subsurface water distribution in the Canaima drill site region, where polyhydrated Mg sulfate (starkeyite) was identified in Martian soil for the first time. Multiple DAN measurements acquired in this local sulfate rich area (SRA) have shown unusually high concentrations of subsurface water. The distribution of subsurface water, likely bound in sulfate minerals, is heterogeneous both laterally and with depth. 60% of the surface area around the drill site can be characterized by a layered structure, with a more hydrated, sulfate rich layer (10–30 cm) above the material that is relatively dry. These straightforward calculations suggest that the total number of Mg-sulfates in this 220 × 250 m area could be as high as 2,600 metric tons.</p>","PeriodicalId":16101,"journal":{"name":"Journal of Geophysical Research: Planets","volume":"130 9","pages":""},"PeriodicalIF":4.0000,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Distribution of Subsurface Water in the Sulfate-Bearing Unit at Gale Crater, Mars, as Measured by the DAN Instrument on the Curiosity Rover\",\"authors\":\"M. L. Litvak, I. G. Mitrofanov, M. V. Djachkova, D. I. Lisov, S. Y. Nikiforov, C. Hardgrove, A. A. Fraeman, B. Hallet, A. R. Vasavada\",\"doi\":\"10.1029/2025JE009089\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The Dynamic Albedo of Neutrons (DAN) instrument onboard the Curiosity rover has been used to study subsurface water distribution in the Canaima drill site region, where polyhydrated Mg sulfate (starkeyite) was identified in Martian soil for the first time. Multiple DAN measurements acquired in this local sulfate rich area (SRA) have shown unusually high concentrations of subsurface water. The distribution of subsurface water, likely bound in sulfate minerals, is heterogeneous both laterally and with depth. 60% of the surface area around the drill site can be characterized by a layered structure, with a more hydrated, sulfate rich layer (10–30 cm) above the material that is relatively dry. These straightforward calculations suggest that the total number of Mg-sulfates in this 220 × 250 m area could be as high as 2,600 metric tons.</p>\",\"PeriodicalId\":16101,\"journal\":{\"name\":\"Journal of Geophysical Research: Planets\",\"volume\":\"130 9\",\"pages\":\"\"},\"PeriodicalIF\":4.0000,\"publicationDate\":\"2025-09-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Geophysical Research: Planets\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025JE009089\",\"RegionNum\":1,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"GEOCHEMISTRY & GEOPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Geophysical Research: Planets","FirstCategoryId":"89","ListUrlMain":"https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025JE009089","RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
Distribution of Subsurface Water in the Sulfate-Bearing Unit at Gale Crater, Mars, as Measured by the DAN Instrument on the Curiosity Rover
The Dynamic Albedo of Neutrons (DAN) instrument onboard the Curiosity rover has been used to study subsurface water distribution in the Canaima drill site region, where polyhydrated Mg sulfate (starkeyite) was identified in Martian soil for the first time. Multiple DAN measurements acquired in this local sulfate rich area (SRA) have shown unusually high concentrations of subsurface water. The distribution of subsurface water, likely bound in sulfate minerals, is heterogeneous both laterally and with depth. 60% of the surface area around the drill site can be characterized by a layered structure, with a more hydrated, sulfate rich layer (10–30 cm) above the material that is relatively dry. These straightforward calculations suggest that the total number of Mg-sulfates in this 220 × 250 m area could be as high as 2,600 metric tons.
期刊介绍：
The Journal of Geophysical Research Planets is dedicated to the publication of new and original research in the broad field of planetary science. Manuscripts concerning planetary geology, geophysics, geochemistry, atmospheres, and dynamics are appropriate for the journal when they increase knowledge about the processes that affect Solar System objects. Manuscripts concerning other planetary systems, exoplanets or Earth are welcome when presented in a comparative planetology perspective. Studies in the field of astrobiology will be considered when they have immediate consequences for the interpretation of planetary data. JGR: Planets does not publish manuscripts that deal with future missions and instrumentation, nor those that are primarily of an engineering interest. Instrument, calibration or data processing papers may be appropriate for the journal, but only when accompanied by scientific analysis and interpretation that increases understanding of the studied object. A manuscript that describes a new method or technique would be acceptable for JGR: Planets if it contained new and relevant scientific results obtained using the method. Review articles are generally not appropriate for JGR: Planets, but they may be considered if they form an integral part of a special issue.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
