http://www.lujendraojha.com/media daily 0.75 2017-08-28 https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/1440371100075-GUHV9IRMH7GCRNW4P0PH/Pic1.png Welcome, this is Lujendra Ojha's homepage, Lujendra Ojha, NASA, Mars. Space, http://www.lujendraojha.com/welcome daily 0.75 2018-08-14 https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/1534265393191-29RRL30R4B79FEZFTMCT/HiRISE_1.png Welcome http://www.lujendraojha.com/bio daily 1.0 2022-07-14 https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/1534266123074-MFGSUO9BHH7SDZB0GB4U/HiRISE_1.png Home http://www.lujendraojha.com/indexcv daily 0.75 2024-08-27 http://www.lujendraojha.com/publications daily 0.75 2024-08-27 http://www.lujendraojha.com/research daily 0.75 2023-09-23 https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/1557790112271-JA9UIAXC5U9QDE904DNP/BU_retouched4.png Research https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/1570125186240-RXARJFOPL2FYTA455NYM/Picture1.png Research https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/1557791112874-SQJDEYV69FYZ0SA4MWM6/View_XIII.png Research https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/1621535056087-JRSC7WTM7H0FT6M8E2Y1/impact_ice.png Research - Make it stand out We have also found numerous impact craters that have excavated shallow subsurface ice in the mid-latitudes (link). https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/1621534469550-QUFNLTJWULSEP9G3KBXR/dundasice.png Research https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/1621533442687-0F1FOYU2J03X7DW9U9OE/mffcontext.png Research - Make it stand out We previously used GRS data to identify a potential source region for Martian dust. We show that a large sedimentary unit called the Medusae Fossae Formation (MFF) (shown above) has the highest abundance of S and Cl, and provides the best chemical match to surface measurements of Martian dust. Based on volume estimates of the eroded materials from the MFF, along with the enrichment of elemental S and Cl, and overall geochemical similarity, we proposed that long-term deflation of the MFF has significantly contributed to the global Martian dust reservoir (link). https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/1621533069364-CFI9V9NUAY0ANX5KD7Q3/Fig_S1_U_Th_K_abundance_compiled.png Research https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/1621536370949-J35CG47H98BM26P3INHM/stress.png Research - Heat Flow The gravity-derived density constraint of the north polar cap also allows us to estimate the stress induced by the weight of the north polar cap on the underlying lithosphere. When combined with numerical models, these constraints allow us to estimate the present-day heat flow on Mars. We recently used this approach to constrain the background heat flow in the north (link) and the south polar regions of Mars (link). https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/1621536624905-XZ9PDOLK7KZAHPURG4VZ/Schematics.png Research - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/1621535269038-1Z68A3OIA74490S9YJ2J/grav_for_website.png Research https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/4b211ac8-7d0c-4834-8bb1-801d9bd549b9/Fig4.png Research - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/1621535550081-1PJXRGFR48MJHLYLKQCY/amag.png Research - Make it stand out Contour map showing regions on Mars with significant enrichment of Th and K. The contour labels correspond to enhanced Student's t-test parameter ‘ti’ that show regions with significant enrichment of Th and K compared to the bulk-average of Mars. The background is a shaded relief of Mars’ topography and the black triangles show the location of Eridania basins. https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/1621533849583-25R2Y0E7O8JUBPXXLN4G/ViewI_altered.png Research https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/f0f2c6a4-a1f7-4b23-84b8-e15c130f16b0/lhsportrayal.jpg Research - Make it stand out Bryce Troncone’s artistic reindition of cold, icy terrestrial exoplanets orbiting M-dwarf stars. https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/3bec6bdc-8ae0-4f8a-a1f2-6734233d5778/southpole.jpeg Research - Make it stand out Credit: ESA/DLR/FU Berlin, CC BY-SA 3.0 IGO https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/1621534187367-GLMPP339SR0E65XOVZ72/habpic.png Research - Make it stand out Meltwater from the estimated Noachian surface heat flow on Mars. (A) Meltwater produced (as column equivalent from 2 km ice sheet) for surface heat flow for a 40 mW m-2 contribution from the mantle for 1 Ma (A) and 0.5 Ma (B). A Noachian Mask has been applied to exclude areas that are younger than Noachian in age. The red and black symbols show the location of hydrous minerals on Mars. (C – D) Same as A and B, but with mantle heat of 30 mW m-2. http://www.lujendraojha.com/intro-horizon daily 0.75 2016-10-24 https://images.squarespace-cdn.com/content/v1/5568a47ce4b01419d874adc1/1469322457235-LISVB2QD1Y8IT8AOXLLJ/IMG_5757.JPG Welcome, this is Lujendra Ojha's homepage, Lujendra Ojha, NASA, Mars. 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