火星極區凝結與昇華的季節性型態與Cryptic region

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簡正忠(Jeng-Jong Jian) 查詢紙本館藏

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論文名稱

火星極區凝結與昇華的季節性型態與Cryptic region
(Seasonal Patterns of Condensation and Sublimation Cycles in Martian Polar Caps and the Cryptic Region)

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摘要(中)

摘要
火星南北極冰冠對大氣結構與動力上扮演重要的角色。經由火星冰冠的昇華與凝結有效的成為全球氣候的指標。極區包含季節性乾冰，此冰層在冬季會延伸到中緯度，而在夏季永久冰層會持續存在於極區中。在北半球的永久冰層主要是由水冰所組成，在南半球則是由乾冰與水冰共同組成。南半球的永久冰冠形狀是不對稱的，在永久冰冠的對面存在一種非常特殊的地形名為「Cryptic Region」。這種地形的特徵是低反照率與低溫，而且只發生在火星南半球。許多公里尺度的扇形(fans)結構顯然是由於氣體噴流從未完全昇華的冰層中噴出，再加上風的作用所造成的。在南半球從Ls＝180度開始，季節性的冰層開始消融，扇形與蜘蛛形(spider)結構依序出現，而且這些地形特徵幾乎每年都會出現在相同的區域中。
火星雷射測高儀(MOLA)是火星全球測量者號(MOC)其中的一個探測儀器，提供地形測量、地面光滑度以及冰層的高度變化更精細的觀測。使用火星雷射測高儀收集超過一整個火星年的資料(1999-2001)，利用這些資料來探測冰層的高度變化以及二氧化碳在南北半球極區季節性演化。在北半球極區，最大的高度變化發生在Ls =330度，變化值是1.09公尺，在南半球則是發生在Ls= 150度，高度變化是0.78公尺。
我們計算出四維(三維空間加上時間)的季節性乾冰厚度變化以及cryptic 區域與非cryptic 區域凝結與昇華隨著季節的差異。結果顯示這兩個區域的乾冰高度變化隨著時間是相當類似的。最大的乾冰高度變化在這兩個區域大約是0.76-0.78 公尺，發生的時間是在Ls=150度。
在這份研究中我們使用火星軌道相機(MOC)窄視野影像來做扇形及蜘蛛形地形的時間分布與地形關係分布的系統研究。我們發現大部分的扇形特徵分布在春天早期，Ls 小於230度，扇形與蜘蛛形地形會共同發生於Ls=250± 20度的時間內。同時這些特殊地形顯然與緯度及高度有很密切的關係，例如大部分發生於緯度83度以南，高度2500公尺以上。統計結果也指出扇形特徵的出現與乾冰厚度有密切的關係，這也支持了排氣模式(Venting Model)的說法。

摘要(英)

Abstract
The polar caps of Mars play an important role on the atmospheric structure and dynamics of this volatile-rich planet. The processes of sublimation-condensation of Martian polar caps can be a sensitive indicator of global weather. The polar regions include seasonal CO2 frost caps which will stretch to mid latitudes in winter and residual frost deposits close to the pole which will remain also in the summer. The permanent ice cap on the northern cap is composed of water ice and the southern cap includes both carbon dioxide ice and water ice. The South Pole of Mars is characterized by an asymmetric residual ice cap. On the opposite side of the south residual cap, there exists a distinctive terrain named Cryptic Region which is characterized by regions of low albedo and low temperature has been identified on the Martian south polar cap. Many fan-shaped km-scale structures apparently caused by a wind-blown system of dust-laden gas jets occurred dozens degrees of Ls before the complete sublimation of the CO2 frost layer. During the warming period starting at Ls~180o in the south hemisphere, the seasonal ice cap regresses and fans and spiders appear subsequently. These surface features are repeatable events that tend to occupy the same areas from year to year.
The Mars Orbital Laser Altimeter (MOLA), an instrument on the Mars Global Surveyor（MGS）, provided detailed mapping of the topography, surface roughness and the height of volatile deposits. Using the MOLA topography data collected over one Martian year (1999-2001), we have studied the temporal elevation change and the seasonal cycle of the carbon dioxide frost on the northern and southern polar caps. In the north polar cap, the maximum elevation changes occurred at Ls=3300 and the value was 1.09 m and about 0.78 m at the opposite Ls=1500 in the south.
. We have produced four-dimensional (3D plus time) mappings of the seasonal CO2 frost thickness variation and examined the seasonal cycles of condensation and sublimation in the cryptic and non-cryptic regions. It is found that the time variations of the CO2 frost thickness in these two regions are quite similar. The greatest thickness of the CO2 frost layer is about 0.76-0.78 meter in both places and occurs at Ls=1500.
In this study, we also use the Mars Orbiter Camera (MOC) narrow angle images to produce a statistical study of the time distributions of the fans and spiders as functions of Ls and as functions of the topography. We have documented that most of the fans are found in the early spring with Ls < 230o and the fans and spiders coexist at Ls=250o ± 20o. It is also found that there is a strong dependence on latitude and altitude with fans and spiders most often observed at high latitude (>83oS) and high altitude (>2500 m). Our statistical result also indicates that the occurrence of fans is highly correlated with the thickness of the CO2 frost thus providing support for the venting model.

關鍵字(中)

★ 冰層
★ 冰冠
★ 火星

關鍵字(英)

★ Mars
★ polar cap
★ frost layer

論文目次

Contents
1. Introduction 1
1.1 Distinctive features of Mars…………………………………...............1
1.2 The significance role of Martian polar caps and elevation changes of seasonal polar caps……………………….…………….…...2
1.3 Characteristics of Cryptic region……………………………................8
1.4 The formation of Cryptic region…………………………...................14
2. Data Analysis 23
2.1 Mars Orbiter Laser Altimeter (MOLA ) Data……………...…………23
2.1.1 Crossover calculations…………………………………...……..24
2.2 Mars Orbiter Camera (MOC) Observation...........................................30
2.3 High Energy Neutron Detector (HEND) data......................................31
2.4 HRSC High-Resolution DTM data………………………………...…32
3. The evolution of north and south polar cap 40
3.1 4-Dimension (3D plus time)elevation change......................................40
3.1.1 North polar cap………………………………….……………...40
3.1.2 South polar cap…………………………………………………41
3.1.3 Fourier transform for calculating the elevation changes…...…..41
3.2 Compare with HST observations……………………………….…….42
4. Fans and Spiders 55
4.1 Time Variations of the CO2 Ice Condensation and Sublimation……..57
4.2 Spatial Distribution……………………………………………...........62
4.3 Correlation with Ls……………………………………………….…..64
4.4 The height distributions and dependence on elevation changes……...65
5. Discussion and Summary………………………………………….75
6. Future work………....................................................................................79
Bibliography

參考文獻

Aharonson,O., M. T. Zuber , D. E. Smith, G. A. Neumann, W. C. Feldman, and T. H. Prettyman, Depth ,distribution, and density of CO2 deposition on Mars, J. Geophys. Res.109, E05004, 2004.
Bibring, J-P, Y. Langevin, F. Poulet, et al., Perennial water ice identified in the south polar cap of Mars, Nature, 428, 627-630, 2004.
Cantor,B. A., M. J. Wolff, P. B. James, E. Higgs, Regression of Martian North Polar Cap: 1990-1997 Hubble Space Telescope Observations. Icarus 136,175-191, 1998.
Colaprete, A., J. R. Barnes, R. M. Haberle, M. Robert, J. L. Hollingsworth, H. H. Kieffer, and T. N. Titus, Albedo of the south pole on Mars determined by topographic forcing of atmosphere dynamics, Nature, 435, 184–188, 2005.
Farmer, C. B., P. E. Doms, Global seasonal variation of water vapor on Mars and the implications for permafrost, J. Geophys. Res., 84, 2881-2888, 1979.
Feldman, W. C., T. H. Prettyman, W.V. Boynton, et al., CO2 frost cap thickness on Mars during northern winter and spring, J. Geophys. Res.,108(E9),5103 ,2003.
Garvin, J. B., S. E. H. Sakamoto, J. J. Frawley, and C. Schnetzler ,North polar region crater forms on Mars: Geometric characteristics for the Mars Orbiter Laser Altimeter, Icarus, 144, 329–352, 2000.
Greeley, R., and J. E. Guest , Geologic map of the eastern equatorial region of Mars, U. S. Geol. Surv. Misc. Invest. Map, I-1802-B, 1987.
Haberle, R. M., J. B., Pollack, J. R., Barnes, R. W., Zurek, C. B., Leovy, J. R.,Murphy, H., Lee, and J., Schaeffer, Mars atmosphere dynamics as simulated by the NASA Ames General Circulation Model: 1. The Zonal mean circulation, J. Geophys. Res. 98, 3093-3123, 1993.
Hale A. S., Bass D. S., Tamppari L.K., Monotoring the perennial martian northern polar cap with MGS MOC., Icarus, 174,502-512, 2005.
Hess, S., L., J. A. Ryan, J. E. Tillman, R. M. Henry, and C. B. Leovy , The annual cycle of pressure on Mars measured at Viking 1 and 2. Geophy. Res.Lett., 7,192-200, 1979.
James,P. B., H. H. Kieffer, and D. A. Paige, The seasonal cycle of carbon dioxide on Mars, edited by H. H.,Kieffer et al.,pp.934-968,Univ. of Ariz. Press, Tucson , 1992.
James, P. B., J. F. Bell III,R. T. Clancy, S. W. Lee, L. J. Martin, and M. J. Wolff , Hubble Space Telescope synoptic imaging of Mars:1995 opposition observations. J. Geophys. Res. 101, 18883-18890, 1996.
James, P. B., B. A. Cantor and S. Davis , Mars Orbiter Camera observations of the Martian south polar cap in 1999 – 2000, J. Geophys. Res., 106, 23635 – 23652, 2001.
Jian, J. J., Ip, W. H., Seasonal Patterns of Condensation and Sublimation Cycles in the Cryptic and Non-Cryptic Regions of the South Pole., Advances in Space Research, 43,138-142, 2009a.
Jian, J. J., Ip, W. H., S.R. Sheu, Spatial distributions and seasonal variations of features related to a venting process at high southern latitudes observed by the MOC camera. Planetary and Space Science, 57,797-803, 2009b.
Kieffer, H., S. Chase, E. Miner, F. Palluconi, G. Neugebauer, and T. Martin, Infrared thermal mapping of the martian surface and atmosphere: First results, Science 193, 780-786, 1976.
Kieffer, H., Mars south polar spring and summer temperatures: A residual CO2 frost, J. Geophys. Res., 84, 8263-8288, 1979.
Kieffer, H. H., Titus, T. N., Mullins, K. F. & Christensen, P. R. Mars south polar spring and summer behaviour observed by TES: Seasonal cap evolution controlled by frost grain size. J. Geophys. Res., 105, 9653–9700, 2000a.
Kieffer, H. H., Annual punctuated CO2 slab-ice and jets on Mars, paper presented at 2nd International Conference on Mars Polar Science and Exploration, Univ. of Iceland, Reykjavik, 2000b.
Kieffer, H. H., Behavior of solid CO2 on Mars: A real zoo, paper presented at 6th International Conference on Mars, NASA, Pasadena, Calif., 20–25 July,2003.
Kieffer, H. H., Christensen, P. R. & Titus, T. N., CO2 jets formed by sublimation beneath translucent slab ice in Mars’ seasonal south polar ice cap. Nature doi:10.1038/nature04945, 2006.
Kieffer, H. H., Cold jets in the Martian polar caps, J. Geophys. Res. 112, E08005,doi:10.1029/2006JE002816, 2007 .
Kossacki, Konrad J. Markiewicz, W. J., Martian Seasonal CO2 Ice in Polygonal Troughs in Southern Polar Region: Role of the Distribution of Subsurface H2O Ice., Icarus, 160, 73-85,2002.
Langevin, Y.,Doute S.,Vincendon M.,Poulet F., Bibring, J. P., Gondet, B., Schmitt, B. & Forget, F., No signature of clear CO2 ice from the ‘cryptic’ regions in Mars’ south seasonal polar cap, Nature , 442,831-835, 2006.
Langevin, Y., J. P. Bibring, F. Montmessin, F. Forget, M. Vincendon, S. Doute, F. Poulet and B. Gondet, Observations of the south seasonal cap of Mars during recession in 2004-2006 by the OMEGA visible/near-infrared imaging spectrometer on board Mars Express, J. Geophys. Res., 112, Issue E08S12, 2007.
Leighton R. B., N. H. Horowitz, B. C. Murray, R. P. Sharp, A. H. Herriman, A. T. Young, B. A. Smith, M. E. Davies, and C. B. Leovy, Mariner 6 and 7 Television Pictures: Preliminary Analysis., Science 3 166: 49-67, 1969.
Litvak, M.L., I. G. Mitroffanov, A. S. Kozyrev, et al. , 4-D model of CO2 deposition at north and south of Mars from HEND/ODYSSEY and MOLA/MGS, Proceed. Sixth Intn’l Conf. On Mars, 2003.
Lucchitta, B.K., Small-scale polygons on Mars, Washington Rept. of Planetary Geol. Programs, 205-208, 1984.
Malin, M. C., et al., Early views of the Martian surface from the Mars Orbiter Camera of Mars Global Surveyor, Science, 279, 1681 –1685,1998.
Malin, M. C., Michael A. Caplinger, Scott D. Davis, Observational Evidence for an Active Surface Reservoir of Solid Carbon Dioxide on Mars , Science, 294,2146-2148,2001.
Mangold, N. Maurice, S. Feldman, W. C. Costard, F. Forget, F., Spatial relationships between patterned ground and ground ice detected by the Neutron Spectrometer on Mars., J. Geophys. Res.,109, E8, CiteID E08001 ,2004.
Mellon, Michael T., Small-scale polygonal features on Mars: Seasonal thermal contraction cracks in permafrost, J. Geophys. Res., 102, E11, 25617-25628,1997.
Mitrofanov, I.G., M. T. Zuber, M. L. Litvak, et al. CO2 snow depth and subsurface water-ice abundance in the northern hemisphere of Mars, Science, 300, 2081, 2003.
Neukum, G., Jaumann,R., and the HRSC Co-Investigator and Experiment Team , HRSC: the High Resolution Stereo Camera of Mars Express, ESASP,1240,1-19,2004.
Neumann,G. A., Rowland D. D., Lemoine F. G., Smith D. E., and Zuber M. T., Crossover analysis of Mars Orbiter Laser Altimeter data, J. Geophys. Res., 106, 23,753-23768, 2001.
Paige, D. A., and A. P. Ingersoll , Annual heat balance of Martian polar caps—Viking observations, Science, 228, 1160-1168, 1985.
Paige, D. A., K. Herkenhoff, and B. Murray, Mariner 9 observations of the south polar cap of Mars: Evidence for residual CO2 frost, J. Geophys. Res., 95, 1319-1335, 1990.
Paige, D. A., The Thermal stability of near-surface ground ice on Mars, Nature, 356, 43-45, 1992a.
Paige, D. A.,and S. E. Wood, Modeling the Martian seasonal CO2 cycle. 2. inter annual variability , Icarus, 99, 15-27,1992b.
Piqueux, S., Byrne, S. & Richardson, M. I. Sublimation of Mars’s southern seasonal CO2 cap and the formation of spiders. J. Geophys. Res. 108, 5084, doi:10.1029/2002JE002007, 2003.
Piqueux, S., P. R., Christensen, North and south subice gas flow and venting of the seasonal caps of Mars: A major geomorphological agent. J. Geophys. Res., 113, E06005, doi:10.1029/2007JE003009, 2008
Schofield, J. T., J. R. Barnes, D. Crisp, R. M. Haberle, S. Larsen, J. A. Magalhaes , J. R. Murphy, A. Seiff, and G. Wilson, The Mars Pathfinder Atmosphere Structure Investigation/Meteorology, Science, 278, 1752-1757, 1997.
Scott, D. H., and K. L. Tanaka , Geologic map of the western equatorial region of Mars, U.S. Geol. Surv. Misc. Invest. Map, I-1802-A., 1986.
Seibert,N.M.; Kargel,J.S., Global Distribution of Small Polygons on Mars., American Astronomical Society, DPS Meeting #33, Vol. 33, p.1104,2001.
Smith,D.E., and M. T. Zuber, The shape of Mars and the topographic signature of the hemispheric dichotomy, Science, 271, 184-188,1996.
Smith,D. E., M.T. Zuber, The relationship between MOLA northern hemisphere topography and the 6.1-Mbar atmospheric pressure of Mars, Geophys. Res. Lett., 25,4397-4400, 1998.
Smith, D. E., M. T. Zuber and G. A. Neumann, Seasonal variations of snow depth on Mars, Science, 294, 2141-2146, 2001a.
Smith, D. E. et al., Mars Orbiter Laser Altimeter: Experiment summary after the first year of global mapping of Mars. J. Geophys. Res.,106,23,689-23722,2001b.
Soderblom, L. A., M. C. Malin, J. A. Cutts, and B. C. Murry , Mariner 9 observations of the surface of Mars in the north polar region. J. Geophys. Res. 78,4197 – 4210, 1973.
Thomas, P. C., M. C. Malin, K. S. Edgett, M. H. Carr, W. K. Hartmann, A. P. Ingersollk, P. B. James, L. A. Soderblom, J. Veverka & R. Sullivan, North-south geological differences between the residual polar caps on Mars., Nature,404,161-164,2000.
Titus, T. N., Kieffer, H. H., Plaut, J. J.,Christensen, P. R., Ivanov A. B.,the THEMIS Science Team, South polar Cryptic region revisited: THEMIS observations. Third Mars Polar Science Conference, Abstract #8081 2003.
Titus, T. N., G. Cushing, A. Pathare, P. R. Christensen, S. Byrne, A. B. Ivanov, A. Ingersoll, M. Richardson, R. L. Kirk, L. A.Soderblom1, and the THEMIS Team, Intra-annual variations of the Martian swiss cheese terrain. Lunar and Planetary Science XXXV, 2004
van Gasselt, S., Reiss, D., Thorpe, A. K., Neukum, G., Seasonal variations of polygonal thermal contraction crack patterns in a south polar trough, Mars., J. Geophys. Res.,110, Issue E8, CiteID E08002,2005.
Zuber, M.T., D. E. Smith , S. C. Solomon, D. O. Muhleman, J. B. Head, et al., The Mars Observer Laser Altimeter investigation , J. Geophys. Res., 97, 7781-7797, 1992.
Zuber, M.T.,et al. ,Observation of the north polar region of Mars from the Mars Orbiter Laser Altimeter, Science,282,2053-2060, 1998.
Zuber, M.T.,et al., Internal structure and early thermal evolution of Mars from Mars Global Surveyor topography and gravity, Science, 287,1788- 1793, 2000
Zuber, M.T., D. E. Smith , Observation of the seasonal polar ice caps of Mars at 1064nm, Third Mars Polar Science Conference, 2003.

指導教授

葉永烜(Wing-Huen Ip)

審核日期

2009-6-24

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