【摘要】：作為最活躍的地貌塑造外營(yíng)力,風(fēng)力作用在火星表面塑造了各種各樣的地貌形態(tài)。對(duì)火星風(fēng)沙活動(dòng)及風(fēng)沙地貌的認(rèn)識(shí)是隨著觀測(cè)和探測(cè)技術(shù)的進(jìn)步而逐漸明確的�；鹦巧城鹪诒睒O地區(qū)連綿成帶狀分布,在其他地區(qū)分布比較零散,且主要與撞擊坑、河谷和山谷相伴分布�；鹦秋L(fēng)沙地貌與地球上相應(yīng)的地貌類型形態(tài)相似而規(guī)模更大,表明兩個(gè)星球上塑造風(fēng)沙地貌的動(dòng)力系統(tǒng)具有一定的相似性�；鹦巧城鹬饕尚鋷r質(zhì)(北極部分沙丘為石膏質(zhì))顆粒堆積而成,沉積物粒度比地球粗,主要是由中沙和粗紗組成。隨著獲取影像時(shí)空分辨率的提高和著陸器在火星近表面的觀測(cè),發(fā)現(xiàn)火星上部分區(qū)域的沙丘和沙波紋比較活躍。同地球一樣,火星風(fēng)沙地貌也可指示火星氣候的變化。
[Abstract]:As the most active geomorphologic shaping force, wind force has shaped various geomorphologic forms on the surface of Mars. The understanding of the aeolian sand activity and the aeolian geomorphology of Mars is becoming clear with the progress of observation and exploration technology. Martian dunes are distributed in arctic regions and scattered in other regions, and are mainly accompanied by impact craters, valleys and valleys. The wind sand geomorphology of Mars is similar to that of the corresponding geomorphological types on the earth and the scale is larger, which indicates that the dynamic system of wind and sand geomorphology on the two planets is similar to that on the other two planets. Mars dune is mainly composed of basaltic (arctic part of dune is gypsum) particles, sediment granularity is thicker than the earth, mainly composed of medium sand and roving. With the improvement of the spatial and temporal resolution of the images and the observation of the lander on the near surface of Mars, it is found that sand dunes and sand ripples are active in some areas of Mars. Like Earth, the Martian aeolian landform can also indicate changes in the Martian climate.
【作者單位】： 中國(guó)科學(xué)院寒區(qū)旱區(qū)環(huán)境與工程研究所沙漠與沙漠化重點(diǎn)實(shí)驗(yàn)室;太原師范學(xué)院地理科學(xué)學(xué)院;陜西師范大學(xué)旅游與環(huán)境學(xué)院;
【基金】：國(guó)家重大科學(xué)研究計(jì)劃(2013CB956000) 國(guó)家自然科學(xué)基金項(xiàng)目(41130533,41171010)
【分類號(hào)】：P185.3
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本文編號(hào)：2280877