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There is a third movement the hypothesis covers called precession. Precession, basically is the change in the direction of earth's axis of rotation. It will take me a million years to explain even just the basics of this movement as precession is quite complex. And all these details are way beyond our scope. What's important for you to understand is these three movements, well, they are cyclical, and they work together to form, to produce complex but regular variations in earth's climate, and lead to the growth or decline of glaciers. Now, when Milankovitch first proposed this theory in the 1920s, many of his colleagues were skeptical. Milankovitch didn't have any proof. Actually there wouldn't be any evidence to support his hypothesis until the 1970s, when oceanographers were able to drill deep into the seafloor and collect samples, samples which were then analyzed by geologists. And from these samples they were able to put together a history of ocean temperatures going back hundreds of thousands of years, and this showed that earth's climate had changed pretty much the way Milankovitch's hypothesis suggested it would. So this evidence was pretty strong support for the Milankovitch Hypothesis. And by the 1980s, most people accepted this theory.
假說還包括了第三種名為“旋式推進(jìn)”運(yùn)動(dòng)。旋進(jìn)基本上是地軸旋轉(zhuǎn)方向的變化。因?yàn)樗貏e復(fù)雜，即便花費(fèi)了一個(gè)世紀(jì)我們也沒弄清楚。此外，其運(yùn)動(dòng)細(xì)節(jié)也超出了我們的知識(shí)范圍。你們特別需要了解的是，這三種運(yùn)動(dòng)都是周期性的，他們共同導(dǎo)致了復(fù)雜但有規(guī)律的地球氣候變化，并且使得冰川增長(zhǎng)或衰退。在 20 世紀(jì) 20 年代米蘭科維奇假說剛發(fā)表的時(shí)候，許多同行都持懷疑態(tài)度。 米蘭科維奇假說確實(shí)沒有任何的證據(jù)的支持。事實(shí)上，直到 20 世紀(jì) 70 年代之前，不能有任何支持它的證據(jù)，因?yàn)橹钡酱撕蠛Ｑ髮W(xué)家才能夠潛入海底鉆孔并且取樣，然后將樣本交給地質(zhì)學(xué)家分析。由此，我們能夠得出幾十萬年的關(guān)于海洋氣候的歷史狀況。這些證明了地球氣候的變化恰恰與米蘭科維假說所描述的一樣。這樣的話，這些證據(jù)很有力地證實(shí)了對(duì)米蘭科維奇假說。到了 20 世紀(jì) 80 年代，多數(shù)人接受了這一理論。
There is a third movement the hypothesis covers called precession. Precession, basically is the change in the direction of earth's axis of rotation. It will take me a million years to explain even just the basics of this movement as precession is quite complex. And all these details are way beyond our scope. What's important for you to understand is these three movements, well, they are cyclical, and they work together to form, to produce complex but regular variations in earth's climate, and lead to the growth or decline of glaciers. Now, when Milankovitch first proposed this theory in the 1920s, many of his colleagues were skeptical. Milankovitch didn't have any proof. Actually there wouldn't be any evidence to support his hypothesis until the 1970s, when oceanographers were able to drill deep into the seafloor and collect samples, samples which were then analyzed by geologists. And from these samples they were able to put together a history of ocean temperatures going back hundreds of thousands of years, and this showed that earth's climate had changed pretty much the way Milankovitch's hypothesis suggested it would. So this evidence was pretty strong support for the Milankovitch Hypothesis. And by the 1980s, most people accepted this theory.
假說還包括了第三種名為“旋式推進(jìn)”運(yùn)動(dòng)。旋進(jìn)基本上是地軸旋轉(zhuǎn)方向的變化。因?yàn)樗貏e復(fù)雜，即便花費(fèi)了一個(gè)世紀(jì)我們也沒弄清楚。此外，其運(yùn)動(dòng)細(xì)節(jié)也超出了我們的知識(shí)范圍。你們特別需要了解的是，這三種運(yùn)動(dòng)都是周期性的，他們共同導(dǎo)致了復(fù)雜但有規(guī)律的地球氣候變化，并且使得冰川增長(zhǎng)或衰退。在 20 世紀(jì) 20 年代米蘭科維奇假說剛發(fā)表的時(shí)候，許多同行都持懷疑態(tài)度。 米蘭科維奇假說確實(shí)沒有任何的證據(jù)的支持。事實(shí)上，直到 20 世紀(jì) 70 年代之前，不能有任何支持它的證據(jù)，因?yàn)橹钡酱撕蠛Ｑ髮W(xué)家才能夠潛入海底鉆孔并且取樣，然后將樣本交給地質(zhì)學(xué)家分析。由此，我們能夠得出幾十萬年的關(guān)于海洋氣候的歷史狀況。這些證明了地球氣候的變化恰恰與米蘭科維假說所描述的一樣。這樣的話，這些證據(jù)很有力地證實(shí)了對(duì)米蘭科維奇假說。到了 20 世紀(jì) 80 年代，多數(shù)人接受了這一理論。