the first graph is the clearer version of the second one so just ignore the seco
ID: 289355 • Letter: T
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the first graph is the clearer version of the second one so just ignore the second graph and you may finish 1st if you have time. i give you like anyway if you do that.
Date (kyr) SPECMAP d18O from Atlantic, Pacific, and Indian Ocean samples (‰) Insolation at 65°N on summer solstice (W/m2) Normalized SPECMAP d18O from Atlantic, Pacific, and Indian Ocean samples Normalized rate of change of SPECMAP d18O Normalized insolation at 65°N on summer solstice -425 -1.4523 498.84 -0.222 -1.0853 0.33835 -424 -1.5795 498.36 -0.334 -0.92527 0.31798 -423 -1.692 497.39 -0.433 -0.8158 0.27667 -422 -1.7966 496.09 -0.525 -0.75685 0.22169 -421 -1.8909 495.03 -0.608 -0.68105 0.17659 -420 -1.9716 494.35 -0.679 -0.58 0.14768 -419 -2.0409 494.36 -0.74 -0.49578 0.14796 -418 -2.1034 495.23 -0.795 -0.44526 0.18518 -417 -2.167 497.06 -0.851 -0.45368 0.26261 -416 -2.242 499.6 -0.917 -0.53789 0.37047 -415 -2.3295 502.92 -0.994 -0.63053 0.51123 -414 -2.4284 506.51 -1.081 -0.71474 0.66371 -413 -2.5341 510.04 -1.174 -0.76527 0.81338 -412 -2.6409 513.18 -1.268 -0.77369 0.94675 -411 -2.7489 515.39 -1.363 -0.78211 1.0403 -410 -2.8557 516.31 -1.457 -0.77369 1.0793 -409 -2.9602 515.75 -1.549 -0.75685 1.0556 -408 -3.058 513.45 -1.635 -0.70632 0.95814 -407 -3.1409 509.5 -1.708 -0.59684 0.79027 -406 -3.1989 504.08 -1.759 -0.41157 0.56049 -405 -3.2205 497.53 -1.778 -0.14209 0.28247 ..1 T-Mobile 00:24 100%- × HW3-InsolationAndIceVolume-425… 4521 Open With PrintExplanation / Answer
B2) thre components of milankovitch theory are, eccentricity, obliquity, and precession.
eccentricity: eccentricity used to describe the shape of the orbit.The variation of Earth's orbit around the sun ranges from an almost exact circle (eccentricity = 0.0005) to a slightly elongated shape (eccentricity = 0.0607). current eccentricity is around 0.016. The impact of the variation is a change in the amount of solar energy from perihelion to aphelion. when the Earth is closest to the sun, it gets more solar radiation. If it occurs during the winter, the winter is less severe. If the hemisphere has its summer while closest to the sun, summers arerelatively warm. this variations in temperature will affect the proportion of oxygen-18 to oxygen-16, from this paleotemperature can be obtain.
Obliquity: Obliquity is the variation of the tilt of the earth's axis away from the orbital plane. The tilt varies between 22.1o and 24.5o and the average is 23.5o The obliquity changes on a cycle taking approximately 40,000 yr. the more tilt means more severe seasons ;warmer summers and colder winters; less tilt leads to less severe seasons cooler summers and milder winters.
Precession: Precession is the change in orientation of the Earth's rotational axis.It is caused by the tidal forces exerted by the Sun and the Moon on the solid Earth. this change in axis will change the pole star. this will cause extreme variations in the hemispheres.
using this three components we can get a comprehensive idea about different time series.
B3)24.5 degree. the increased tilt will leads to the high solar radiation. so the maximum solar radiation can be a result of highest obliquity.
B4)22.1 degree. the minimum value of obliquity. hence the incoming solar radiation will decreases.
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