SEG 1

Increasing salinity increases the speed of sound in water

57) As April 30, 2021, SEG membership stands at

Ehe EAGE was formed in 1991, originally as a section of SEG. Where did they have their headquarters?

79) Large storms are importante agents of change in coastal areas

55) The current SEG logo was adopted in

52) If elected as President you must serve on the board of Director for .. years

28) Reefs parallel to the shore but separated by a broad lagoon are called

37) Playas are ephimeral lakes of deserts

A fathometer is used to measure water depth

61) All volcanoes in North America are extinct

58) Who was the first female SEG president?

11) Which came first?

76) The coastlines eof every continent were drowned by rising sea-level following the last ice Age

51) What year was the first issue of Geophysics published?

20) Reflection coefficient is the ratio of

35) When downsweeping with vibroseis, the frequenci decreases with time

96) The rate at which stars are receding is approximately

49) Which is not a variety of quartz?

82) This mineral is thought to make up as much as the 60% of the Earth's upper mantle

91) Compaction and cementation are two common processes associated with

83) Which of the following describes the basis for AVO analysis?

64) A hydrophone, like those in marine streamers, measures

27) The reciprocal Youn's modulus is known as

100) The width of the band on the Earth's surface that expriences "total solar eclipse" is

78) The highest mountains also have the deepest roots

12) The incoming president of SEG is

39) Which of the following energy sources does NOT originally come from the sun?

16) Uranium 238 has a half-life of 4.5 billion years. How much of the original inventory of this isotope remains?

24) An S-wave which has horizontal component is known as

92) A CMP will not correspond to the CDP in case of

13) Which of these minerals have the greatest hardness?

42) Adiabatic condition means ... will not change

35) Seasonally, desert areas may have an abundance of water

Hula hoop, insulated cooper wire, galvanometer is used in what principle?

47) In the mid northern latitudes, the magnetic anomaly associated with a strong gravity anomaly will be displaced to

50) Which of the foloowing has been awarded the Maurice Ewing Medal the last year?

17) Wind erosion can only occur in desert areas

1) Resistivity surveying is a type of self-potential method

23) The San Andreas Fault in California is a

93) It is often best to design a gravity survey so that the acquisition grid is oriented east-west because:

59) Tomography reconstructs an object from a set of its projections

29) Some desert areas are adjacent to the ocean

65) The property of certain magnetic atoms which show no net magnetization is called antiferromagnetism

95) The age of the Earth is currently whotught to be about

10) The french model is..

22) Often 6 to 12 geophones spread out in a line are summed into a single seismic trace in order to

98) What is the approximate linear distance between two points separated by 1 degree along a latitude arch near equator?

70) Which of the following is not one of the 8 most abundant elements of the Earth's Crust?

43) Who first stated that "the angle of incidence equals the angle of relfection"?

81) A class III AVO response

71) Besides Earth, what other planets show evidence of stream erosion?

25) The classic "bright spot" gas sands have Class ... in Avo

54) A device that drops weights to produce a seismic source is

30) Exotic biological communities exist in the deep ocean

18) Multiples are coherent noise

69) Bouguer anomalies over mountain ranges are generally .. after isostatic correction

15) Paleomagnetism depends on recognizing magnetisation “frozen in” to a rock at some time. This is called

68) Deposition refers to the erosion, transfer, and redepositing of sediments. Diagenesis refers to

99) For frequency-domain electromagnetic profiling, conductivity in mS/m is

31) Elasticity is the ability of a material to return to its original shape after removing the external force

4) The Darcy is a unit of permeability

26) Quadrature trace can be obtained by using ...

7) Hydraulic action, solution and abrasion are examples o

87) Which is the correct order, from earlier to most recent?

90) Ridges sediment deposited on the margins of a stream are called

67) Which of the following mineral properties gives the least reliable due to its identity?

6) In a 1968 Science article, Press reported that the mineralogy of Earth’s inner core is a mix of Fe and

32) The magnetic field of the Earth wanders about the pole a few meters every year

66) Using the Earth's magnetic field for exploration purposes requires

40) Alpine glaciation

62) Ambient of noise is always random

63) As a rule, Vp/Vs is

89) Free air correction accounts for gravity changes due to ...

5) Ice ages occur only in the Cenozoic

72) A chart showing the locus of equal traveltimes to an offset geophone is called a .. chart

3) Mountain ranges are affected by tectonic processes.

46) A positive gravity anomaly indicates

37) Earth's gravitational acceleration is aprox 5000mGal higher at the equator at the nort pole

A fault propagation fold is a tip-line fold

77) Mass wasting is sometimes predictable

56) As of April 30, 2021, SEG has .. student sections

21) Pre-cambrian shields

41) After university, what was Dr. Alfred Wegener's primary field of study?

60) There are more detailed maps of Venus than of the Eart's sea floor

14) Regional metamorphism is associated with

86) The Devonian a solar year was 400 days long. What is the main cause of the Earth's slowing rotation?

Which of these layers of the atmosphere is important for radio transmissions?

97) On the average, a column of ... snow will form a 2m of glacier ice

38) Time lag is indicative of faster velocities along a particular travel path

54) Oceanic trenches are

84) In the standard UTM projection system the Earth is divided into ... north-south columns.

94) In what year was the Maurice Ewing Medal established as SEG's highest award?

48) Isotopes have

80) Slate is a metamotphic rock type associated with

45) Which of the following does Archie's law not talk about?

88) Alpine glaciers flow downhill because