Last Updated
：2025/11/21
false easting
Noun
(cartography)
A
value
relating
to
distance
east
of
a
standard
meridian
but
with
a
constant
added
to
make
the
numbers
convenient.
For
instance,
in
UTM
the
value
500,000
is
added
to
the
easting
from
the
center
of
each
zone
to
return
a
false
easting
that
is
never
negative
(the
smallest
true
easting
is
approximately
-340,000
which
is
set
to
false
easting
of
160,000).
Japanese Meaning
地図作成で用いられる用語。基準となる子午線からの実際の東方向の距離（実際のイースティング）に、計算を容易にするためにあらかじめ定数を加算した値。たとえばUTM座標系では、各ゾーンの中心からの東方向の距離に500,000が加えられており、これにより値が常に正となるように調整される。
Sense（1）
(cartography)
A
value
relating
to
distance
east
of
a
standard
meridian
but
with
a
constant
added
to
make
the
numbers
convenient.
For
instance,
in
UTM
the
value
500,000
is
added
to
the
easting
from
the
center
of
each
zone
to
return
a
false
easting
that
is
never
negative
(the
smallest
true
easting
is
approximately
-340,000
which
is
set
to
false
easting
of
160,000).
（ plural ）
Quizzes for review
(cartography) A value relating to distance east of a standard meridian but with a constant added to make the numbers convenient. For instance, in UTM the value 500,000 is added to the easting from the center of each zone to return a false easting that is never negative (the smallest true easting is approximately -340,000 which is set to false easting of 160,000).
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See correct answer
false easting
Surveyors applied a false easting to the coordinates so that no easting values would be negative within the map zone.
See correct answer
Surveyors applied a false easting to the coordinates so that no easting values would be negative within the map zone.
音声機能が動作しない場合はこちらをご確認ください
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