610
July 2014
PHOTOGRAMMETRIC ENGINEERING & REMOTE SENSING
observation. For Nukuoro 1951 Datum at origin Astronomic
Station No. 4: Φ
o
= 3° 49′ 43.3″ N, Λ
o
= 154° 57′ 35.9″ E, α
o
=
229° 33′ 35.7 to Azimuth Mark from south, and referenced to
the International 1924 ellipsoid. For Onari Datum: Φ
o
= 8° 45′
28″ N, Λ
o
= 150° 19° 37″ E, from H.O. chart 81288. For Oroluk
1951 Datum, Φ
o
= 7° 37′ 29.5″ N, Λ
o
= 155° 09′ 12.4″ E, α
o
= 223°
12′ 29.4″ to AP3 from south, referenced to the International
1924 ellipsoid. For Pingelap 1951 Datum origin No. 1 Astro:
Φ
o
= 6° 12′ 30.9″ N, Λ
o
= 160° 42′ 13.4″ E, α
o
= 321° 51′ 16.0″,
referenced to the International 1924 ellipsoid. For Pisaras Is-
land Datum: Φ
o
= 8° 35′ 05″ N, Λ
o
= 150° 24′ 11″ E. For Ponape
Astro 1962 Datum, Φ
o
= 6° 58′ 35.49″ N ±0.09²
(P.E.)
, Λ
o
=
158° 11′ 16.14″ E ±0.10²
(P.E.)
, α
o
= 276° 20′ 47.65″ ±0.18²
(P.E.)
from Ponape RM1 to DISTAD from south, referenced to the
International 1924 ellipsoid. Note that the Japanese observa-
tion (on the Bessel 1841 ellipsoid) is: Φ
o
= 7° 00′ 23.20″ N, Λ
o
=
158° 13′ 49.80″ E. For Pulap 1920 Datum origin at Astronomic
Station B1: Φ
o
= 7° 38′ 20.99″ N, Λ
o
= 149° 24′ 58.80″ E. For
Pulusuk 1921 Datum at Astro station: Φ
o
= 6° 42′ 15″ N, Λ
o
=
149° 18′ 47″ E. For Puluwat 1951 Datum origin at Astro Sta.
1, Kihoko: Φ
o
= 7° 21′ 25.3″ N, Λ
o
= 149° 11′ 37.2″ E, α
o
= 001°
15′ 41.8″ to 3. α mark (Kinan) from south, referenced to the
International 1924 ellipsoid. For Sorol 1920 Datum origin at
Sorol Island Astro: Φ
o
= 8° 08′ 00″ N ±5.6, Λ
o
= 140° 24′ 30″ E ±
2.5″ referenced to both the Clarke 1866 and the International
1924 ellipsoids. The Sumner Astro 1944 Monument at: Φ
o
=
10° 05′ 25.06″ N, Λ
o
= 139° 42′ 15.78″ E was observed by U.S.S.
Sumner, Oct. – Nov.1944. Compare to Ulithi 1951 Datum or-
igin at Ulithi Astro (32): Φ
o
= 10° 04′ 52.8″ N ±0.92, Λ
o
= 139°
44′ 22.5″ ±5.03″ E, α
o
= 121° 28′ 11.0″ to 31 from north and ref-
erenced to the Clarke 1866 ellipsoid, but incorrect time signals
were applied. The correct longitude should be 139° 44′ 22.3″.
The UK in 1994 gave values of Φ
o
= 10° 04′ 51.0″, Λ
o
= 139°
44′ 28.2″. (No explanation.) For the Truk Astro 1951 Datum
origin at Astro Station No. 2: Φ
o
= 7° 21′ 37.7″ N, Λ
o
= 151° 53′
34.3″ E, α
o
= 51° 58′ 17.1″ to 76 from south, referenced to the
International 1924 ellipsoid. For Ulul Astro Station 1916 Da-
tum origin at Obs. Spot: Φ
o
= 8° 34′ 59.0″ N, Λ
o
= 149° 39′ 27.9″
E in the Namonuito area, note that USHO Chart 5416 (1945)
Minto Reef 1:50,000 Series W756 Sheet 5046 II, Ed. 1-AMS
Minto Reef is based on this. No further explanation offered.
For West Fayu 1921 Datum origin point at Astro Station: Φ
o
=
8° 05′ 17″ N, Λ
o
= 146° 44′ 29″ E, and was observed by the United
Kingdom. For Woleai Island 1951 Datum origin at Occultation
Station 1955 Astro: Φ
o
= 7° 22′ 17.8″ N, Λ
o
= 143° 54′ 04.2″ E, α
o
=
296° 10′ 42.0″ to 17 (Az. Mark) from south, H
o
= 4.2 ft., referenced
to the International 1924 ellipsoid. Finally, for Yorupikku Φ
o
= 6°
41′ 12″ N, Λ
o
= 143° 04′ 47″ E, observed by the UK.
The contents of this column reflect the views of the author, who is
responsible for the facts and accuracy of the data presented herein. The
contents do not necessarily reflect the official views or policies of the
American Society for Photogrammetry and Remote Sensing and/or the
Louisiana State University Center for GeoInformatics (C
4
G).
minutia of geoscience, almost to the point of being far-fetched.
There are several chapters that suffer from minor
typographical errors as well as tables without units and
acronyms without explanation while other chapters are well
edited. The most egregious error is that the chapter “The
estimation of MOEs change based on CBR in Spatial Analysis
andDataMining” contains footnotes that do not appear to relate
to anything. Also, a few copies were distributed containing
black and white images instead of color plates, making several
chapters difficult to comprehend, as the explanations are
dependent on color. If a reader receives a black and white copy,
the publisher will replace it with a corrected version.
Overall, the book is a stimulating and worthwhile read,
as it will amaze the reader with the variety of Geospatial
Information Science applications available.
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