Journal of Global Change Data & Discovery2020.4(1):87-88

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Citation:Zhang, Y. H., Liu, C., Shi, R. X.Channel Islands[J]. Journal of Global Change Data & Discovery,2020.4(1):87-88 .DOI: 10.3974/geodp.2020.01.12 .

DOI: 10

Global Change Data Encyclopedia

Channel Islands

Zhang, Y. H.  Liu, C.  Shi, R. X.

Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China

 

Keywords: Channel Islands, Cotentin Peninsula, English Channel, Normandy, data encyclopedia

 

The Channel Islands is located at the entrance to the Gulf of Saint-Malo, in the English Channel, west of the Cotentin peninsula of France, and 130 km south of the British Isles. It’s geo-location is 49°9′45″N-49°43′60″N, 2°40′32″W-1°55′30″W [1-3] (Figure 1, Figure 2).

 

Figure 1  Map of the Channel Islands dataset

(.shp format)

Figure 2  Map of the Channel Islands dataset (.kmz format)

 

The

Channel Islands comprise four main islands, Jersey, Guernsey, Alderney, and Sark[4]. They are 560 islands, islets, rocks and reefs with area bigger than 70 m2. The Jersey is the largest island, about 20 km west of the Cotentin peninsula and about 30 km south of the Guernsey. Its area is 121.63 km2 and coastline length is 100.25 km. Around it are two uninhabited isles, one of which is Minquiers southern extremity of the Channel Islands, and the other is Ecrehous eastern extremity of the Channel Islands. The second largest of the Channel islands is Guernsey with area of 65.59 km2 and coastline of 101.21 km, western of the Channels. Alderney is located north of the Channel Islands and separated from the Normandy coast by the swift Race of Alderney. Sark lies in the middle of the Channel Island, about 11 km east of Guernsey and consists of two components, Great Sark and Little Sark. Other small islands include Herm, Brecqhou, Lihou Island, Burhou, Jethou, Martresse, Casquets, Marmotiere, Ortac, et al. (Table 1). The total area of the Channel is 207.94 km² and the total coastline length is 408.82 km.

Table 1  Geolocation, area and coastline of main islands of the Channel Islands

Name of Island

Geolocation

Centroid of island

Area(km2)

Coastline(km)

Jersey

49°54′10″N-49°56′17″N, 6°19′45″W-6°16′31″W

49°55′15″N, 6°17′55″W

121.63

100.25

Guernsey

49°56′21″N-49°58′5″N, 6°21′8″W-6°19′9″W

49°57′16″N, 6°20′3″W

65.59

101.21

Alderney

49°57′21″N-49°58′54″N, 6°18′18″W-6°15′38″W

49°57′39″N, 6°16′58″W

8.68

26.19

Sark

49°52′56″N-49°53′56″N, 6°21′26″W-6°19′30″W

49°53′31″N, 6°20′29″W

5.56

22.47

Herm

49°56′31″N-49°58′2″N, 6°21′57″W-6°20′51″W

49°57′12″N, 6°21′22″W

1.40

6.31

Brecqhou

49°55′36″N-49°56′21″N, 6°21′31″W-6°20′49″W

49°55′57″N, 6°21′9″W

0.38

3.88

Lihou Island

49°53′26″N-49°54′1″N, 6°22′45″W-6°21′54″W

49°53′44″N, 6°22′18″W

0.24

2.93

Burhou

49°57′50″N-49°58′21″N, 6°19′8″W-6°18′25″W

49°58′6″N, 6°18′45″W

0.22

2.79

Jethou

49°56′54″N-49°57′21″N, 6°15′53″W-6°15′4″W

49°57′7″N, 6°15′28″W

0.22

2.04

Martresse

49°58′11″N-49°58′32″N, 6°19′49″W-6°19′12″W

49°58′21″N, 6°19′31″W

0.04

0.95

Casquets

49°56′31″N-49°56′53″N, 6°16′5″W-6°15′42″W

49°56′37″N, 6°15′53″W

0.03

0.98

Marmotiere

49°56′35″N-49°56′51″N, 6°16′48″W-6°16′22″W

49°56′43″N, 6°16′34″W

0.03

0.97

Ortac

49°57′5″N-49°57′22″N, 6°22′19″W-6°22′3″W

49°57′13″N, 6°22′10″W

0.002

0.17

 

The dataset was developed based on the Google Earth and related maps and references[5,6]. The dataset is consisted of 15 data files and archived in the .kmz and .shp data formats with the data size of 3.17 MB (Compressed to 1.33 MB in two files).

 

References

[1]       Channel Islands [OL]. Encyclopedia Britannica, Encyclopedia Britannica Inc., 13 Mar., 2019. https://www. britannica.com/place/Channel-Islands-English-Channel.

[2]       World Map Atlas: United Kingdom Atlas [M]. Beijing: Sino Maps Press, 2007.

[3]       LIU Chuang, SHI Ruixiang, ZHANG Yinghua, SHEN Yan, MA Junhua, WU Lizong, CHEN Wenbo, Tomoko Doko, CHEN Lijun, LV Tingting, TAO Zui, ZHU Yunqiang. Global Multiple Scale Shorelines Dataset Based on Google Earth Images (2015)[DB/OL]. Global Change Research Data Publishing & Repository, 2019. DOI: 10.3974/geodb.2019.04.13.V1.

[4]       Zhang Yinghua, LIU Chuang, SHI Ruixiang. Chanel Islands [DB/OL]. Global Change Data Repository, 2019. DOI: 10.3974/geodb.2019.

Data Computing Environment

[5]       ESRI. ArcGIS campus license of Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.

[6]       Google LLC. Google Earth Pro. 7.3.2.5481 (32-bit), hk.google.com.

URL for Data Downloading

http://www.geodoi.ac.cn/WebCn/doi.aspx?Id=1426.

Or search through: http://www.geodoi.ac.cn.

Co-Sponsors

Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences

The Geographical Society of China

Parteners

Committee on Data for Science and Technology (CODATA) Task Group on Preservation of and Access to Scientific and Technical Data in/for/with Developing Countries (PASTD)

Jomo Kenyatta University of Agriculture and Technology

Digital Linchao GeoMuseum