Bokak Atoll

Coordinates: 14°32′N 169°00′E / 14.533°N 169.000°E / 14.533; 169.000
Source: Wikipedia, the free encyclopedia.
Bokak Atoll
Ratak
Total islands10
Major islands6
Area129 km2 (50 sq mi)
Highest elevation3 m (10 ft)
Administration

Bokak Atoll (

Ratak Chain of the Marshall Islands, in the North Pacific Ocean
. Due to its relative isolation from the main islands in the group, Bokak's flora and fauna has been able to exist in a pristine condition.

Geography

It is located 685 km (426 mi) north of

Majuro Atoll, the capital of the Marshall Islands, and 280 km (170 mi) north-northwest of Bikar Atoll, the closest atoll, making it the most northerly and most isolated atoll of the country. Wake Island is 348 mi (560 km) north-northwest. The land area is 3.2 km2 (1.2 sq mi), and the lagoon measures 78 km2 (30 sq mi). It consists of 36 islets. The total area is 129 km2 (50 sq mi) (including reef flat).[2]

Physical features

Bokak Atoll - NASA NLT Landsat 7 (Visible Color) Satellite Image

The atoll is roughly crescent-shaped, measuring about 18 km (11 mi) by 9 km (5.6 mi), and oriented in a north–south direction. The atoll reef is unbroken except for a 20 m (66 ft) wide channel in the west. Ten islets lie on the eastern and southeastern reef. The more important named islets, from north to south, are North Island, Kamwome, Bwdije, Sibylla, Bokak, and Bwokwla. Sibylla is the largest, measuring approximately 7.2 km (4.5 mi) in length and up to 305 m (334 yd) in width. Kamwome Islet to the north-east of Sibylla is the second largest, while Bokak (Taongi), after which the atoll is named, lies to the south of Sibylla.[3]

Based on the results of drilling operations on

mya.[5]

Bokak's perched lagoon sits 3 feet (0.91 m) above the mean tide level, resulting in an unusually calm surface.

High boulder and sand ridges indicate a history of severe storms and are a feature of the islets. Inland on the wider islets are sand and rubble flats, while back from the lagoon sides are low sand and gravel ridges. Soils are mostly very immature, a mixture of coarser coral sand and gravel of various textures with very little humus accumulation. The lagoon is shallow, probably not exceeding 30 meters (98 ft) depth, and has many coral heads and patch reefs, some reaching the surface.[3]

The lagoon water level is up to 1 meter (3.3 ft) higher than the surrounding ocean due to an influx of wind-driven waters over the windward ocean reef and the presence of only one narrow reef passage on the leeward side. Water cascades over the coral-covered rim and flats of the sloping leeward reef. A massive algal ridge lines the outer edge of the windward reef, while the south and west reefs are coral-covered narrow flats where landings can be made in quiet weather. A very small algal rim, 100–150 mm (4–6 in) high, on lagoon shores of the westernmost islets, on east-facing lagoon reef-fronts and on the windward edges of coral patches in the lagoon, may be a feature unique to Taongi. This rim is maintained by the constant flow of water over the reef flat.[3]

Climate

Bokak is the driest of the Marshall Islands atolls, having a semi-arid character. Mean annual temperature is approximately 28 °C (82 °F). Mean annual rainfall is less than 1,000 mm (39 in), and falls primarily during the late summer. Prevailing winds are north to north-easterlies.[3]

Vegetation

bunchgrass, ʻihi (Portulaca molokiniensis), ʻilima (Sida fallax), or alena (Boerhavia herbstii), the latter being more abundant on broken coral gravel. A small stand of Pisonia grandis is found on Kamwome Islet and in another very small stand on Sibylla.[3]

Pure stands of very dense beach naupaka shrubland, sometimes with tree heliotrope, are predominant and cover 50-75% of southern, and nearly 100% of northeastern Sibylla. Heliotropium, Scaevola, and Sida dominated shrublands and the sandy bunchgrass savanna (Lepturus spp.) represent the finest examples of such vegetation in the Marshalls and probably the entire Pacific region.[3]

The aquatic vegetation of the shallow edges of the lagoon consists of sparse coralline algae, encrusting fragments of coral and shells, and patches of green seaweed.[3]

Fauna

golden plover, and the sanderling. The densest bird populations are on three islets to the north of Sibylla: North (Kita), Kamwome and an unnamed islet. Bokak is the only known breeding ground of Christmas shearwater and possibly Bulwer's petrel.[3]

Red-footed booby
on Sibylla Island

Terrestrial species includes the Polynesian rat on Sibylla. The more aggressive black rat appears to be absent, despite wrecked

soft coral species are present.[10]

History

Prehistory

Although humans migrated to the Marshall Islands about 2000 years ago,[11] there appear to be no traditional Marshallese artifacts present that would indicate any long term settlement. The harsh, desiccated climate, lack of potable water, and poverty of the soils indicate that the atoll will probably remain uninhabited. The atoll has traditionally been used for hunting and gathering, particularly seabirds, by inhabitants of other atolls in the northern Ratak chain.[3] Along with the other uninhabited northern Ratak atolls of Bikar and Toke, Bokak was traditionally the hereditary property of the Iroji Lablab (chiefs) of the Ratak atoll chain. The exploitation of abundant sea turtles, birds, and eggs was regulated by custom, and overseen by the Iroji.[12]

16th to 19th Century

The first European to record sighting Bokak was

Elcano.[13] It was charted as San Bartolome. It was explored by Spanish naval officer Fernando Quintano in 1795.[14] A number of other Western ships recorded landfall on or passage by Bokak over the following three hundred years, but no attempt at settlement or establishment of food animals was noted, likely due to the arid conditions, and more fertile atolls nearby.[15]

The

Meiji Emperor, the German administration noted Marshallese complaints of Japanese bird poaching, more from the view of protecting German sovereignty, rather than the interests of the islanders.[12]

20th century to present

In 1914, the Empire of Japan occupied the Marshall Islands, and transferred German government properties to their own, including Bokak. Like the Germans before them, the Japanese colonial administration did not attempt to exploit the atoll, and the Northern Radak Marshallese continued to hunt and fish unmolested.[12]

As a part of the 1940s Japanese militarization of the Marshall Islands, a small seaplane and communication outpost was established on Sibylla Island. During the early stages of the World War II, USN submarines operating in the area would periodically note patrols by Japanese aircraft.

USN, and USMC bombed the (abandoned) facility on April 23, 1944. The base became part of the vast US Naval Base Marshall Islands.[19]

The Marshall Islands as a whole were transferred to American administration in the wake of battles with Japanese forces in 1944. In September, 1945, as a part of the post-war repatriation of Japanese from their former Pacific possessions, a landing party was dispatched on

PBM Mariner searched for potential survivors. Two days of search failed to turn up any survivors, human remains, or graves.[20]

Corroded skeleton of IJN landing craft, Sibylla Island, 1953.

While en route from the US to Asia in April, 1953, LST 1138, later commissioned as USS Steuben County, dropped anchor at Bokak to search for rumored Japanese stragglers. The landing party noted the remains of the wartime outpost, but found no signs of any current occupants.[21]

Nuclear test site master plan, from a declassified 1957 LASL document.

In 1954, the experience of large scale fallout from the

mrem/hr (10 μGy) an hour after the shot, dropping to 0.4 mrem/hr (4 μGy) three hours later.[22] In 1957, Bokak was surveyed as a site for nuclear weapons testing as a part of Operation Hardtack, but due to the number of improvements required to develop it, was passed over in favor of reusing the Bikini, Enewetak, and Nevada test sites.[23] The atoll came under renewed consideration for use during Operation Dominic, but by that time the potential for political fallout from nuclear testing within a United Nations Trust Territory was deemed too great.[24]

The atoll played a part in the disappearance of several men from Maui, Hawaii. On February 11, 1979, Scott Moorman and four companions set sail from Hana harbor in a 17-foot Boston Whaler, and went missing in subsequent high seas. The boat and buried remains of Moorman were discovered 3,760 km (2,340 mi) away on Bokak in 1988.[25]

V73T on Sibylla Island.

In 1988, the US firm Admiralty Pacific proposed to use the Bokak lagoon as a dump for millions of tons of solid waste. The proposal involved shipping 3.5 million tons of waste the first year and up to 25 million tons and 30 ships after five years.[26]

In August, 2003, two ham radio enthusiasts from Texas camped on Sibylla Island for 76 hours to inaugurate the first Taongi ham station, call sign V73T, and assigned the IOTA[27] reference number OC-263. The station transmitted from coordinates 14°36.574′N 168°59.977′E / 14.609567°N 168.999617°E / 14.609567; 168.999617.[28][29]

The Dominion of Melchizedek, an unrecognized micronation, claims sovereignty over Bokak, based on a 45-year lease allegedly granted by the Iroji Lablab.[30] The rights conveyed to DOM cannot be greater than the traditional leader possessed themself. As such they are still subject to the Government of the Marshall Islands and are not independent.

Currently, historic remains include an abandoned camp/homestead, several wrecked ships and the remnant of the former World War Two Japanese communication outpost.[3]

See also

  • Desert island
  • List of islands

Footnotes

References

External links