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挪威盖朗厄尔峡湾一角

地质学中,峡湾(英语:fjord 或 fiord(聆听i/ˈfjɔːrd/聆听i/fiˈɔːrd/))[1]指的是由冰川侵蚀、带有狭长的入口英语inlet和陡峭的山壁或悬崖的、与峡谷相似的地理特征。[2]峡湾通常分布于中高纬度的海岸线,如北半球的阿拉斯加不列颠哥伦比亚格陵兰法罗群岛冰岛堪察加纽芬兰与拉不拉多新地岛挪威努纳武特地区魁北克苏格兰华盛顿;南半球则分布在南极洲智利凯尔盖朗群岛新西兰南乔治亚等地。[3] 其中,拥有世界第九长海岸线的挪威,在扣除掉峡湾的海岸线后,海岸线长度从原先的25,148公里大幅缩短为2,500余公里。[4][5]

形成

 
位于格陵兰岛东部的冰川流经经冰蚀作用侵蚀的峡湾。
 
解释峡湾形成的插图——山体经冰川侵蚀后留下低于海平面的沟槽,海水入侵形成峡湾。
 
南峡湾英语Sørfjorden (Hardanger)桑维瓦纳湖英语Sandvinvatnet和奥达谷地可被视为哈当厄峡湾的延伸。照片中奥达位于地峡上(照片中央),分隔桑维瓦纳湖(照片中央偏上)和南峡湾(照片中央偏下)。

一般情况下,峡湾是因冰川流经底部略为倾斜的谷地,经冰川侵蚀产生过量下蚀英语Overdeepening的U型深谷,待冰川消融后,低于海平面、受海水入侵的谷地即为峡湾。具体来说,U型谷冰磨损作用冰分凝作用英语ice segregation的产物,[6]而底部同样是U型谷,但高于海平面的封闭水体则称为冰蚀湖[7] 大多数的峡湾皆较周围的海域深,如挪威的松恩峡湾,湾内最深处达到海平面下1,300米(4,300英尺),而其相邻的海域挪威海沿岸区域的平均深度仅达700米(2,300英尺);峡湾的入口处有时会有由基岩构成的海栏英语Aquatic sill浅滩,为冰川消融成冰水时淘选度英语Graded bedding上升,结合携带的沉积物及终碛产生的岩质或砂质堆积。[8] 这个构造有可能使邻近水域涨退潮时产生急潮英语Tidal race,如挪威的史克雅斯塔德峡湾(Skjerstad Fjord)与萨尔特海峡(Saltstraumen)的汇流处,每当海水从海峡灌入峡湾,便会产生一股被称为萨尔特漩涡英语Saltstraumen#Current的强劲海流。另外,挪威德拉门峡湾英语Drammensfjorden的砂质终碛因为后冰期回弹英语post-glacial rebound的因素,在斯韦尔维克产生了一座高60米(200英尺)的突出物。[9] 前述特征也成为分辨峡湾和溺湾(谷湾)的方法:溺湾是由河川侵蚀形成,被海水淹没的海湾,其出口处通常没有浅滩或沙洲。

19世纪时延斯·埃斯马克英语Jens Esmark提出峡湾由冰川形成及现今的北欧地区大部分被冰盖覆盖的理论:[10]他认为入口的浅滩及过度下蚀的谷底是支持其理论的强力证据,[11]特别是因为这些浅滩是岩质的,而非砂质的。约翰·华特·古格里则认为峡湾的成因与地质构造运动相关,并否定冰川与其的关联性。他以哈当厄峡湾为例,指出其侵蚀方向由加里东造山运动造成的破裂缺口引导。但古格里的观点无法解释松恩峡湾的形成(因为无法找出地质褶皱与峡湾的关联),因此其论点后来不被研究及出版品接受,并转向支持埃斯马克的理论。[10] 但是在灵恩地区仍有发现峡湾与裂口走势相符,[12]推测是由第三纪时处于先冰期的河流侵蚀地表产生沟槽,引导冰川的侵蚀方向;此现象在挪威西岸很常见,由于伴随着地层抬升,河川侵蚀力更强。[10]

多条支流冰川河流处将侵蚀出相对周遭区域更深的底部。典型挪威西海岸地区的冰川在离开山麓带后,会借由港湾(英语:sound)和低谷往低处扩散,且在过程中损失下蚀力,从而导致冰川无法突破入口浅滩(即入口浅滩会相对更浅。)波斯塔峡湾书面挪威语Bolstadfjorden平均深度为160米(520英尺),而其浅滩只有 1.5米(4英尺11英寸)深;[7][10]平均1,300米(4,300英尺)深的松恩峡湾的入口浅滩也仅有100至200米(330至660英尺)深。[13][14] Hardangerfjord is made up of several basins separated by thresholds: The deepest basin Samlafjorden between Jonaneset (Jondal) og Ålvik with a distinct threshold at Vikingneset in Kvam.[10]

 
Muldalsfossen waterfall drops several hundred meters from the Muldalen hanging valley to Tafjorden.

Hanging valleys are common along glaciated fjords and U-shaped valleys. A hanging valley is a tributary valley that is higher than the main valley and were created by tributary glacier flows into a glacier of larger volume. The shallower valley appears to be 'hanging' above the main valley or a fjord. Often, waterfalls form at or near the outlet of the upper valley.[15] Hanging valleys also occur under water in fjord systems. The branches of Sognefjord are for instance much shallower than the main fjord. The mouth of Fjærlandsfjord is about 400米(1,300英尺) deep while the main fjord is 1,200米(3,900英尺) nearby. The mouth of Ikjefjord is only 50 meters deep while the main fjord is around 1,300米(4,300英尺) at the same point.[11]

Fjord features and variations

 
Distribution of ice (white) in Europe during the last glacial period

Hydrology

During the winter season there is usually little inflow of freshwater. Surface water and deeper water (down to 100米或330英尺 or more) are mixed during winter because of the steady cooling of the surface and wind. In the deep fjords there is still fresh water from the summer with less density than the saltier water along the coast. Offshore wind, common in the fjord areas during winter, sets up a current on the surface from the inner to the outer parts. This current on the surface in turn pulls dense salt water from the coast across the fjord threshold and into the deepest parts of the fjord.[16] Bolstadfjorden has a threshold of only 1.5米(4英尺11英寸) and strong inflow of freshwater from Vosso river creates a brackish surface that blocks circulation of the deep fjord. The deeper, salt layers of Bolstadfjorden are deprived of oxygen and the seabed is covered with organic material. The shallow threshold also creates a strong tidal current.[7]

During the summer season there is usually a large inflow of river water in the inner areas. This freshwater gets mixed with saltwater creating a layer of brackish water with a slightly higher surface than the ocean which in turn sets up a current from the river mouths towards the ocean. This current is gradually more salty towards the coast and right under the surface current there is a reverse current of saltier water from the coast. In the deeper parts of the fjord the cold water remaining from winter is still and separated from the atmosphere by the brackish top layer. In fjords with a shallow threshold this deep water is not replaced every year and low oxygen concentration makes the deep water unsuitable for fish and animals. In the most extreme cases there is a constant barrier of freshwater on the surface and the fjord freezes over such that there is no oxygen below the surface. Drammensfjorden is one example.[16]

The Gaupnefjorden branch of Sognefjorden is strongly affected by freshwater as a glacial river flows in. Velfjorden has little inflow of freshwater.[17]

Coral reefs

As late as 2000, some coral reefs were discovered along the bottoms of the Norwegian fjords.[18] These reefs were found in fjords from the north of Norway to the south. The marine life on the reefs is believed to be one of the most important reasons why the Norwegian coastline is such a generous fishing ground. Since this discovery is fairly new, little research has been done. The reefs are host to thousands of lifeforms such as plankton, coral, anemones, fish, several species of shark, and many more. Most are specially adapted to life under the greater pressure of the water column above it, and the total darkness of the deep sea.[19]

New Zealand's fjords are also host to deep-water corals, but a surface layer of dark fresh water allows these corals to grow in much shallower water than usual. An underwater observatory in Milford Sound allows tourists to view them without diving.[20]

Skerries

In some places near the seaward margins of areas with fjords, the ice-scoured channels are so numerous and varied in direction that the rocky coast is divided into thousands of island blocks, some large and mountainous while others are merely rocky points or rock reefs, menacing navigation. These are called skerries.[19] The term skerry is derived from the Old Norse sker, which means a rock in the sea.[21]

Skerries most commonly formed at the outlet of fjords where submerged glacially formed valleys perpendicular to the coast join with other cross valleys in a complex array. The island fringe of Norway is such a group of skerries (called a skjærgård); many of the cross fjords are so arranged that they parallel the coast and provide a protected channel behind an almost unbroken succession of mountainous islands and skerries. By this channel one can travel through a protected passage almost the entire 1,601 km(995 mi) route from Stavanger to North Cape, Norway. The Blindleia is a skerry-protected waterway that starts near Kristiansand in southern Norway, and continues past Lillesand. The Swedish coast along Bohuslän is likewise skerry guarded. The Inside Passage provides a similar route from Seattle, Washington, and Vancouver, British Columbia, to Skagway, Alaska. Yet another such skerry protected passage extends from the Straits of Magellan north for 800 km(500 mi).

Epishelf lakes

An epishelf lake forms when meltwater is trapped behind a floating ice shelf and the freshwater floats on the denser saltwater below. Its surface may freeze forming an isolated ecosystem.

Etymology

 
Important fjords and lakes in Norway. Note: The part of the map showing the northern fjords has a considerably smaller scale. Blurred coastlines = skerries

The word fjord comes from Norwegian (pronounced [ˈfjuːr], [ˈfjøːr], [ˈfjuːɽ] or [ˈfjøːɽ] in various dialects), where it can have a more general meaning: in many cases to refer to any long narrow body of water, inlet or channel (for example, see Oslofjord).

The Norse verb ferd (travelling/ferrying), the Norse noun substantive fjǫrðr means a "lake-like" waterbody used for passage and ferrying, which is of Indo-European origin (*prtús from *por- or *per).[22]

The Scandinavian fjord, Proto-Scandinavian *ferþuz, is the origin for similar Germanic words: Icelandic fjörður, Swedish fjärd (for Baltic waterbodies), Scots firth.[22] The Norse noun fjǫrðr was adopted in German as Förde, used for the narrow long bays of Schleswig-Holstein, and in English as firth "fjord, river mouth". The English word ford (compare German Furt, Low German Ford or Vörde, in Dutch names voorde such as Vilvoorde, Ancient Greek πόρος, poros, and Latin portus) is assumed to originate from Germanic ferþu- and Indo-European root *pertu- meaning "crossing point". Fjord/firth/Förde as well as ford/Furt/Vörde/voorde refer to a Germanic noun for a travel: North Germanic ferd or färd and of the verb to travel, Dutch varen, German fahren; English to fare.[23]

As a loanword from Norwegian, it is one of the few words in the English language to start with the sequence fj.[24] The word was for a long time normally rendered fiord,[25] a spelling preserved in place names such as Grise Fiord, but now generally current only in New Zealand English.

Scandinavian usage

 
Fjord à Christiania, by Claude Monet (1895).
 
Holandsfjorden with Svartisen glacier in Nordland.

The use of the word fjord in Norwegian, Danish and Swedish is more general than in English and in international scientific terminology. In Scandinavia, fjord is used for a narrow inlet of the sea in Norway, Denmark and western Sweden, but this is not its only application. In Norway and Iceland, the usage is closest to the Old Norse, with fjord used for both a firth and for a long, narrow inlet. In eastern Norway, the term is also applied to long narrow freshwater lakes (for instance Mjøsa [commonly referred to as fjorden], Randsfjorden and Tyrifjorden) and sometimes even to rivers (in local usage, for instance in Flå in Hallingdal, the Hallingdal river is referred to as fjorden). In southeast Sweden, the name fjard fjärd is a subdivision of the term 'fjord' used for bays, bights and narrow inlets on the Swedish Baltic Sea coast, and in most Swedish lakes. This latter term is also used for bodies of water off the coast of Finland where Finland Swedish is spoken. In Danish, the word may even apply to shallow lagoons. In modern Icelandic, fjörður is still used with the broader meaning of firth or inlet. In Faroese fjørður is used both about inlets and about broader sounds, whereas a narrower sound is called sund. In the Finnish language, a word vuono is used although there is only one fjord in Finland. Small waterfalls within these fjords are also used as freshwater resources for the people of Scandinavia and, in particular, Norway.

In old Norse genitive was fjarðar whereas dative was firði. The dative form has become common place names like Førde (for instance Førde), Fyrde or Førre (for instance Førre).[26]

The German use of the word Föhrde for long narrow bays on their Baltic Sea coastline, indicates a common Germanic origin of the word. The landscape consists mainly of moraine heaps. The Föhrden and some "fjords" on the east side of Jutland, Denmark are also of glacial origin. But while the glaciers digging "real" fjords moved from the mountains to the sea, in Denmark and Germany they were tongues of a huge glacier covering the basin of which is now the Baltic Sea. See Förden and East Jutland Fjorde.

Whereas fjord names mostly describe bays (though not always geological fjords), straits in the same regions typically are named Sund, in Scandinavian languages as well as in German. The word is related to "to sunder" in the meaning of "to separate". So the use of Sound to name fjords in North America and New Zealand differs from the European meaning of that word.

The name of Wexford in Ireland is originally derived from Veisafjǫrðr ("inlet of the mud flats") in Old Norse, as used by the Viking settlers—though the inlet at that place in modern terms is an estuary, not a fjord.

Before or in the early phase of Old Norse angr was another common noun for fjords and other inlets of the ocean. This word has survived only as a suffix in names of some Scandinavian fjords and has in same cases also been transferred to adjacent settlements or surrounding areas for instance Hardanger, Stavanger and Geiranger.[27][28]

Differences in definitions

 
The Lim bay in Croatia is commonly called a fjord but is scientifically a ria.

The differences in usage between the English and the Scandinavian languages have contributed to confusion in the use of the term fjord. Bodies of water that are clearly fjords in Scandinavian languages are not considered fjords in English; similarly bodies of water that would clearly not be fjords in the Scandinavian sense have been named or suggested to be fjords. Examples of this confused usage follow.

The Bay of Kotor in Montenegro has been suggested by some to be a fjord, but is in fact a drowned river canyon or ria. Similarly the Lim bay in Istria, Croatia, is sometimes called "Lim fjord" although it was not carved by glacial erosion but instead is a ria dug by the river Pazinčica. The Croats call it Limski kanal, which does not translate precisely to the English equivalent either.

In the Danish language any inlet is called a fjord, but none of the fjords of Denmark may be considered a fjord in the geological sense. Limfjord in English terminology is a sound, since it separates the North Jutlandic Island (Vendsyssel-Thy) from the rest of Jutland. Ringkøbing Fjord on the western coast of Jutland is a lagoon. The long narrow fjords of Denmark's Baltic Sea coast like the German Förden were dug by ice moving from the sea upon land, while fjords in the geological sense were dug by ice moving from the mountains down to the sea.

The fjords in Finnmark (Norway), which are fjords in the Scandinavian sense of the term, are not universally considered to be fjords by the scientific community.[29] Although glacially formed, most Finnmark fjords lack the steep-sided valleys of the more southerly Norwegian fjords since the glacial pack was deep enough to cover even the high grounds when they were formed. The Oslofjord on the other hand is a rift valley, and not glacially formed.

In Acapulco, Mexico, the calanques—narrow, rocky inlets—on the western side of the city, where the famous cliff-divers perform daily, are described in the city's tourist literature as being fjords.

Freshwater fjords

 
Eidfjord village beneath the high terrace, the original ice-age delta. The river has carved a gorge through the terrace.

Some Norwegian freshwater lakes that have formed in long glacially carved valleys with sill thresholds, ice front deltas or terminal moraines blocking the outlet follow the Norwegian naming convention; they are frequently named fjords. Ice front deltas developed when the ice front was relatively stable for long time during the melting of the ice shield. The resulting landform is an isthmus between the lake and the saltwater fjord, in Norwegian called "eid" as in placename Eidfjord or Nordfjordeid. The post-glacial rebound changed these deltas into terraces up to the level of the original sea level. In Eidfjord, Eio has dug through the original delta and left a 110米(360英尺) terrace while lake is only 19米(62英尺) above sea level.[30][31] Such deposits are valuable sources of high quality building materials (sand and gravel) for houses and infrastructure.[32] Eidfjord village sits on the eid or isthmus between Eidfjordvatnet lake and Eidfjorden branch of Hardangerfjord.[33] Nordfjordeid is the isthmus with a village between Hornindalsvatnet lake and Nordfjord.[34][35] Such lakes are also denoted fjord valley lakes by geologists.[36]

One of Norway's largest is Tyrifjorden at 63米(207英尺) above sea level and an average depth at 97米(318英尺) most of the lake is under sea level. Norway's largest lake, Mjøsa, is also referred to as "the fjord" by locals.[31] Another example is the freshwater fjord Movatnet (Mo lake) that until 1743 was separated from Romarheimsfjorden by an isthmus and connected by a short river. During a flood in November 1743 the river bed eroded and sea water could flow into the lake at high tide. Eventually Movatnet became a saltwater fjord and renamed Mofjorden (Mofjorden[挪威语]).[37] Like fjords, freshwater lakes are often deep. For instance Hornindalsvatnet is at least 500米(1,600英尺) deep and water takes an average of 16 years to flow through the lake.[38] Such lakes created by glacial action are also called fjord lakes or moraine-dammed lakes.[39]

Some of these lakes were salt after the ice age but later cut off from the ocean during the post-glacial rebound.[17] At the end of the ice age Eastern Norway was about 200米(660英尺) lower (the marine limit). When the ice cap receded and allowed the ocean to fill valleys and lowlands, and lakes like Mjøsa and Tyrifjorden were part of the ocean while Drammen valley was a narrow fjord. At the time of the Vikings Drammensfjord was still four或five米(13或16英尺) higher than today and reached the town of Hokksund, while parts of what is now the city of Drammen was under water.[40] After the ice age the ocean was about 150米(490英尺) at Notodden. The ocean stretched like a fjord through Heddalsvatnet all the way to Hjartdal. Post-glacial rebound eventually separated Heddalsvatnet from the ocean and turned it into a freshwater lake.[41][42] In neolithic times Heddalsvatnet was still a saltwater fjord connected to the ocean, and was cut off from the ocean around 1500 BC.[43]

Some salt water fish got trapped in lakes that originally were part of the salt fjord and gradually became freshwater fish such as the arctic char.[44] Some freshwater fjords such as Slidrefjord are above the marine limit.

Like freshwater fjords, the continuation of fjords on land are in the same way denoted as fjord-valleys. For instance Flåmsdal (Flåm valley) and Måbødalen.[10][45][46]

 
Årdalstangen village on the small isthmus between Årdalsvatnet lake (behind) and Årdalsfjorden branch of Sognefjorden (front)

Outside of Norway, the three western arms of New Zealand's Lake Te Anau are named North Fiord, Middle Fiord and South Fiord. Another freshwater "fjord" in a larger lake is Western Brook Pond, in Newfoundland's Gros Morne National Park; it is also often described as a fjord, but is actually a freshwater lake cut off from the sea, so is not a fjord in the English sense of the term. Locally they refer to it as a "landlocked fjord". Such lakes are sometimes called "fjord lakes". Okanagan Lake was the first North American lake to be so described, in 1962.[47] The bedrock there has been eroded up to 650米(2,133英尺) below sea level, which is 2,000米(6,562英尺) below the surrounding regional topography.[48] Fjord lakes are common on the inland lea of the Coast Mountains and Cascade Range; notable ones include Lake Chelan, Seton Lake, Chilko Lake, and Atlin Lake. Kootenay Lake, Slocan Lake and others in the basin of the Columbia River are also fjord-like in nature, and created by glaciation in the same way. Along the British Columbia Coast, a notable fjord-lake is Owikeno Lake, which is a freshwater extension of Rivers Inlet. Quesnel Lake, located in central British Columbia, is claimed to be the deepest fjord formed lake on Earth.

Great Lakes

A unique family of freshwater fjords are the embayments of the North American Great Lakes. Baie Fine is located on the northwestern coast of Georgian Bay of Lake Huron in Ontario, and Huron Bay is located on the southern shore of Lake Superior in Michigan.

地点

 
挪威南部的松恩峡湾为该国最长的峡湾,[22]同时也是当地著名的观光景点之一。
 
冰岛北部的埃亚峡湾阿克雷里位于右侧远处。
 
爱尔兰的凯拉雷港英语Killary Harbour位于该国西部。
 
新西兰的米尔福德峡湾
 
位于美国阿拉斯加州基奈峡湾国家公园内峡湾的冰川。
 
挪威北部的廷斯峡湾属于极北生态系英语boreal ecosystem的一部分。
 
南乔治亚岛德里加尔斯基港的入口。
 
新地岛的伊诺斯特兰采夫峡湾英语Inostrantsev Glacier

峡湾主要形成于冰河期曾有冰川流经的中高纬度的山区,纬度最高可抵北纬80度(斯瓦尔巴格陵兰)。峡湾地形通常于拥有西风吹拂的山岳区域会较为发达,因水汽受山脉阻挡而地形举升英语Orographic lift造成大量降雪,有助于冰川的发展;因此符合此条件的地区如挪威西岸、普吉特海湾、新西兰西岸、南美洲西南海岸(智利)等地大都有发现峡湾。

主要分布地区

其余区域

其余区域亦有峡湾的存在,但可能因西风的水汽未受山岳太多阻拦等因素造成峡湾并不发达或不明显。这些区域包括:

Extreme fjords

 
Snow-covered mountains stands out in contrast to the dark water of Efjorden and Stefjorden, Tysfjorden and Ofotfjorden in the distance.

The longest fjords in the world are:

  1. Scoresby Sund in Greenland—350 km(217 mi)[50][51]
  2. Greely Fiord/Tanquary Fiord in Canada—230 km(143 mi) [来源请求] The length of the total fjord system from the head of Tanquary Sound, through Greely Fjord, to the mouth of Nansen Sound is approximately 400 km, making it arguably the longest fjord in the world.[来源请求]
  3. Sognefjord in Norway—204 km(127 mi)[52]
  4. Independence Fjord in Greenland—200 km(124 mi)
  5. Matochkin Shar, Novaya Zemlya, Russia—125 km(78 mi) (a strait with a fjord structure)[53]

Deep fjords include:

  1. Skelton Inlet in Antarctica—1,933米(6,342英尺)
  2. Sognefjord in Norway—1,308米(4,291英尺)[54][52] (the mountains then rise to up to 1,500米(4,921英尺) and more, Hurrungane reaches 2,400米(7,874英尺))[55]
  3. Messier Channel in Tortel, Chile—1,358米(4,455英尺)[来源请求]
  4. Baker Channel in Tortel, Chile—1,251米(4,104英尺)

See also

Notes

  1. ^ Fjord – Definition of fjord by Merriam-Webster. merriam-webster.com. 
  2. ^ What is a Fjord, and how is it formed... - Norway Today. Norway Today. 2016-05-08 [2017-12-30] (美国英语). 
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  13. ^ Geografisk leksikon, edited by Waldemar Brøgger. Oslo: Cappelen, 1963.
  14. ^ https://snl.no/Sognefjorden
  15. ^ Glossary of Glacier Terminology. U.S. Geological Survey. May 28, 2004 [2007-05-24]. 
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  21. ^ Moore 1890,第277页.
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  24. ^ fjeld is another
  25. ^ In 1926 the A Dictionary of Modern English Usage said: "The OED gives precedence to fi-. The other spelling is apparently used in English to help the ignorant to call it fyord; as, instead of helping, it only puzzles them, it should be abandoned"
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  34. ^ Tveit, Olav Jakob (1998). Indre Nordfjord. Oslo: Lunde. ISBN 8252031609.
  35. ^ Indre Nordfjord: geologi og landskap. Oppstryn: Jostedalsbreen nasjonalparksenter, 1995.
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  37. ^ Bygdebok for Modalen og Eksingedalen. Bind 2. Sogenemnda, 1990.
  38. ^ NVE Atlas. Vassdrag – Innsjødatabase – Dybdekart 互联网档案馆存档,存档日期2015-06-26. (National lakes database). Norges vassdrags- og energidirektorat (Norwegian Water Resources and Energy Directorate). Accessed 13 June 2015
  39. ^ Strøm, Kaare. Innsjøenes verden. Oslo: Universitetsforlaget. 1959. 
  40. ^ Johansen, Øystein Klock. Fra fangstmann til viking. Hokksund: Øvre Eiker kommune. 1994. 
  41. ^ Telemark. Oslo: Gyldendal. 1975. ISBN 8205068445.
  42. ^ Norge sett fra luften. Oslo: Det Beste. 1980. ISBN 8270100935.
  43. ^ Mikkelsen, Egil (1989). Fra jeger til bonde: utviklingen av jordbrukssamfunn i Telemark i steinalder og bronsealder. Oslo: Universitetets oldsaksamling. ISBN 8271810790.
  44. ^ Berger, Hans Mack. Utbredelse og status for ferskvannsfisk i innsjøer i Nord-Trøndelag. Trondheim: NINA – Norsk institutt for naturforskning. 1999. ISBN 8242610517. 
  45. ^ Hansen, L., Eilertsen, R. S., Solberg, I. L., Sveian, H., & Rokoengen, K. (2007). Facies characteristics, morphology and depositional models of clay-slide deposits in terraced fjord valleys, Norway. Sedimentary Geology, 202(4), 710-729.
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  47. ^ Nasmith, Hugh. Late glacial history and surficial deposits of the Okanagan Valley, British Columbia. Victoria, BC, Canada: BC Ministry of Energy, Mines and Petroleum Resources. 1962. 
  48. ^ Eyles, Nicholas; Mullins, Henry T.; Hine, Albert C. Thick and fast: Sedimentation in a Pleistocene fiord lake of British Columbia, Canada. Geology. 1990, 18 (11): 1153–1157. Bibcode:1990Geo....18.1153E. doi:10.1130/0091-7613(1990)018<1153:TAFSIA>2.3.CO;2. 
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  50. ^ Sandell, Hanne Tuborg; Sandell, Birger. Archaeology and Environment in the Scoresby Sund Fjord. Museum Tusculanum Press. 1991: 7. ISBN 87-635-1208-4. 
  51. ^ Migoń, Piotr (编). Geomorphological Landscapes of the World. Springer. 2010: 227. ISBN 90-481-3054-9. 
  52. ^ 52.0 52.1 Øi, Ørnulf. Norges sjøatlas : fra svenskegrensen til Sognefjorden. Oslo: Nautisk forlag i samarbeid med Statens kartverk, Norges sjøkartverk. 1987: 225, 244. ISBN 8290335024. 
  53. ^ Alexander P. Lisitzin, Sea-Ice and Iceberg Sedimentation in the Ocean: Recent and Past, p. 449.
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Bibliography

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