![Topographic isolation and prominence](https://upload.wikimedia.org/wikipedia/commons/0/08/Topographic_isolation_and_prominence.svg)
In
topography
Topography is the study of the forms and features of land surfaces. The topography of an area may refer to the land forms and features themselves, or a description or depiction in maps.
Topography is a field of geoscience and planetary sc ...
, prominence (also referred to as autonomous height, relative height, and shoulder drop in US English, and drop or relative height in British English) measures the height of a mountain or hill's summit relative to the lowest
contour line
A contour line (also isoline, isopleth, or isarithm) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. It is a plane section of the three-dimensional grap ...
encircling it but containing no higher summit within it. It is a measure of the independence of a
summit. A peak's ''key col'' (the highest
col surrounding the peak) is a unique point on this contour line and the ''parent peak'' is some higher mountain, selected according to various criteria.
Definitions
![prominence_definition](https://upload.wikimedia.org/wikipedia/commons/3/3e/Prominence_definition.svg)
The prominence of a peak may be defined as the least drop in height necessary in order to get from the summit to any higher terrain. This can be calculated for a given peak in the following way: for every path connecting the peak to higher terrain, find the lowest point on the path; the ''key
col'' (or ''key
saddle
The saddle is a supportive structure for a rider of an animal, fastened to an animal's back by a girth. The most common type is equestrian. However, specialized saddles have been created for oxen, camels and other animals. It is not k ...
'', or ''linking col'', or ''link'') is defined as the highest of these points, along all connecting paths; the prominence is the difference between the elevation of the peak and the elevation of its key col.
Mount Everest
Mount Everest (; Tibetic languages, Tibetan: ''Chomolungma'' ; ) is List of highest mountains on Earth, Earth's highest mountain above sea level, located in the Mahalangur Himal sub-range of the Himalayas. The China–Nepal border ru ...
's prominence is defined by convention as its height, making it consistent with prominence of the highest peaks on other landmasses. An alternative equivalent definition is that the prominence is the height of the peak's summit above the lowest
contour line
A contour line (also isoline, isopleth, or isarithm) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. It is a plane section of the three-dimensional grap ...
encircling it, but containing no higher summit within it; see Figure 1.
Illustration
![Topographic prominence](https://upload.wikimedia.org/wikipedia/commons/2/26/Topographic_prominence.png)
The parent peak may be either close or far from the subject peak. The summit of
Mount Everest
Mount Everest (; Tibetic languages, Tibetan: ''Chomolungma'' ; ) is List of highest mountains on Earth, Earth's highest mountain above sea level, located in the Mahalangur Himal sub-range of the Himalayas. The China–Nepal border ru ...
is the parent peak of
Aconcagua
Aconcagua () is a mountain in the Principal Cordillera of the Andes mountain range, in Mendoza Province, Argentina. It is the highest mountain in the Americas, the highest outside Asia, and the highest in the Southern Hemisphere with a summi ...
in Argentina at a distance of 17,755 km (11,032 miles), as well as the parent of the
South Summit of Mount Everest at a distance of 360 m (1200 feet). The key col may also be close to the subject peak or far from it. The key col for Aconcagua, if sea level is disregarded, is the
Bering Strait at a distance of 13,655 km (8,485 miles). The key col for the South Summit of Mount Everest is about 100 m (330 feet) distant.
In mountaineering
Prominence is interesting to many
mountaineers
Mountaineering or alpinism, is a set of outdoor activities that involves ascending tall mountains. Mountaineering-related activities include traditional outdoor climbing, skiing, and traversing via ferratas. Indoor climbing, sport climbin ...
because it is an objective measurement that is strongly correlated with the subjective significance of a summit. Peaks with low prominence are either subsidiary tops of some higher summit or relatively insignificant independent summits. Peaks with high prominence tend to be the highest points around and are likely to have extraordinary views.
Only summits with a sufficient degree of prominence are regarded as independent mountains. For example, the world's second-highest mountain is
K2 (height 8,611 m, prominence 4,017 m). While
Mount Everest
Mount Everest (; Tibetic languages, Tibetan: ''Chomolungma'' ; ) is List of highest mountains on Earth, Earth's highest mountain above sea level, located in the Mahalangur Himal sub-range of the Himalayas. The China–Nepal border ru ...
's South Summit (height 8,749 m, prominence 11 m) is taller than K2, it is not considered an independent mountain because it is a sub-summit of the main summit (which has a height and prominence of 8,848 m).
Many
lists of mountains
Mountains are listed according to various criteria:
* List of mountains by elevation
** List of highest mountains greater than above sea level
** List of highest unclimbed peaks
** List of volcanoes by elevation
* Topographic prominence
** List o ...
take topographic prominence as a criterion for inclusion, or ''cutoff''. John and Anne Nuttall's ''The Mountains of England and Wales'' uses a cutoff of 15 m (about 50 ft), and Alan Dawson's list of
Marilyns uses 150 m (about 500 ft). (Dawson's list and the term "Marilyn" are limited to Britain and Ireland). In the contiguous United States, the famous list of "
fourteeners" (14,000 foot / 4268 m peaks) uses a cutoff of 300 ft / 91 m (with some exceptions). Also in the U.S., 2000 ft (610 m) of prominence has become an informal threshold that signifies that a peak has major stature.
Lists with a high topographic prominence cutoff tend to favor isolated peaks or those that are the highest point of their
massif
In geology, a massif ( or ) is a section of a planet's crust that is demarcated by faults or flexures. In the movement of the crust, a massif tends to retain its internal structure while being displaced as a whole. The term also refers to a ...
; a low value, such as the Nuttalls', results in a list with many summits that may be viewed by some as insignificant.
While the use of prominence as a cutoff to form a list of peaks ranked by elevation is standard and is the most common use of the concept, it is also possible to use prominence as a mountain measure in itself. This generates
lists of peaks ranked by prominence, which are qualitatively different from lists ranked by elevation. Such lists tend to emphasize isolated high peaks, such as range or island high points and
stratovolcanoes. One advantage of a prominence-ranked list is that it needs no cutoff since a peak with high prominence is automatically an independent peak.
Parent peak
It is common to define a peak's ''parent'' as a particular peak in the higher terrain connected to the peak by the key col. If there are many higher peaks there are various ways of defining which one is the parent, not necessarily based on geological or geomorphological factors. The "parent" relationship defines a hierarchy which defines some peaks as subpeaks of others. For example, in Figure 1, the middle peak is a subpeak of the right peak, which is in turn a subpeak of the left peak, which is the highest point on its landmass. In that example, there is no controversy over the hierarchy; in practice, there are different definitions of parent. These different definitions follow.
Encirclement or island parentage
Also called ''prominence island parentage'', this is defined as follows. In figure 2 the key col of peak A is at the meeting place of two closed contours, one encircling A (and no higher peaks) and the other containing at least one higher peak. The encirclement parent of A is the highest peak that is inside this other contour. In terms of the falling-sea model, the two contours together bound an island, with two pieces connected by an isthmus at the key col. The encirclement parent is the highest point on this entire island.
For example, the encirclement parent of
Mont Blanc
Mont Blanc (french: Mont Blanc ; it, Monte Bianco , both meaning "white mountain") is the highest mountain in the Alps and Western Europe, rising above sea level. It is the second-most prominent mountain in Europe, after Mount Elbrus, and ...
, the highest peak in the
Alps
The Alps () ; german: Alpen ; it, Alpi ; rm, Alps ; sl, Alpe . are the highest and most extensive mountain range system that lies entirely in Europe, stretching approximately across seven Alpine countries (from west to east): France, Swi ...
, is
Mount Everest
Mount Everest (; Tibetic languages, Tibetan: ''Chomolungma'' ; ) is List of highest mountains on Earth, Earth's highest mountain above sea level, located in the Mahalangur Himal sub-range of the Himalayas. The China–Nepal border ru ...
. Mont Blanc's key col is a piece of low ground near
Lake Onega
Lake Onega (; also known as Onego, rus, Оне́жское о́зеро, r=Onezhskoe ozero, p=ɐˈnʲɛʂskəɪ ˈozʲɪrə; fi, Ääninen, Äänisjärvi; vep, Änine, Änižjärv) is a lake in northwestern Russia, on the territory of the Repu ...
in northwestern Russia (at elevation), on the
divide between lands draining into the
Baltic
Baltic may refer to:
Peoples and languages
* Baltic languages, a subfamily of Indo-European languages, including Lithuanian, Latvian and extinct Old Prussian
*Balts (or Baltic peoples), ethnic groups speaking the Baltic languages and/or originati ...
and
Caspian Sea
The Caspian Sea is the world's largest inland body of water, often described as the world's largest lake or a full-fledged sea. An endorheic basin, it lies between Europe and Asia; east of the Caucasus, west of the broad steppe of Central Asia ...
s. This is the meeting place of two contours, one of them encircling Mont Blanc; the other contour encircles Mount Everest. This example demonstrates that the encirclement parent can be very far away from the peak in question when the key col is low.
![ProminenceDiagram](https://upload.wikimedia.org/wikipedia/commons/7/77/ProminenceDiagram.svg)
This means that, while simple to define, the encirclement parent often does not satisfy the intuitive requirement that the parent peak should be close to the child peak. For example, one common use of the concept of parent is to make clear the location of a peak. If we say that Peak A has Mont Blanc for a parent, we would expect to find Peak A somewhere close to Mont Blanc. This is not always the case for the various concepts of parent, and is least likely to be the case for encirclement parentage.
Figure 3 shows a schematic range of peaks with the color underlying the minor peaks indicating the encirclement parent. In this case the encirclement parent of M is H whereas an intuitive view might be that L was the parent. Indeed, if col "k" were slightly lower, L would be the true encirclement parent.
The encirclement parent is the highest possible parent for a peak; all other definitions pick out a (possibly different) peak on the combined island, a "closer" peak than the encirclement parent (if there is one), which is still "better" than the peak in question. The differences lie in what criteria are used to define "closer" and "better."
Prominence parentage
The (prominence) parent peak of peak A can be found by dividing the island or region in question into territories, by tracing the two hydrographic runoffs, one in each direction, downwards from the key col of every peak that is more prominent than peak A. The parent is the peak whose territory peak A is in.
For hills with low prominence in Britain, a definition of "parent
Marilyn" is sometimes used to classify low hills ("Marilyn" being a British term for a hill with a prominence of at least 150 m).
This is found by dividing the region of Britain in question into territories, ''one for each Marilyn''. The parent Marilyn is the Marilyn whose territory the hill's summit is in. If the hill is on an island (in Britain) whose highest point is less than 150 m, it has no parent Marilyn.
Prominence parentage is the only definition used in the
British Isles
The British Isles are a group of islands in the North Atlantic Ocean off the north-western coast of continental Europe, consisting of the islands of Great Britain, Ireland, the Isle of Man, the Inner and Outer Hebrides, the Northern Isles, ...
because encirclement parentage breaks down when the key col approaches sea level. Using the encirclement definition, the parent of almost any small hill in a low-lying coastal area would be
Ben Nevis
Ben Nevis ( ; gd, Beinn Nibheis ) is the highest mountain in Scotland, the United Kingdom and the British Isles. The summit is above sea level and is the highest land in any direction for . Ben Nevis stands at the western end of the Grampian ...
, an unhelpful and confusing outcome. Meanwhile, "height" parentage (see below) is not used because there is no obvious choice of cutoff.
This choice of method might at first seem arbitrary, but it provides every hill with a clear and unambiguous parent peak that is taller and more prominent than the hill itself, while also being connected to it (via ridge lines). The parent of a low hill will also usually be nearby; this becomes less likely as the hill's height and prominence increase. Using prominence parentage, one may produce a "hierarchy" of peaks going back to the highest point on the island. One such chain in Britain would read:
Billinge Hill
Billinge Hill, also known as Billinge Lump, is in the Metropolitan Borough of St Helens in North West England. With a maximum elevation of , it is the highest point of Merseyside. It lies in Billinge, within the historic county boundaries of L ...
→
Winter Hill →
Hail Storm Hill
Hail Storm Hill, also known as Cowpe Moss, is the highest point of the Rossendale Valley, England, an area of moorland and hill country situated between the West Pennine Moors and the South Pennines. It is wholly within Lancashire, although the ...
→
Boulsworth Hill
Boulsworth Hill is a large expanse of moorland, the highest point of the South Pennines of south-eastern Lancashire, England, separating the Borough of Pendle from Calderdale.
Its summit, Lad Law, is 1,696 ft (517 m) above sea level, ...
→
Kinder Scout
Kinder Scout is a moorland plateau and national nature reserve in the Dark Peak of the Derbyshire Peak District in England. Part of the moor, at above sea level, is the highest point in the Peak District, in Derbyshire and the East Midlands; ...
→
Cross Fell
Cross Fell is the highest mountain in the Pennines of Northern England and the highest point in England outside the Lake District. It is located in the North Pennines Area of Outstanding Natural Beauty. It lies within the county of Cumbria and ...
→
Helvellyn
Helvellyn (; possible meaning: ''pale yellow moorland'') is a mountain in the English Lake District, the highest point of the Helvellyn range, a north–south line of mountains to the north of Ambleside, between the lakes of Thirlmere and Ul ...
→
Scafell Pike
Scafell Pike () is the highest and the most prominent mountain in England, at an elevation of above sea level. It is located in the Lake District National Park, in Cumbria, and is part of the Southern Fells and the Scafell massif.
Scafell P ...
→
Snowdon →
Ben Nevis
Ben Nevis ( ; gd, Beinn Nibheis ) is the highest mountain in Scotland, the United Kingdom and the British Isles. The summit is above sea level and is the highest land in any direction for . Ben Nevis stands at the western end of the Grampian ...
.
At each stage in the chain, both height and prominence increase.
Line parentage
Line parentage, also called height parentage, is similar to prominence parentage, but it requires a prominence cutoff criterion. The height parent is the closest peak to peak A (along all ridges connected to A) that has a greater height than A, and satisfies some prominence criteria.
The disadvantage of this concept is that it goes against the intuition that a parent peak should always be more significant than its child. However it can be used to build an entire lineage for a peak which contains a great deal of information about the peak's position.
Other criteria
To choose among possible parents, instead of choosing the closest possible parent, it is possible to choose the one which requires the least descent along the ridge.
In general, the analysis of parents and lineages is intimately linked to studying the
topology
In mathematics, topology (from the Greek words , and ) is concerned with the properties of a geometric object that are preserved under continuous deformations, such as stretching, twisting, crumpling, and bending; that is, without closing ...
of
watersheds.
Issues in choice of summit and key col
Alteration of the landscape by humans and presence of water features can give rise to issues in the choice of location and height of a summit or col. In Britain, extensive discussion has given rise to a protocol that has been adopted by the main sources of prominence data in Britain and Ireland.
Other sources of data commonly ignore man-made alterations, but this convention is not universally agreed upon; for example, some authors discount modern structures but allow ancient ones. Another disagreement concerns
mountaintop removal
Mountaintop removal mining (MTR), also known as mountaintop mining (MTM), is a form of surface mining at the summit or summit ridge of a mountain. Coal seams are extracted from a mountain by removing the land, or overburden, above the seams. Thi ...
, though for high-prominence peaks (and for low-prominence subpeaks with intact summits), the difference in prominence values for the two conventions is typically relatively small.
Examples
![World_top_peak_prominence](https://upload.wikimedia.org/wikipedia/commons/3/35/World_top_peak_prominence.svg)
The key col and parent peak are often close to the subpeak but this is not always the case, especially when the key col is relatively low. It is only with the advent of computer programs and geographical databases that thorough analysis has become possible.
The key col of
Denali
Denali (; also known as Mount McKinley, its former official name) is the highest mountain peak in North America, with a summit elevation of above sea level. With a topographic prominence of and a topographic isolation of , Denali is the th ...
in
Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S. ...
(6,194 m) is a 56 m col near
Lake Nicaragua
Lake Nicaragua or Cocibolca or Granada ( es, Lago de Nicaragua, , or ) is a freshwater lake in Nicaragua. Of tectonic origin and with an area of , it is the largest lake in Central America, the 19th largest lake in the world (by area) and the t ...
(unless one accepts the
Panama Canal
The Panama Canal ( es, Canal de Panamá, link=no) is an artificial waterway in Panama that connects the Atlantic Ocean with the Pacific Ocean and divides North and South America. The canal cuts across the Isthmus of Panama and is a condui ...
as a key col; this is a matter of contention). Denali's encirclement parent is
Aconcagua
Aconcagua () is a mountain in the Principal Cordillera of the Andes mountain range, in Mendoza Province, Argentina. It is the highest mountain in the Americas, the highest outside Asia, and the highest in the Southern Hemisphere with a summi ...
(6,960 m), in
Argentina
Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...
, and its prominence is 6,138 m. To further illustrate the rising-sea model of prominence, if sea level rose 56 m, North and South America would be separate continents and Denali would be 6138 m above sea level. At a slightly lower level, the continents would still be connected, and the high point of the combined landmass would be Aconcagua, the encirclement parent. Note that, for the purposes of this article, man made structures such as the
Panama Canal
The Panama Canal ( es, Canal de Panamá, link=no) is an artificial waterway in Panama that connects the Atlantic Ocean with the Pacific Ocean and divides North and South America. The canal cuts across the Isthmus of Panama and is a condui ...
are not taken into account. If they were, the key col would be along the 26 m
Gaillard Cut
The Culebra Cut, formerly called Gaillard Cut, is an artificial valley that cuts through the Continental Divide in Panama. The cut forms part of the Panama Canal, linking Gatun Lake, and thereby the Atlantic Ocean, to the Gulf of Panama and henc ...
and Denali would have a prominence of 6,168 m.
While it is natural for Aconcagua to be the parent of Denali, since Denali is a major peak, consider the following situation: Peak A is a small hill on the coast of Alaska, with elevation 100 m and key col 50 m. Then the encirclement parent of Peak A is also Aconcagua, even though there will be many peaks closer to Peak A which are much higher and more prominent than Peak A (for example, Denali). This illustrates the disadvantage in using the encirclement parent.
Mount Whitney (4421 m) has its key col away in
New Mexico
)
, population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano)
, seat = Santa Fe
, LargestCity = Albuquerque
, LargestMetro = Tiguex
, OfficialLang = None
, Languages = English, Spanish ( New Mexican), Navajo, Ke ...
at 1347 m on the
Continental Divide. Its encirclement parent is
Pico de Orizaba
Pico de Orizaba, also known as Citlaltépetl (from Nahuatl = star, and = mountain), is an inactive stratovolcano, the highest mountain in Mexico and the third highest in North America, after Denali of Alaska in the United States and Mount ...
(5,636 m), the highest mountain in
Mexico
Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...
. Orizaba's key col is back along the Divide, in
British Columbia
British Columbia (commonly abbreviated as BC) is the westernmost province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, ...
.
The key col for
Mount Mitchell
Mount Mitchell, known in Cherokee as Attakulla, is the highest peak of the Appalachian Mountains and the highest peak in mainland eastern North America. It is located near Burnsville in Yancey County, North Carolina in the Black Mountain sub ...
, the highest peak of the
Appalachians
The Appalachian Mountains, often called the Appalachians, (french: Appalaches), are a system of mountains in eastern to northeastern North America. The Appalachians first formed roughly 480 million years ago during the Ordovician Period. They ...
, is in Chicago, the low point on the divide between the
St. Lawrence
Saint Lawrence or Laurence ( la, Laurentius, lit. " laurelled"; 31 December AD 225 – 10 August 258) was one of the seven deacons of the city of Rome under Pope Sixtus II who were martyred in the persecution of the Christians that the Roma ...
and
Mississippi River
The Mississippi River is the second-longest river and chief river of the second-largest drainage system in North America, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it fl ...
watersheds.
A hill in a low-lying area like the
Netherlands
)
, anthem = ( en, "William of Nassau")
, image_map =
, map_caption =
, subdivision_type = Sovereign state
, subdivision_name = Kingdom of the Netherlands
, established_title = Before independence
, established_date = Spanish Netherl ...
will often be a direct child of
Mount Everest
Mount Everest (; Tibetic languages, Tibetan: ''Chomolungma'' ; ) is List of highest mountains on Earth, Earth's highest mountain above sea level, located in the Mahalangur Himal sub-range of the Himalayas. The China–Nepal border ru ...
, with its prominence about the same as its height and its key col placed at or near the foot of the hill, well below, for instance, the 113-meter-high key col of
Mont Blanc
Mont Blanc (french: Mont Blanc ; it, Monte Bianco , both meaning "white mountain") is the highest mountain in the Alps and Western Europe, rising above sea level. It is the second-most prominent mountain in Europe, after Mount Elbrus, and ...
.
Calculations and mathematics
When the key col for a peak is close to the peak itself, prominence is easily computed by hand using a
topographic map
In modern mapping, a topographic map or topographic sheet is a type of map characterized by large- scale detail and quantitative representation of relief features, usually using contour lines (connecting points of equal elevation), but histori ...
. However, when the key col is far away, or when one wants to calculate the prominence of many peaks at once, software can apply
Surface Network Modeling to a
digital elevation model
A digital elevation model (DEM) or digital surface model (DSM) is a 3D computer graphics representation of elevation data to represent terrain or overlaying objects, commonly of a planet, moon, or asteroid. A "global DEM" refers to a discrete g ...
to find exact or approximate key cols.
Since
topographic map
In modern mapping, a topographic map or topographic sheet is a type of map characterized by large- scale detail and quantitative representation of relief features, usually using contour lines (connecting points of equal elevation), but histori ...
s typically show elevation using
contour lines, the exact elevation is typically bounded by an upper and lower contour, and not specified exactly. Prominence calculations may use the high contour, giving in a pessimistic estimate, the low contour, giving an optimistic estimate, their mean, giving a "midrange" or "rise" prominence, or an interpolated value, customary in Britain.
The choice of method depends largely on the preference of the author and historical precedent. Pessimistic prominence, and sometimes optimistic prominence, were for many years used in US and international lists, but mean prominence is becoming preferred.
Wet prominence and dry prominence
There are two varieties of topographic prominence: wet prominence and dry prominence.
[Adam Helman, ''The Finest Peaks–Prominence and Other Mountain Measures'', 2005.] Wet prominence is the standard topographic prominence discussed in this article. Wet prominence assumes that the surface of the earth includes all permanent water, snow, and ice features. Thus, the wet prominence of the highest summit of an ocean island or landmass is always equal to the summit's elevation.
Dry prominence, on the other hand, ignores water, snow, and ice features and assumes that the surface of the earth is defined by the solid bottom of those features. The dry prominence of a summit is equal to its wet prominence unless the summit is the highest point of a landmass or island, or its key col is covered by snow or ice. If its highest surface col is on water, snow, or ice, the dry prominence of that summit is equal to its wet prominence plus the depth of its highest submerged col.
The dry prominence of
Mount Everest
Mount Everest (; Tibetic languages, Tibetan: ''Chomolungma'' ; ) is List of highest mountains on Earth, Earth's highest mountain above sea level, located in the Mahalangur Himal sub-range of the Himalayas. The China–Nepal border ru ...
is, by convention, equal to its wet prominence (8848 m) plus the depth of the deepest hydrologic feature (the
Challenger Deep
The Challenger Deep is the deepest-known point of the seabed of Earth, with a depth of by direct measurement from deep-diving submersibles, remotely operated underwater vehicles and benthic landers, and (sometimes) slightly more by sonar bathym ...
at 10,911 m), or 19,759 m. The dry prominence of
Mauna Kea is equal to its wet prominence (4205 m) plus the depth of its highest submerged col (about 5125 m), or about 9330 m, giving it the world's second greatest dry prominence after Mount Everest.
The dry prominence of
Aconcagua
Aconcagua () is a mountain in the Principal Cordillera of the Andes mountain range, in Mendoza Province, Argentina. It is the highest mountain in the Americas, the highest outside Asia, and the highest in the Southern Hemisphere with a summi ...
is equal to its wet prominence (6962 m) plus the depth of the highest submerged col of the
Bering Strait (about 50 m), or about 7012 m.
Dry prominence is also useful for measuring submerged
seamounts. Seamounts have a dry topographic prominence, a
topographic isolation
The topographic isolation of a summit is the minimum distance to a point of equal elevation, representing a radius of dominance in which the peak is the highest point. It can be calculated for small hills and islands as well as for major mounta ...
, and a negative
topographic elevation
The elevation of a geographic location is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface (see Geodetic datum § Ve ...
.
List of most prominent summits on Earth by 'dry' prominence
See also
*
List of mountain lists
*
List of tallest mountains in the Solar System
*
List of the most prominent summits of the world
**
List of ultra-prominent summits of Africa
**
List of ultra-prominent summits of Antarctica
**
List of ultra-prominent summits of Australia
**
List of ultra-prominent summits of the Alps
**
List of the most prominent summits of the British Isles
**
List of European ultra-prominent peaks
This is a list of all the mountains in Europe with ultra-prominent peaks with topographic prominence greater than . The column "Col" denotes the highest elevation to which one must descend from a peak in order to reach peaks with higher elevations; ...
**
List of ultra-prominent summits of North America
***
List of the most prominent summits of Greenland
***
List of the most prominent summits of Canada
***
List of the most prominent summits of the Rocky Mountains
***
List of the most prominent summits of the United States
The following sortable table comprises the 200 most topographically prominent mountain peaks of the United States of America.
The summit of a mountain or hill may be measured in three principal ways:
#The topographic elevation of a summit me ...
****
List of the most prominent summits of New England
***
List of the most prominent summits of Mexico
***
List of the most prominent summits of Central America
***
List of the most prominent summits of the Caribbean
**
List of ultra-prominent summits of South America
**
List of islands by highest point
This is a list of islands in the world ordered by their highest point; it lists islands with peaks by elevation. At the end of this article continental landmasses are also included for comparison.
Island countries and territories listed are tho ...
*
Height above average terrain
Height above average terrain (HAAT), or (less popularly) effective height above average terrain (EHAAT), is the vertical position of an antenna site is above the surrounding landscape. HAAT is used extensively in FM radio and television, as it i ...
(HAAT) - a similar measurement for
FM and
TV transmitters
*
Summit
*
Topographic elevation
The elevation of a geographic location is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface (see Geodetic datum § Ve ...
*
Topographic isolation
The topographic isolation of a summit is the minimum distance to a point of equal elevation, representing a radius of dominance in which the peak is the highest point. It can be calculated for small hills and islands as well as for major mounta ...
*
Ultra-prominent summit
An ultra-prominent peak, or Ultra for short, is a mountain summit with a topographic prominence of or more; it is also called a P1500.
The prominence of a peak is the minimum height of climb to the summit on any route from a higher peak, or fro ...
Notes
References
External links
Prominence Definitions and data for CanadaK2 prominenceparent peaka website about mountain prominence, with lists and/or maps covering the entire world down to 1500m of prominence (the "ultras").
Europeaklist 'sister' website to the above, devoted only to European mountains and hills.
UK Prominent PeaksUK peaks classified by prominence and height
This page contains links to all relevant on-line prominence resources — including peak lists, climbing records, prominence cell maps, "completion maps", and trip reports. By Adam Helman.
a detailed and lucid account by Aaron Maizlish of the theory of prominence.
http://groups.yahoo.com/group/prominence/Yahoo! Groups, Topographic prominence discussion
Prominence-oriented climbing records. Lists are maintained by Andy Martin and hosted at cohp.org .
Index to definitions in the Canadian Mountain EncyclopediaMountain Hierarchiesa description of the different systems of defining parent peak
Mountain Hierarchy using Prominence Islandson the Center for Advanced Surface Analysis website
* {{small, (2.13
MiB) a paper by Sanjay Rana and Jeremy Morley
The 100 most prominent peaks in ColoradoAlan Dawson's ''The Relative Hills of Britain''
Topography
Physical geography
Mountaineering
Vertical extent