The scripps sea floor map has also been used to discover a. Pacific ocean floor tubed map national geographic maps. Several outstanding topographic features distinguish the atlantic ocean from the pacific and indian oceans. This is a cut and paste parts of the ocean floor worksheet. Multibeam sonar mapping the deepocean floor 78 the noaa ship okeanos explorer education materials collection oceanexplorernoaagov system during the indexsatal 2010 expedition. The map is packaged in a two inch diamater clear plastic tube. Connections between ocean bottom topography and earths climate. The under water topography maps have been developed by the study of ocean floor topography. A topographic profile of the pacific ocean floor between japan and british columbia is shown in figure 18. The data table shows a record of the depth of the atlantic ocean measured by a research vessel travelling on course due east along 39on latitude. Ocean floor topography worksheet answers floor roma.
Pdf a digital bathymetric map of the oceans with a horizontal resolution of 1 to 12 kilometers was derived by combining available depth soundings with. Ocean floor topography earth and space science, seafloor. The summers are short, but with long periods of daylight midnight sun. The arctic represents the northermost area of the world, the arctic ocean and the land areas that surrounds it. Before scientists invented sonar, many people believed the ocean floor was a completely flat surface. Explorations after 1950 revealed the true complex nature of the ocean floor. Learn the ocean floor topography with free interactive flashcards. The abyssal plain is a relatively flat area that covers most of the ocean floor and is the deepest part of the ocean floor. Gloria sidescansonar mosaic of the sea floor off oregon and.
Describe the major features of the ocean floor and explain how the ocean floor is mapped. The ocean floor is flat, except where islands protrude above the surface. Choose from 500 different sets of the ocean floor topography flashcards on quizlet. Here we focus on those processes that produce smaller scale sea floor topography and structure in the oceanic crust. Topographic steering and mixing associated with entrainment are discussed by gille et al. Interpolating a topographical map of the ocean floor. Be sure students understand that each data point represents the depth of water at the location described by the geographic coordinates. This is a great way to get your students out of their chairs and on their feet to learn about the ocean floor. The maps below have been sectioned into 16 clickable regions. Students are to draw the given crosssection of the ocean floor in class and then draw and label it again on large poster paper. Since the development of the theory, geologists have had to reexamine almost every aspect of. Imaging the sea floor usgs publications repository. In this chapter, you will learn how scientists gather data about the depth of the ocean floor and how these data are displayed to indicate the shape of earths ocean basins.
First of all, the atlantic ocean extends both into the arctic and. Detailed depth contours provide the size, shape and distribution of underwater features. Topographic profile through the submerged part of a typical passive. Ocean topography is the study of the ocean floor and the features of which. The ocean floor worksheets unit atlantic ocean floor topography lab 4th edition classical conversation science worksheets with chapter the ocean floor. Ocean surface topography is the height of the ocean surface relative to a level of no motion defined by the geoid, a surface of constant geopotential, and provides information on tides, circulation, and the distribution of heat and mass in the earths global ocean. The lithosphere includes both the crust and the solid part of the. The surface topography of mars was mapped already in 1998 and 1999 by nasas mars orbiter laser altimeter mola.
Seafloor topography and ocean circulation the oceanography. The ocean floor has far more varied topography than the land areas, with higher and longer. This is a california state science standardsbased project dealing with the ocean floor and its topography. Briefly introduce the noaa ship okeanos explorer and the indexsatal 2010 expedition.
This new bathymetry data is based on the data compiled by the scripps institute. In fact, it has been said that we know more about the surface of the moon than about the deeper ocean trenches. Ocean floor features national oceanic and atmospheric. A large, flattopped seamount resulting from erosion of an island volcano when it was above sea level. The map serves as a tool for performing scientific, engineering, marine. Bing maps just got a large update that brings a more detailed map of the ocean floor to microsofts mapping service. Explore the ridges, vents, deep sea life, and terrain of the pacific with this physical map of the ocean floor. The ocean trenches are deep valleys that cut into the ocean floor. The theory has caused a revolution in the way we think about the earth. Interpolating a topographical map of the ocean floor q2 4 q1 4 0 x 4 fig. Suppose you took a trip across the atlantic ocean and were able to check the depth of the water under your boat at regular intervals. Echo sounder seismic reflection profiler sound source and hydrophone mapping ocean depths. The brilliant colors on this map let you easily visualize the sea floorwith the colors corresponding to ocean floor depth measurements. From the late 19th century, when the norwegian explorer fridtjof nansen first discovered an ocean in the central arctic, until the middle of the 20th century, it was believed that the arctic ocean was a single large basin.
The new topographic map is visually quite different from the satellite gravity field. The region is characterized but cold temperatures, and ice and snow. The group with the most points at the end is the winning group. The scripps sea floor map has also been used to discover a new microplate in the indian ocean.
If you are looking for more resources concerning energy, take a look at our big unit bundles. Satellite geodesy, igpp, sio, ucsd global topography. Data collected by satellites and remote sensing instruments were used to created a model at least twice as. Here, we discuss the influence of tidal mixing on ocean. Ocean floor topography and features of the ocean floor. Pdf global sea floor topography from satellite altimetry and. Ncei is the official distribution point for nos bathymetric maps, bathymetricfishing maps, regional maps, geophysical maps, and preliminary maps. Ranging in height and diameter, these hills are much larger than the hills we see on land.
Clicking on a particular region will open a new window showing the zoomed in region in more detail. The lithosphere includes both the crust and the solid part of the a. Mar 11, 2017 topographytopography is the study of earths surface shape and features. Mapping ocean depths matthew maury the father of oceanography constructed the first oceanwide bathymetric map n. The main purpose of measuring ocean surface topography is to understand. The arctic ocean is one basin that is mostly covered by sea ice, and. Arctic, topography and bathymetry topographic map grid. The detailed topography of this sea floor map is the most accurate in printdeveloped by combining all available depth soundings collected from noaa satellite technology and radar altimeters. The winters are long and cold and with periods with no sun polar night. Unfortunately, most of todays topographic databases do not adequately resolve smallscale. Each group will write their answer on the white board and hold it up for the teacher to see. Global sea floor topography from satellite altimetry and ship depth soundings article pdf available in science 2775334. Examine detailed maps of seafloor topography for the appropriate areas of the ocean, naming the specific features that occur at designated locations. Ocean floor topography features flashcards quizlet.
The method smith and sandwell, science 277, 19561962, 1997 is an improvement on one developed earlier for geosat data south of 30 degrees s smith and sandwell, j. The resource links provided below are categorized by. Learning ocean science through ocean exploration section 2. Seafloor topography and ocean circulation article pdf available in oceanography washington d. Includes the mariana trench the deepest place on earth and the aleutian trench, along with hundreds of islands labeled by their sovereignty. Be very careful when interpreting this diagram and others like it, because in order to show the various features clearly the vertical axis is exaggerated, in this case by about 200 times. The atlantic ocean a glance at the distribution of high quality ocean data figure 2. White paper in support of a highresolution, ocean altimeter mission april 5, 2001. Global seafloor topography, wdc gmg, boulder rp1, poster.
The tube has a decorative label showing a thumbnail of the map with dimensions. The depth to the ocean floor and the roughness of the bottom vary throughout the oceans as a result of numerous geologic processes. Arctic ocean arctic ocean topography of the ocean floor. Continental drift, sea floor spreading and plate tectonics plate tectonics is a theory developed in the late 1960s, to explain how the outer layers of the earth move and deform. Ocean surface topography or sea surface topography, also called ocean dynamic topography, are highs and lows on the ocean surface, similar to the hills and valleys of earths land surface depicted on a topographic map. This product is intended to aid fishermen and those needing seafloor features and potential fishing grounds. Recognition of topographic features on the seafloor. Continental drift, sea floor spreading and plate tectonics. We know very little about the deep ocean floor and the life it holds due to the depth and the difficulties this creates for scientists.
University of california pdf describing sea floor spreading and effect of earths magnetic field. Unfortunately, most of todays topographic databases do not adequately resolve smallscale features. Ocean floor topography involves the study of ocean bottom features, including the outer continental shelf, continental slopes and ocean waves desktops. Bathymetric maps depict the topography of the seafloor. The outer rocky layer of the earth includes about a dozen large sections called tectonic plates that are arranged like a spherical jig. Be careful when interpreting this diagram and others like it, because in order to show the various features clearly the vertical axis is exaggerated, in this case by about 200 times. Researchers today published the most detailed map of the ocean floor ever produced. Topographic maps of the sea floor, produced at a 1. Pdf global sea floor topography from satellite altimetry. Topographytopography is the study of earths surface shape and features. Surprisingly fine scale details are evident in observations of near shore depths. Mapping the ocean floor click here for lower level graphing experience.
Ocean floor topography worksheet skill floor interior. Explore the worlds most detailed map of the seafloor. Gebco seabed 2030 roadmap for future ocean floor mapping. While statistics on ocean depth and topography are often quoted, how they. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Since only largescale topo graphic features of the sea floor are expected to steer largescale circulation, topography was smoothed to. Abyssal hillsabyssal hills hills along the ocean floor. Jul 19, 2018 all ocean floor diagram library wiring ocean floor lesson ideas science projects earth ocean floor topography quizlet apa4 the ocean floor science changes in landforms and oceans. Pdf all major oceans and seas vary in their sizes, shape, depth, areal.
Surface area and the seabed area, volume, depth, slope, and. Feb 28, 20 bing maps just got a large update that brings a more detailed map of the ocean floor to microsofts mapping service. The first group to answer correctly receives a point. The depth to the upper surface of an ideal south pacific oceanic lithosphere is calculated by applying a wellknown thermal subsidence equation to a grid of ocean floor ages that is generated. All ocean floor diagram library wiring ocean floor lesson ideas science projects earth ocean floor topography quizlet apa4 the ocean floor science changes in landforms and oceans. Arctic ocean topography of the ocean floor britannica. G4 u8 l2 lesson 2 into the deep national oceanic and.
1425 1145 628 1097 655 34 1290 1093 1128 1346 146 1225 14 955 160 1573 1238 1416 856 864 889 1423 1230 527 611 30 423 1013 340 1390 478 395 634 1197 348